60 results on '"Luigi Fattorini"'
Search Results
2. Nonlinearity of Power Absorption Curve and Hand-Arm System Physiology
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Enrico Marchetti, Luigi Fattorini, Marco Tarabini, Raoul Di Giovanni, Massimo Cavacece, and Angelo Tirabasso
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- 2023
3. Metabolic biomarkers of red beetroot juice Intake at rest and after physical exercise
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Ottavia Giampaoli, Cristian Ieno, Fabio Sciubba, Mariangela Spagnoli, Alfredo Miccheli, Alberta Tomassini, Walter Aureli, and Luigi Fattorini
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food intake biomarkers ,Nutrition and Dietetics ,red beetroot juice ,metabolic profiling ,NMR-based metabolomics ,physical activity ,Food Science - Abstract
Background: Red beetroot is known to be a health-promoting food. However, little attention is placed on intestinal bioactive compound absorption. The aim of the study was to assess the urinary red beetroot juice (RBJ) intake biomarkers and possible differences in RBJ’s micronutrient absorption at rest or after physical exercise. Methods: This is a three-armed, single-blind study, involving seven healthy volunteers which were randomly divided into three groups and alternatively assigned to three experimental sessions: RBJ intake at rest, RBJ intake with physical activity, and placebo intake with physical activity. For each session, urine samples were collected before and 120, 180, and 240 min after the intake of RBJ or placebo. The same sampling times were employed for the experimental session at rest. The RBJ metabolic composition was also characterized to identify the urinary biomarkers derived from the intake. Results: 4-methylpyridine-2-carboxylic acid, dopamine-3-O-sulfate, glutamine, and 3-hydroxyisobutyrate were identified as RBJ intake biomarkers. Physical activity significantly increased only the dopamine-3-O-sulfate excretion 120 min after RBJ intake. Conclusions: Urinary dopamine-3-O-sulfate is related to RBJ dopamine content, while 4-methylpyridine-2-carboxylic acid is a betanin or betalamic acid catabolite. The different excretions of these metabolites following physical activity suggest a possible effect on the RBJ uptake depending on different transport processes through the mucosa, namely diffusion-mediated transport for dopamine and saturable transcellular transport for betalamic acid derivatives. These results open new perspectives in improving the absorption of natural bioactive molecules through physical activity.
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- 2023
4. Plastic changes induced by muscle focal vibration: A possible mechanism for long-term motor improvements
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Guido M. Filippi, Angelo Rodio, Luigi Fattorini, Mario Faralli, Giampietro Ricci, and Vito E. Pettorossi
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motor cortex ,physical exercise ,General Neuroscience ,proprioception ,long-term potentiation ,rehabilitation - Abstract
Repetitive focal vibrations can induce positive and persistent after-effects. There is still no satisfactory interpretation of the underlying mechanisms. A rationale, which can provide consistency among different results, is highly desirable to guide both the use of the application and future research. To date, interpretive models are formulated to justify the results, depending on the specific protocol adopted. Indeed, protocol parameters, such as stimulus intensity and frequency, intervention time and administration period, are variable among different studies. However, in this article, we have identified features of the protocols that may allow us to suggest a possible common mechanism underlying the effectiveness of focal vibration under different physiologic and pathologic conditions. Since repetitive focal muscle vibration induces powerful and prolonged activation of muscle proprioceptors, we hypothesize that this intense activation generates adaptive synaptic changes along sensory and motor circuits. This may lead to long-term synaptic potentiation in the central network, inducing an enhancement of the learning capability. The plastic event could increase proprioceptive discriminative ability and accuracy of the spatial reference frame and, consequently, improve motor planning and execution for different motor functions and in the presence of different motor dysfunctions. The proposed mechanism may explain the surprising and sometimes particularly rapid improvements in motor execution in healthy and diseased individuals, regardless of specific physical training. This hypothetic mechanism may require experimental evidence and could lead to extend and adapt the application of the “learning without training” paradigms to other functional and recovery needs.
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- 2023
5. Hyperbaric Exposure of Scuba Divers Affects the Urinary Excretion of Nucleic Acid Oxidation Products and Hypoxanthine
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Enrico Marchetti, Daniela Pigini, Mariangela Spagnoli, Giovanna Tranfo, Flavia Buonaurio, Fabio Sciubba, Ottavia Giampaoli, Alfredo Miccheli, Alessandro Pinto, Nazzareno De Angelis, and Luigi Fattorini
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Male ,scuba-diving ,oxidative stress ,hyperbaric condition ,metabolomics ,hypoxanthine ,Health, Toxicology and Mutagenesis ,Diving ,Public Health, Environmental and Occupational Health ,Water ,Nucleic Acids ,Humans ,human activities ,Biomarkers - Abstract
In recent studies, oxidative stress after scuba diving has been explored by measuringurinary biomarkers in volunteers under controlled conditions. Dive depth and duration, watertemperature, and workload are all variables that can elicit metabolic responses. A controlled divingexperiment was performed in an indoor pool at 20, 30, and 40 m depths at a water temperature of32 ºC, on three different days. Samples of urine from five male scuba divers were taken before divingand at four time points after diving, and then tested for their concentration of five different oxidativestress biomarkers by means of liquid chromatography tandem mass spectrometry and by 1H nuclearmagnetic resonance metabolomics analysis. The results showed no variation in the five biomarkers after diving, but a decreasing trend was observed over the three days, with no differences among thethree depths. The lack of effect on oxidative stress biomarkers has been attributed to the comfortablewater temperature and to the absence of exercise in the divers during the experiment. Instead, anincrease in hypoxanthine excretion, which can be considered a biomarker sensitive to hyperbaric exposure, was found after diving. Finally, the results suggest a physiological mechanism of metabolicadaptation to a new condition.
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- 2022
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6. Airborne Ultrafine Particle and Acute Physiological Effects during Maximal Aerobic Power Test
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Angelo Rodio, Francesco Misiti, Alessandro Zagaglia, Luca Stabile, Giorgio Buonanno, and Luigi Fattorini
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Mechanical Efficiency ,Particulate matter, Acute exercise, Oxygen consumption, Mechanical Efficiency, oxygen radicals ,oxygen radicals ,Environmental Chemistry ,Oxygen consumption ,Acute exercise ,Particulate matter ,Pollution - Published
- 2022
7. The Nutraceuticals as Modern Key to Achieve Erythrocyte Oxidative Stress Fighting in Osteoarthritis
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Luigi Fattorini, FRANCESCO MISITI, Irene Bigioni, Anna Scotto d'abusco, ALESSIA MARIANO, and Angelo Rodio
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Microbiology (medical) ,nutraceuticals ,osteoarthritis ,Boswellia serrata ,curcuma longa ,harpagophytum procumbens ,erythrocytes ,oxidative stress ,General Medicine ,Molecular Biology ,Microbiology - Abstract
Osteoarthritis (OA), the most common joint disease, shows an increasing prevalence in the aging population in industrialized countries. OA is characterized by low-grade chronic inflammation, which causes degeneration of all joint tissues, such as articular cartilage, subchondral bone, and synovial membrane, leading to pain and loss of functionality. Erythrocytes, the most abundant blood cells, have as their primary function oxygen transport, which induces reactive oxygen species (ROS) production. For this reason, the erythrocytes have several mechanisms to counteract ROS injuries, which cause damage to lipids and proteins of the cell membrane. Oxidative stress and inflammation are highly correlated and are both causes of joint disorders. In the synovial fluid and blood of osteoarthritis patients, erythrocyte antioxidant enzyme expression is decreased. To date, OA is a non-curable disease, treated mainly with non-steroidal anti-inflammatory drugs and corticosteroids for a prolonged period of time, which cause several side effects; thus, the search for natural remedies with anti-inflammatory and antioxidant activities is always ongoing. In this review, we analyze several manuscripts describing the effect of traditional remedies, such as Harpagophytum procumbens, Curcumin longa, and Boswellia serrata extracts, in the treatments of OA for their anti-inflammatory, analgesic, and antioxidant activity. The effects of such remedies have been studied both in in vitro and in vivo models, considering both joint cells and erythrocytes.
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- 2022
8. Hyperbaric exposure and oxidative stress in occupational activities (HEOxS): the study protocol
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Katia, Aquilano, Tiziana Paola Baccolo, Bersani, Alberto Maria, Matteo, Bordi, FLAVIA BUONAURIO, Rita Businaro, Cerocchi, Chiara, Corrado, Costanzo, Nazzareno De Angelis, Ornella De Pità, Maria Concetta D’Ovidio, Luigi Fattorini, Giuseppe, Filomeni, Cristian, Ieno, Lettieri Barbato, Daniele, Maggi, Elisa, Enrico, Marchetti, Maria Rosaria Marchetti, Paola, Melis, Alfredo Miccheli, OTTAVIA GIAMPAOLI, Enrico, Paci, Daniela, Pigini, Alessandro Pinto, Floriana, Sacco, Fabio, Sciubba, Mariangela, Spagnoli, Aurora, Summa, Alberta, Tomassini, Elisa Tosti, M., Giovanna, Tranfo, Riccardo, Turchi, and Giuliana Valente, .
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hyperbaric exposure ,Hyperbaric exposure ,Oxidative Stress ,Diet Habits ,Fitness ,Cytokines ,Metabolomics ,oxidative stress ,cytokines ,metabolomics ,diet habits ,fitness - Abstract
Background: Hyperbaric exposure (HE) is proven to be a stressor to several mechanisms in living cells. Even if after homeostasis restoration, harmful effects are expected, in particular a presence of free radicals. These latter are the stimulus to negative phenomenon as inflammation or cancer. In Italy, with 7500 km of sea shores, a large quantity of workers is exposed to HE during occupational activities. A deep knowledge of HE and bodily effects is not well defined; hence a multidisciplinary assessment of risk is needed. To detect one or more indicators of HE a research group is organised, under the INAIL sponsorship. The research project focused on the oxidative stress (OxS) and this paper details on the possible protocol to estimate, with a large amount of techniques on several human liquids, the relationship between OxS and HE. Specific attention will be paid to identify confounding factors and their influence. Methods: Blood and urine will be sampled. Several lab techniques will be performed on samples, both targeted, to measure the level of well-known biomarkers, and untargeted. Regard the formers: products of oxidation of DNA and RNA in urine; inflammation and temperature cytokines and protein carbonyles in blood. Untargeted evaluation will be performed for a metabolomics analysis in urine. Confounding factors: temperature, body fat, fitness, allergies and dietary habits. These factors will be assessed, directly or indirectly, prior and after HE. The final scope of the project is to determine one or more indicators that relates to HE in hits twofold nature: depth and duration. Conclusion: The relationship between OxS and HE is not deeply investigated and literature proposes diverging results. The project aims to define the time dependence of biomarkers related to OxS, to rise knowledge in risk assessment in workers exposed to HE.
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- 2021
9. Is the Focal Muscle Vibration an Effective Motor Conditioning Intervention? A Systematic Review
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G. M. Filippi, Angelo Rodio, Luigi Fattorini, and Vito Enrico Pettorossi
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medicine.medical_specialty ,Histology ,Settore BIO/09 - FISIOLOGIA ,Physical Therapy, Sports Therapy and Rehabilitation ,Review ,Diseases of the musculoskeletal system ,Stimulus (physiology) ,power ,03 medical and health sciences ,0302 clinical medicine ,Mechanical vibration ,Physical medicine and rehabilitation ,Rheumatology ,muscle vibration ,Intervention (counseling) ,force ,efficiency ,motor adjustments ,Medicine ,Orthopedics and Sports Medicine ,Modalities ,Muscle vibration ,business.industry ,Muscle belly ,030229 sport sciences ,Tendon ,medicine.anatomical_structure ,RC925-935 ,Conditioning ,Anatomy ,business ,030217 neurology & neurosurgery - Abstract
Mechanical vibration, applied to single or few muscles, can be a selective stimulus for muscle spindles, able to modify neuromuscular management, inducing short and long-term effects, are now mainly employed in clinic studies. Several studies reported as treatments with focal vibratory (FVT) can influence neuromuscular parameters also in healthy people. However, the application modalities and the consequent effects are remarkably fragmented. This paper aims to review these studies and to characterize the FVT effectiveness on long-term conditional capacities in relation to FVT characteristics. A systematic search of studies published from 1985 to 2020 in English on healthcare databases was performed. Articles had to meet the following criteria: (1) treatment based on a locally applied vibration on muscle belly or tendon; (2) healthy adults involved; (3) outcomes time analysis enduring for more than 24 h. Twelve studies were found, all of them presented an excellent quality score of ≥75%. All selected papers reported positive changes, comparable with traditional long-lasting training effects. Muscle force and power were the most investigated parameters. The after-effects persisted for up to several months. Among the different FV administration modalities, the most effective seems to show a stimulus frequency of ≈100 Hz, repeated more times within three-five days on a voluntary contracted muscle.
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- 2021
10. Effects of focal vibration on power and work in multiple wingate tests
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Alessandro Zagaglia, G. M. Filippi, Luigi Fattorini, Angelo Rodio, and Aurora Summa
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Motor drive ,Settore BIO/09 - FISIOLOGIA ,Physical Therapy, Sports Therapy and Rehabilitation ,Placebo ,Cycling exercise ,03 medical and health sciences ,0302 clinical medicine ,Physiology (medical) ,cycling exercise ,muscle work ,efficiency ,Medicine ,Orthopedics and Sports Medicine ,lcsh:Sports medicine ,lcsh:QH301-705.5 ,Young male ,Balance (ability) ,Original Paper ,business.industry ,Work (physics) ,Healthy subjects ,030229 sport sciences ,Muscular power ,Muscle work efficiency ,lcsh:Biology (General) ,Sprint ,030220 oncology & carcinogenesis ,Anesthesia ,lcsh:RC1200-1245 ,business ,Cycling exercise, Motor drive, Muscle work, Efficiency ,Anaerobic exercise - Abstract
The aim of the study was to assess the effects of a specific protocol, based on a focal muscle vibration, on mechanical parameters in an exercise composed of five repeated bouts of sprint interval tests (Wingate Anaerobic Tests, 10 seconds duration). Twenty-eight young male healthy subjects were randomized to two groups (VIB and CTRL). Peak power (PP), average peak between bouts (aP) and total exercise work (TW) were measured. In both groups, three different exercise sessions were carried out, interspersed by seven days: T0, T1 and T2. Between the baseline (T0) and T1, in the VIB group the intervention was administered on three successive days on quadriceps muscles, whereas a placebo administration was carried out in the CTRL group at the same time. At T1 (30 minutes after intervention) and T2 (7 days after) CTRL did not show any significant change, whereas VIB showed significant increases in PP (11.4%–9.3%), aP (6.6%–6.9%) and TW (5.7%–7.9%) with respect to T0. The results could be explained by an ameliorative agonist-antagonist balance, and this hypothesis is coherent with the literature. On the basis of the present findings, the investigated intervention might be usefully adopted to increase muscular power and endurance.
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- 2020
11. Targeted and untargeted metabolomics applied to occupational exposure to hyperbaric atmosphere
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Giovanna Tranfo, Luigi Fattorini, Daniela Pigini, Mariangela Spagnoli, Fabio Sciubba, Giorgia Conta, Alfredo Miccheli, Alberta Tomassini, and Enrico Marchetti
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Adult ,Male ,0301 basic medicine ,Automobile Driving ,Antioxidant ,medicine.medical_treatment ,DNA and RNA damage metabolomics ,Urine ,Toxicology ,medicine.disease_cause ,occupational exposure ,hyperbaric atmosphere ,Lipid peroxidation ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,medicine ,Humans ,Food science ,HPLC-MS/MS, NMR ,Weather ,Hypoxanthine ,Reactive nitrogen species ,chemistry.chemical_classification ,Reactive oxygen species ,DNA and RNA damage ,Guanosine ,biology ,General Medicine ,Middle Aged ,metabolomics ,Enzyme assay ,Oxidative Stress ,Atmospheric Pressure ,030104 developmental biology ,chemistry ,8-Hydroxy-2'-Deoxyguanosine ,biology.protein ,Female ,Biomarkers ,030217 neurology & neurosurgery ,Oxidative stress - Abstract
Occupational exposure to hyperbaric atmosphere occurs in workers who carry out their activity in environmentswhere breathing air pressure is at least 10% higher than pressure at sea level, and operations can be divided inDry or Wet activities. The increased air pressure implies the formation of reactive oxygen species (ROS) andreactive nitrogen species (RNS), consumption of antioxidants and reduction of antioxidant enzyme activity,causing lipid peroxidation, DNA and RNA damage. The present study was aimed to establish the relation betweenhyperbaric exposure and metabolic changes due to ROS unbalance, by means of the determination of urinary biomarkers of oxidatively generated damage to DNA and RNA during a controlled diving session. Theinvestigated biomarkers were 8-oxo-7,8-dihydroguanine (8-oxoGua), 8-oxo-7,8-dihydroguanosine (8-oxoGuo),and 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo). The experimental session involved six experienced divers subjected to 3 atmospheres absolute for 30 minutesin two different experiments, in both dry and wet conditions. Urine samples were collected at t = 0 (beforeexposure) and 30 (end of exposure),90, 240, 480 and 720 minutes. The concentration of 8-oxoGua, 8-oxoGuo,and 8-oxodGuo was determined by isotopic dilution high performance liquid chromatography (HPLC-MS/MS). In all subjects there is an increase of the urinary excretion of 8oxo-Guo and 8oxo-dGuo, in both conditions, after1.5 - 4 hours from the start of the experiment, and that the values tend to return to the baseline after 12 hours.Besides that, also the nucleic magnetic resonance (NMR)-based untargeted metabolomics was employed for thesame objective on the same samples, confirming a different metabolic response in the subjects exposed to dry orwet conditions. In particular, the observed hypoxanthine urinary level increases during the underwater hyperbaricexposure, in agreement with the trend observed for 8-oxoGuo and 8-oxodGuo levels. Present resultsconfirmed the relationship between exposure and oxidative stress and depicted a clear temporal trend of theinvestigated biomarkers. Due to the possible negative consequences of oxidative stress on workers, presentresearch shows a new line in term of risk prevention.
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- 2020
12. Muscular Fatigue as an Effect of Muscular Synchronization in Hand-Arm Vibration Exposure
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Enrico Marchetti, Angelo Tirabasso, Raoul Di Giovanni, and Luigi Fattorini
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Chemical Health and Safety ,Public Health, Environmental and Occupational Health ,Public aspects of medicine ,RA1-1270 ,Safety, Risk, Reliability and Quality ,Safety Research - Published
- 2022
13. Acoustic and visual pacesetter influence on the energy expenditure in a cycling exercise
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Luigi Fattorini and Angelo Rodio
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Adult ,Male ,medicine.medical_specialty ,Physical Therapy, Sports Therapy and Rehabilitation ,Submaximal exercise ,Audiology ,050105 experimental psychology ,bicycling ,efficiency ,energy metabolism ,adult ,case-control studies ,exercise test ,humans ,male ,oxygen consumption ,young adult ,acoustic stimulation ,data visualization ,Young Adult ,03 medical and health sciences ,Oxygen Consumption ,0302 clinical medicine ,Rhythm ,medicine ,Humans ,Cycle ergometer ,0501 psychology and cognitive sciences ,Orthopedics and Sports Medicine ,business.industry ,Data Visualization ,05 social sciences ,Caloric theory ,Workload ,030229 sport sciences ,Bicycling ,Acoustic Stimulation ,Energy expenditure ,Case-Control Studies ,Exercise Test ,Energy Metabolism ,Cycling ,Ventilatory threshold ,business - Abstract
Background The aim of this study was to evaluate the effects of acoustic and visual pacesetters on the energy expenditure in a steady state 30-minute long cycling. Methods Eighteen healthy male subjects (age 27.6±4.59 years; height 1.78±0.07 m; body mass 80.1±7.85 kg) performed a 30-minute submaximal exercise at a constant workload on a cycle ergometer. The imposed workload required a metabolic expenditure corresponding to 70% of ventilatory threshold for each subject. Energy expenditure - expressed as a caloric equivalent relative to the total net oxygen consumption during exercise - was evaluated using three conditions: control (CT), no external pacesetter; acoustic (AT), listening to rhythmic acoustic stimuli at 120 beat per minute; and visual (VT), seeing footage consisting of eight different images in a looped sequence at 120 frames per minute. Results All measured parameters qualified the exercise as requiring mainly an aerobic metabolism, showing no pain and no fatigue. AT and VT energy expenditure (5.0±0.44 and 4.9±0.39 MET respectively) were significantly lower compared to CT (5.5±0.49 MET), while no difference between AT and VT were recognized. Conclusions This study confirmed the ergogenic effect of the acoustic pacesetter on a 30-minute steady state rhythmic exercise. Novelty is that the visual pacesetter too was able to increase the mechanical efficiency as the same manner than the acoustic one. The present setting adopting visual pacesetter could be used in special categories, such as the deaf or in innovative technological tools as head-mounted display devices.
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- 2019
14. Application of recursive partitioning method (RPM) to select the multi-frequency bioimpedance analysis (MF-BIA) raw parameters predicting appendicular skeletal muscle mass index (SMI)
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Marco Rizzo, Lucio Gnessi, Luigi Fattorini, Andrea Lenzi, Daniela Pollakova, Lorenzo M. Donini, Alessandro Pinto, and Camillo Cammarota
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Nutrition and Dietetics ,Index (economics) ,Bioimpedance Analysis ,Endocrinology, Diabetes and Metabolism ,Medicine (miscellaneous) ,Recursive partitioning ,Cardiology and Cardiovascular Medicine ,Skeletal muscle mass ,Mathematics ,Biomedical engineering - Published
- 2019
15. 87 Muscular activation in vibration perturbed human walking and modelling
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Floriana Sacco, Luigi Fattorini, Marco Tarabini, Raoul Di Giovanni, Francesco Felici, Ilenia Bazzucchi, Cristian Ieno, Angelo Tirabasso, Alessandro Lunghi, and Enrico Marchetti
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Physics ,medicine.medical_specialty ,medicine.diagnostic_test ,STRIDE ,Electromyography ,Tonic (physiology) ,Vibration ,Preferred walking speed ,Physical medicine and rehabilitation ,Reflex ,medicine ,Treadmill ,Tonic vibration reflex ,human activities - Abstract
Introduction Walking on vibrating floor causes a complex exposure pattern and the superimposition of walk and vibration may induce early muscular fatigue.1 The problem is relevant is many field, as sea platform or railway transports. The present study studies the leg muscular activation and stride phases during walking under vibration to derive a muscle model in these circumstances. Methods Subjects walked on a treadmill positioned on a 6-DOF vibrating table. Vibration was imposed at four frequencies (4, 8, 12, 16 Hz) along vertical and transversal direction. The walking speed was set at 1.25 m/s. Surface electromyography (sEMG) of four muscles was recorded. Stride phases were recorded using accelerometers and stride length was calculated. Acceleration signals were acquired in several body districts (foot, knee and hip). All measurements were related to the walking condition without the vibration. Result Preliminary results showed that vibration does not affect stride length and step phases. The muscular activation patterns exhibit frequency related modification, in terms of sEMG bursts amplitude and timing. There is a linear correlation between 8 Hz frequency and muscular activation. Discussion Transmitted vibration triggers a tonic vibration reflex (TVR) that is related to mechanical frequencies.2 TVR is also related to the motor task because of the mechanical coupling between vibrator and biological apparatus.3 These facts could explain the modifications in leg muscle activation revealed with sEMG. References . Fattorini L, Tirabasso A, Lunghi A, Di Giovanni R, Sacco F, Marchetti E. Muscular forearm activation in hand-grip tasks with superimposition of mechanical vibrations. J Electromyogr Kinesiol2016;26:143–148. . Eklund G, Hagbarth KE. Normal variability of tonic vibration reflexes in man. Exp Neurol1966;16:80–92. . Fattorini L, Tirabasso A, Lunghi A, Di Giovanni R, Sacco F, Marchetti E. Muscular synchronisation and hand-arm fatigue. Int J Ind Ergon2017.
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- 2018
16. Body density estimation from multi-frequency Bioelectrical Impedance Analysis measurements
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Jonathan di Fazio, Lorenzo M. Donini, Aurora Summa, Alessandro Pinto, Stefania Corradi, Luigi Fattorini, Enrico Marchetti, Camillo Cammarota, and Claudia Fantini
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Nutrition and Dietetics ,Materials science ,Endocrinology, Diabetes and Metabolism ,Acoustics ,Medicine (miscellaneous) ,Body density ,Cardiology and Cardiovascular Medicine ,Bioelectrical impedance analysis - Published
- 2019
17. Upper limb aerobic training improves aerobic fitness and all-out performance of America's Cup grinders
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Angelo Rodio, Luigi Fattorini, Paolo Emilio Adami, A. S. Delussu, Marco Bernardi, Loretta Corsi, Filippo M. Quattrini, and Maria Rosaria Squeo
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Adult ,Male ,medicine.medical_specialty ,Working capacity ,Physical Therapy, Sports Therapy and Rehabilitation ,Athletic Performance ,physiology ,testing ,training ,metabolism ,team sport ,Respiratory compensation ,Total/mechanical ,Upper Extremity ,Young Adult ,Oxygen Consumption ,Animal science ,Physiology ,Aerobiosis ,Athletes ,Humans ,Ships ,medicine ,Aerobic exercise ,Orthopedics and Sports Medicine ,business.industry ,General Medicine ,Oxygen uptake ,medicine.anatomical_structure ,Physical therapy ,Upper limb ,Maximal exercise ,Ventilatory threshold ,business - Abstract
This research on "America's Cup" grinders investigated the effects of a specific eight-week long-arm cranking ergometer (ACE) training on upper body (UB) aerobic fitness (ventilatory threshold - Tvent, respiratory compensation point- RCP, -oxygen uptake peak - VO₂peak) and high intensity working capacity. The training consisted of sessions carried out for 20-30 mins, three times per week, at an intensity between the UB-Tvent and UB-RCP, and replaced part of a typical lower limb aerobic training whilst maintaining the usual weekly schedule of callisthenics, resistance training and sailing. Seven sailors, including four grinders and three mastmen (age 30 ± 5.5 years, height 1.9 ± 0.04 m, body mass 102 ± 3.6 kg), were evaluated through both an ACE cardiopulmonary maximal exercise test (CPET) and an ACE all-out up to exhaustion exercise test, before and after the ACE training. UB aerobic fitness improved significantly: UB-VO₂peak increased from 4.29 ± 0.442 to 4.52 ± 0.522 l·min(-1) (6.4 ± 3.66%), VO₂ at UB-Tvent from 2.42 ± 0.282 to 2.97 ± 0.328 l·min(-1) (22.8 ± 5.09%) and VO₂ at UB-RCP from 3.25 ± 0.402 to 3.75 ± 0.352 l·min(-1) (16.1 ± 10.83%). Peak power at the ACE CPET increased from 351 ± 27.5 to 387 ± 33.5 W (10.5 ± 6.93%). The all-out test total mechanical work increased from 28.9 ± 2.35 to 40.1 ± 3.76 kJ (72.1 ± 4.67%). In conclusion, a high intensity aerobic ACE training can be effective in improving grinding performance by increasing UB aerobic fitness and all-out working capacity.
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- 2014
18. Muscular forearm activation in hand-grip tasks with superimposition of mechanical vibrations
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Luigi Fattorini, Enrico Marchetti, Angelo Tirabasso, Floriana Sacco, R. Di Giovanni, and Alessandro Lunghi
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medicine.medical_specialty ,electromyography ,TVR ,muscle ,neuroscience (miscellaneous) ,hand-arm ,proprioceptors ,resonance ,vibration ,adult ,biomechanical phenomena ,female ,forearm ,hand ,hand strength ,humans ,male ,middle aged ,muscle fatigue ,muscle, skeletal ,young adult ,biophysics ,neurology (clinical) ,Electromyography ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,Forearm ,Hand strength ,medicine ,Superimposition ,Muscle, Skeletal ,Proprioception ,medicine.diagnostic_test ,Muscle fatigue ,business.industry ,030229 sport sciences ,Anatomy ,musculoskeletal system ,skeletal ,030210 environmental & occupational health ,body regions ,Vibration ,medicine.anatomical_structure ,Extensor Carpi Radialis Longus ,business - Abstract
The purpose of this paper is to evaluate the muscular activation of the forearm, with or without vibration stimuli at different frequencies while performing a grip tasks of 45s at various level of exerted force. In 16 individuals, 9 females and 7 males, the surface electromyogram (EMG) of extensor carpi radialis longus and the flexor carpi ulnari muscles were assessed. At a short latency from onset EMG, RMS and the level of MU synchronization were assessed to evaluate the muscular adaptations. Whilst a trend of decay of EMG Median frequency (MDFd) was employed as an index of muscular fatigue. Muscular tasks consists of the grip of an instrumented handle at a force level of 20%, 30%, 40%, 60% of the maximum voluntary force. Vibration was supplied by a shaker to the hand in mono-frequential waves at 20, 30, 33 and 40Hz. In relation to EMG, RMS and MU synchronization, the muscular activation does not seem to change with the superimposition of the mechanical vibrations, on the contrary a lower MDFd was observed at 33Hz than in absence of vibration. This suggests an early muscular fatigue induced by vibration due to the fact that 33Hz is a resonance frequency for the hand-arm system.
- Published
- 2016
19. Salivary α-amylase and cortisol after exercise in menopause: influence of long-term HRT
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F. Ferrante, Marco Bernardi, Giuseppina Perrone, Francesca Romana Patacchioli, L. C. Dima-Cozma, Maria Rosaria Squeo, Luigi Fattorini, Roberto Brunelli, Paola Galoppi, Vittorio Pasquali, and Cristina Mihaela Ghiciuc
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medicine.medical_specialty ,adrenergic nervous system ,hypothalamus–pituitary–adrenal axis ,incremental cardiopulmonary exercise test ,menopause ,salivary cortisol ,salivary α-amylase ,Hypothalamo-Hypophyseal System ,genetic structures ,Hydrocortisone ,medicine.medical_treatment ,Physiology ,Pituitary-Adrenal System ,Internal medicine ,Medicine ,Humans ,Prospective Studies ,Prospective cohort study ,Saliva ,Exercise ,Postmenopausal women ,Exercise Tolerance ,business.industry ,Estrogen Replacement Therapy ,Obstetrics and Gynecology ,Adrenergic nervous system ,Hormone replacement therapy (menopause) ,General Medicine ,Middle Aged ,medicine.disease ,Circadian Rhythm ,Menopause ,Endocrinology ,Homogeneous ,Physical Fitness ,Salivary alpha-Amylases ,Exercise Test ,Observational study ,Female ,business ,Salivary α amylase - Abstract
This observational prospective study analyzed the effect of an incremental cardiopulmonary exercise test (CPET) on the secretion of salivary biomarkers of the adrenergic nervous system and hypothalamus-pituitary-adrenal (HPA) axis activity by measuring salivary α-amylase and cortisol diurnal trajectories in the setting of long-term hormone replacement therapy (HRT).Fifteen healthy sedentary postmenopausal women who were current HRT users and 15 women who had never used HRT were consecutively recruited. α-Amylase and cortisol were measured in salivary samples collected on the CPET day and on a rest day. Cardiovascular and respiratory fitness parameters were recorded during the CPET challenge.The participants had very homogeneous somatic characteristics, and they were all in generally good health. The postmenopausal never-HRT users presented an abnormal diurnal pattern of α-amylase at baseline and a flattened response to CPET. In contrast, women on HRT had a physiological α-amylase diurnal pattern and increased salivary α-amylase production during the CPET-induced challenge. The CPET challenge physiologically activated the HPA axis activity, as shown by the increase in the concentration of salivary cortisol during the effort test. HPA axis activity was not affected by long-term HRT. Postmenopausal women using HRT exhibited a cardiorespiratory functional capacity that was significantly (p0.05) higher than that of non-users.Our findings show that healthy postmenopausal women present an asymmetry between adrenergic nervous system and HPA axis activities under both basal and stress conditions. HRT was able to modify the abnormal adrenergic nervous system activity, most likely by reducing the sympathetic hyperactivity that characterizes menopause.
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- 2015
20. Focal muscle vibration as a possible intervention to prevent falls in elderly women: a pragmatic randomized controlled trial
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G. M. Filippi, Luigi Fattorini, Giuseppe La Torre, Francesco Landi, Filippo Camerota, Diego Ricciardi, and Claudia Celletti
- Subjects
Aging ,medicine.medical_specialty ,medicine.medical_treatment ,fall ,Settore BIO/09 - FISIOLOGIA ,Tinetti test ,Placebo ,Risk Assessment ,Vibration ,law.invention ,Quadriceps Muscle ,rehabilitation ,Mechanical vibration ,Randomized controlled trial ,muscle vibration ,law ,Intervention (counseling) ,medicine ,Elderly people ,Humans ,Geriatric Assessment ,Postural Balance ,performance-oriented mobility assessment ,Physical Therapy Modalities ,Aged ,Rehabilitation ,Muscle vibration ,elderly people ,business.industry ,Treatment Outcome ,postural instability ,Physical therapy ,Accidental Falls ,Female ,Geriatrics and Gerontology ,business - Abstract
Different and new approaches have been proposed to prevent the risk of falling of elderly people, particularly women. This study investigates the possibility that a new protocol based on the focal mechanical muscle vibration may reduce the risk of falling of elderly women. A pragmatic randomized controlled triple-blind trial with a 6-month follow-up after intervention randomized 350 women (mean age 73.4 years + 3.11), members of local senior citizen centers in Rome, into two groups: vibrated group (VG) and control group (CG). For VG participants a mechanical vibration (lasting 10 min) was focally applied on voluntary contracted quadriceps muscles, three times a day during three consecutive days. CG subjects received a placebo vibratory stimulation. Subjects were tested immediately before (T0) and 30 (T1) and 180 (T2) days after the intervention with the Performance-Oriented Mobility Assessment (POMA) test. All subjects were asked not to change their lifestyle during the study. CG underwent sham vibratory treatment. While CG did not show any statistically significant change of POMA at T1 and T2, VG revealed significant differences. At T2, ≈47 % of the subjects who completed the study obtained the full score on the POMA test and ≈59 % reached the full POMA score. The new protocol seems to be promising in reducing the risk of falling of elderly subjects.
- Published
- 2015
21. INFLUENCE OF 'ACOUSTIC AND VISUAL PACESETTERS' ON PERFORMANCE
- Author
-
Daniela, Lecce, Cristina, Cortis, Sanuheza Alfaro, S. P., Luigi Fattorini, Pasquali, M., and Rodio, Angelo
- Published
- 2014
22. Neuromuscular influence of the mechanical vibration during hand-grip tasks
- Author
-
Marchetti, Enrico, Tirabasso, A., Sacco, F., Lunghi, A., Di Giovanni, R., Leonardo, Gizzi, and Luigi Fattorini
- Published
- 2014
23. Downhill walking to improve lower limb strength in healthy young adults
- Author
-
Angelo Rodio and Luigi Fattorini
- Subjects
Adult ,medicine.medical_specialty ,Keywords: Sedentary ,eccentric training ,workload ,slope ,optimal speed ,Power walking ,Visual analogue scale ,sedentary ,Physical Exertion ,Pain ,Physical Therapy, Sports Therapy and Rehabilitation ,Walking ,Lower limb ,Young Adult ,Physical medicine and rehabilitation ,Humans ,Medicine ,Orthopedics and Sports Medicine ,Muscle Strength ,Exertion ,Young adult ,Treadmill ,Muscle, Skeletal ,Leg ,business.industry ,General Medicine ,Preferred walking speed ,Exercise Test ,Eccentric training ,Physical therapy ,Female ,business ,human activities - Abstract
Walking is the most natural physical activity to maintain and improve fitness and health. Walking downhill is usefully adopted to plan training programmes to improve the strength, particularly in older adults. The present research was aimed to evaluate the influence of downhill walking on leg strength in young adult. A total of 32 females (age 26 ± 4 years; height 1.64 ± 0.05 m; body mass 57.6 ± 5.6 kg) were divided into four groups and they carried out an exercise intervention consisting of three sessions per week for 6 weeks, each lasting 30 minutes. Groups were defined at several workloads characterised by treadmill inclination (%) and walking speed (m · s(-1)): Level Walking at treadmill inclination 0% and walking speed 1.0; Uphill Walking at +20%, 0.75; Downhill Walking (DW) at -20%, 1.36; and Mixed Walking at +20%, 0.75 and -20%, 1.36 each lasting 15 minutes. Maximum voluntary contraction (MVC) developed by the Quadriceps Femoris and Endurance Time at 60% MVC were evaluated before and after experimental period. At the end of each session, Borg's scale and Visual Analogue Scale (VAS) were adopted in order to evaluate perception of rate exertion and pain. Statistical analysis showed significant only in MVC for DW in both right and left legs. Borg's scale and VAS described light activity free of pain. Present findings showed how an eccentric exercise, short lasting and at a low workload, can be useful in inducing improvements in leg strength.
- Published
- 2014
24. Forestry work in the Italians alps: metabolic demand assessed by heart rate
- Author
-
Angelo Rodio, Luigi Fattorini, Anna Sofia Delussu, Enrico Marchetti, Marco Marchetti, and Alessandro Rosponi
- Subjects
Oxygen uptake ,work classification ,heart rate ,weighted average, working timetable ,lcsh:Public aspects of medicine ,lcsh:R ,DOAJ:Public Health ,lcsh:Medicine ,lcsh:RA1-1270 ,DOAJ:Health Sciences - Abstract
Objective: This research aims to: a) assess the energy expenditure during typical forestry activities; b) assess the actual workload of forestry work; c) define the eventual relationship between oxygen uptake ( ) and heart rate during the studied working phases.Methods: Eleven healthy skilled forestry workers were studied. Using a portable device, oxygen uptake ( ), carbon dioxide output ( ), pulmonary ventilation ( ) and heart rate (HR) were measured. The forestry work was divided into four phases: walking uphill, felling, limbing & chain-sawing and complementary activities. A work time report was kept and in each phase a weighted average (WA) of all parameters was obtained.Results:Walking uphill, felling, limbing & chain-sawing activities did not show significant statistical differences between each other and were classified as heavy activities (mean 2.17 lmin-1,mean HR 157 beatmin-1). The complementary activity was found to be less demanding and statistically differed in respect to the others ( 0.55 l min-1, HR 98 beat min-1). By theWA, the actual workload of forestry work resulted in a moderate to heavyoptimal job ( and HR being 1.51 l min-1 and 133.5 beat min-1 respectively in a typical working day). Furthermore it was possible to set up a relationship between and HR for the forestry work.Conclusions: Forestry activity can be classified as moderate to heavy-optimal. Finally, a good and linear correlation between and HR proved to be an easy tool to evaluate the metabolic demand.
- Published
- 2012
25. Concentric-Eccentric force transients: linear and non linear sEMG analysis
- Author
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Felici, F., Bazzucchi, I., Luigi Fattorini, Ortuso, E., Bavetta, A., and Filligoi, Giancarlo
- Published
- 2010
26. Physiological adaptation in noncompetitive rock climbers: good for aerobic fitness?
- Author
-
Luigi Fattorini, A. Rosponi, Filippo M. Quattrini, Marco Marchetti, and Angelo Rodio
- Subjects
Adult ,Male ,medicine.medical_specialty ,Sports medicine ,Ergometry ,Physical Therapy, Sports Therapy and Rehabilitation ,Animal science ,Oxygen Consumption ,Heart Rate ,Heart rate ,Blood lactate ,Medicine ,Aerobic exercise ,Humans ,Telemetry ,Orthopedics and Sports Medicine ,Lactic Acid ,business.industry ,Cardiorespiratory fitness ,General Medicine ,Adaptation, Physiological ,Physical Fitness ,Climbing ,Physical therapy ,Exercise intensity ,Physical Endurance ,Female ,business ,Ventilatory threshold ,Energy Metabolism ,Pulmonary Ventilation ,human activities ,Sports - Abstract
The present investigation aimed to establish whether noncompetitive rock climbing fulfills sports medicine recommendations for maintaining a good level of aerobic fitness. The physiological profile of 13 rock climbers, 8 men (age, 43 ± 8 years) and 5 women (age, 31 -!- 8 years) was assessed by means of laboratory tests. Maximal aerobic power (Vo2peak) and ventilatory threshold (VT) were assessed using a cycloergometer incremental test. During outdoor rock face climbing, Vo2 and heart rate (HR) were measured with a portable metabolimeter and the relative steady-state values (Vo2 and HR during rock climbing) were computed. Blood lactate was measured during recovery. All data are presented as mean ± SD. Vo2peak was 39.1 ± 4.3 mL?kg-'?min ' in men and 39.7 ± 5 mL kg-' ?min_' in women, while VT was 29.4 ± 3.0 mL?kg-'?min ' in men and 28.8 ± 4.6 mL?kg-'?min in women. The Vol during rock climbing was 28.3 ± 1.5 mL?kg-'?min-1 in men and 27.5 ± 3.7 mL kg 'min' in women. The HR during rock climbing was 144 ± 16 b?min-' in men and 164 ± 13 b?min' in women. The aerobic profile was classified from excellent to superior in accordance with the standards of the American College of Sports Medicine (AGSM). The exercise intensity (Vo2 during rock climbing expressed as a percentage of Vo2peak) was 70 ± 6% in men and 72 ± 8% in women. Moreover, the energy expenditure was 1000-1500 kcal per week. In conclusion, noncompetitive rock climbing has proved to be a typical aerobic activity. The intensity of exercise is comparable to that recommended by the American College of Sports Medicine to maintain good cardiorespiratory fitness.
- Published
- 2008
27. Forestry work in the Italians alps: metabolic demand assessed by heart rate measurements
- Author
-
Rodio, Angelo, Luigi, Fattorini, ANNA SOFIA DELUSSU, Enrico, Marchetti, Marco, Marchetti, and Alessandro, Rosponi
- Subjects
work classification ,weighted average ,Key words: oxygen uptake ,heart rate ,working timetable ,Key words: oxygen uptake, work classification, heart rate, weighted average, working timetable - Published
- 2007
28. Energy metabolism and growth hormone response to exercise
- Author
-
Bernardi, Marco, Luigi Fattorini, Rosponi, A., Lussu, S., Cama, E., Egidi, Federico, Ballesio, M., Faiola, Fabio, Radicioni, Antonio F., Federica Alviti, and Andrea Lenzi
- Published
- 2007
29. Hand-arm resonance frequency and related neuromuscular activation
- Author
-
Luigi Fattorini, Morgia, F., Gimenez, V., Valero, J., Delussu, A. S., Filligoi, Giancarlo, Draicchio, F., and Marchetti, E.
- Published
- 2007
30. Growth Hormone response to exercise: relationship with components of physical fitness and daily energy expenditure
- Author
-
Bernardi, Marco, Radicioni, Antonio F., Luigi Fattorini, Anna Sofia De Iussu, Elisabetta, Bernardi, Marco, Emanuela, Federica Alviti, Alessandro, Rosponi, and Andrea Lenzi
- Published
- 2007
31. Motor performance changes induced by muscle vibration
- Author
-
Gian Battista Azzena, Angelo Rodio, G. M. Filippi, Luigi Fattorini, and Aldo Ferraresi
- Subjects
Adult ,Male ,Nervous system ,medicine.medical_specialty ,Contraction (grammar) ,Sports medicine ,Physiology ,proprioception ,Physical Exertion ,Stimulation ,Isometric exercise ,force development ,Vibration ,Physical medicine and rehabilitation ,muscle vibration ,Physical Stimulation ,Physiology (medical) ,Humans ,Medicine ,Orthopedics and Sports Medicine ,functional stiffness ,mechanical stimulation ,Muscle, Skeletal ,Muscle vibration ,Proprioception ,business.industry ,Public Health, Environmental and Occupational Health ,General Medicine ,Adaptation, Physiological ,fatigue ,medicine.anatomical_structure ,Motor Skills ,Muscle Fatigue ,Physical therapy ,Female ,Leg extension ,business ,Muscle Contraction - Abstract
The possibility that mechanical stimulation of selected muscles can act directly on the nervous system inducing persistent changes of motor performances was explored. On the basis of literature, stimulating parameters were chosen to stimulate the central nervous system and to avoid muscle fibre injuries. A sinusoidal mechanical vibration was applied, for three consecutive days, on the quadriceps muscle in seven subjects that performed a muscular contraction (VC). The same stimulation paradigm was applied on seven subjects in relaxed muscle condition (VR) and seven subjects were not treated at all (NV). Two sessions (PRE and POST) of isometric and isotonic tests were performed separated for 21 days, in all studied groups 7 days before and 15 days after stimulation, whilst an isokinetic test was performed on VC only. In the isometric test, the time of force development showed a significant decrease only in VC (POST vs PRE mean 27.8%, P
- Published
- 2006
32. Differences in the force/endurance relationship between young and older men
- Author
-
Luigi Fattorini, Marco Marchetti, Paola Sbriccoli, Francesco Felici, Ilenia Bazzucchi, A. Rosponi, and V. Castellano
- Subjects
Adult ,Male ,medicine.medical_specialty ,Sports medicine ,Physiology ,specific force ,Elbow ,Statistics as Topic ,Neural Conduction ,Isometric exercise ,Electromyography ,aging ,magnetic resonance imaging ,mri ,muscle fibre conduction velocity ,muscle fibres conduction velocity ,surface electromyography ,surface emg ,Biceps ,Nerve conduction velocity ,Physical medicine and rehabilitation ,Physiology (medical) ,medicine ,Humans ,Orthopedics and Sports Medicine ,Muscle, Skeletal ,Aged ,Specific force ,medicine.diagnostic_test ,Anatomy, Cross-Sectional ,business.industry ,Public Health, Environmental and Occupational Health ,Age Factors ,Magnetic resonance imaging ,General Medicine ,medicine.anatomical_structure ,Physical therapy ,Physical Endurance ,Stress, Mechanical ,business ,Muscle Contraction - Abstract
The aim of the present study was to ascertain if in six young (23–35 years) and in six older (70–72 years) healthy men matched for comparable absolute and specific maximal force of the dominant elbow flexors, differences in isometric endurance, myoelectrical fatigability, and shortening velocity are still recognizable. To assess the specific force, the muscle cross sectional area (CSA) was determined from magnetic resonance imaging (MRI) scans. The performance of the elbow flexors was studied by assessing the isometric endurance times (ET) at different percentages of maximal isometric contraction (MVC), the average muscle fibre conduction velocity of action potentials (CV), and the median frequency (MDF) of the surface electromyogram (sEMG) of the biceps brachii. Finally, the torque-velocity curve was assessed by means of maximal isokinetic contractions at six fixed angular velocities. All data were expressed as the mean (SD). The results showed that: (1) the ET was longer in the older subjects at the highest levels of isometric contraction, independently from the absolute force; (2) the modifications of muscle fibre CV during isometric effort progressed less rapidly in the older than the younger groups, as did those of MDF; and (3) at the same angular velocity, the older subjects exerted less absolute force than the younger subjects. These results suggest an impairment of the neuromuscular system of older men, which is less powerful and less fatigable than that of young men.
- Published
- 2005
33. Fonti di energia metabolica nel rock climbing
- Author
-
Rodio, A., Quattrini, F. M., Luigi Fattorini, Geri, M., Ballesio, M., and Marchetti, Marco
- Published
- 2005
34. Non-linear analysis of the surface electromyographic signal in parkinsonian patients
- Author
-
Felici, F., Filligoi, Giancarlo, Luigi Fattorini, Accornero, N., Rosponi, A., Sbriccoli, P., Traballesi, M., and Marchetti, M.
- Published
- 2004
35. Myoelectric signs of fatigue during constant and rhythmic isometric contractions
- Author
-
Felici, F., Luigi Fattorini, Filligoi, Giancarlo, Sbriccoli, P., Bazzucchi, I., and Rosponi, A.
- Published
- 2003
36. Linear and non-linear EMG analysis Improves knowledge of Neuromuscular Motor Control
- Author
-
Filligoi, Giancarlo, Felici, F., Sbriccoli, P., Luigi Fattorini, Bazzucchi, I., and Rosponi, A.
- Published
- 2003
37. Functionality indexes assessed through a simple model of muscle activation, fatigue and recovery
- Author
-
Deborah Lacitignola and Luigi Fattorini
- Subjects
asymptotic and transient behavior ,fatigue equilibrium ,bifurcation analysis ,sub-maximal fatiguing contractions ,muscle functionality indexes ,Computer science ,Applied Mathematics ,Signal ,Stability (probability) ,Range (mathematics) ,Control theory ,Simple (abstract algebra) ,Modeling and Simulation ,Attractor ,Transient (oscillation) ,Resilience (materials science) ,Contraction (operator theory) ,Fatigue equilibrium ,Simulation - Abstract
A nonlinear dynamical system is proposed as a qualitative mathematical model with the twofold aim to reasonably describe the force behavior in a fatiguing sub-maximal contraction and to be possibly employed in assessing muscular activation indexes. The model's properties are studied in terms of its equilibria and their stability properties and the existence of the fatigue equilibrium is ensured as the only system's attractor in the feasibility range of the parameters. Suitable mathematical indicators — related to the dynamical properties of resilience and reactivity — are introduced to characterize the asymptotic and the transient system's behavior. The practical impact of the analytical results is elucidated and a connection is established between the introduced mathematical indicators and muscle functionality indexes as rate of force development, task failure time and complete restore time. Experimental validation with handgrip force signal at high load and possible practical applications are also presented.
- Published
- 2014
38. Linear and non-linear analysis of surface electromyograms in weightlifters
- Author
-
Luigi Fattorini, Francesco Felici, Giancarlo Filligoi, Paola Sbriccoli, A. Rosponi, and Marco Marchetti
- Subjects
Adult ,Male ,Weight Lifting ,Physiology ,Vastus lateralis muscle ,Electromyography ,Isometric exercise ,Models, Biological ,Median frequency ,Physiology (medical) ,medicine ,Humans ,Orthopedics and Sports Medicine ,Ground reaction force ,Muscle, Skeletal ,Mathematics ,medicine.diagnostic_test ,Public Health, Environmental and Occupational Health ,General Medicine ,Anatomy ,Control subjects ,Nonlinear Dynamics ,Recurrence quantification analysis ,Time course ,Linear Models ,Biomedical engineering - Abstract
The present research was aimed at investigating the peculiarities of surface electromyogram (sEMG) signals in 12 weightlifting athletes (WLA) and 9 control subjects (control group, CG) The sEMG signals were recorded from both vastus lateralis muscles during 20 s isometric contractions made at 30% and 60% of the maximal voluntary contraction (MVC). Ground reaction force (vertical component) was recorded using a force plate. The sEMG was analysed in the frequency domain and the median frequency (MDF) was computed over successive 1 s epochs. A non-linear technique, recurrence quantification analysis was also applied to assess the presence and time course of deterministic structures in sEMG. The percentage of determinism (%DET) was used as a synthetic parameter to quantify the amount of regularly repeating sEMG waves within the signal itself (bursts). In 5 WLA the sEMG displayed a clear burst activity centred at 11 Hz. These bursts were correlated with force output oscillations and were evident both at 30% and 60% MVC. The MDF decay with time was more evident in WLA than in CG subjects. The %DET increased in WLA, this increase being more evident during 60% MVC contractions. Our results seemed to suggest a special disposition among WLA for the development of long-term changes in firing probability during sub-maximal isometric exercise. The MDF and %DET data provided indications of a greater involvement of fast twitch muscle fibres in WLA than in CG.
- Published
- 2001
39. High resolution EEG
- Author
-
Fabio Babiloni, Claudio Babiloni, Carducci, F., Luigi Fattorini, Paolo Onorati, and Urbano, A.
- Published
- 1999
40. Performance of two new high resolution EEG technologies using realisticMR-constructed subject's head models
- Author
-
Claudio Babiloni, Fabio Babiloni, Carducci, F., Luigi Fattorini, Paolo Onorati, Del Gaudio, M., and Urbano, A.
- Published
- 1996
41. Effects of an Upper Body High Intensity Interval Training on Body Composition
- Author
-
Marco Bernardi, Silvia Carucci, Adelaide De Matti, Silvia Migliaccio, Federica Montanile, Luigi Fattorini, and Andrea Lenzi
- Subjects
Animal science ,Upper body ,Physical Therapy, Sports Therapy and Rehabilitation ,Orthopedics and Sports Medicine ,Composition (combinatorics) ,High-intensity interval training ,Mathematics - Published
- 2011
42. Upper Body High Intensity Short Term Interval Training: Effects on Aerobic and Anaerobic Fitness
- Author
-
Luigi Fattorini, Paolo Emilio Adami, Maria Rosaria Squeo, Silvia Carucci, Marco Bernardi, Riccardo Lanzano, and Yagesh Bhambhani
- Subjects
medicine.medical_specialty ,Upper body ,business.industry ,High intensity ,Physical therapy ,medicine ,Aerobic exercise ,Physical Therapy, Sports Therapy and Rehabilitation ,Orthopedics and Sports Medicine ,business ,Anaerobic exercise ,Interval training ,Term (time) - Published
- 2011
43. ARX filtering of single sweep Movement Related Brain Macropotentials in mono- and multi-channel recordings
- Author
-
Capitanio, L., Filligoi, Giancarlo, Fabio Babiloni, Luigi Fattorini, Liberati, D., Urbano, A., and Cerutti, S.
- Published
- 1993
44. Growth Hormone Response to High Intensity Upper Body Exercise
- Author
-
Michela Ballesio, Andrea Lenzi, Federico Egidi, Antonio F. Radicioni, Elisabetta Bernardi, Luigi Fattorini, Marco Bernardi, Fabio Faiola, and Maria Rosaria Squeo
- Subjects
medicine.medical_specialty ,Endocrinology ,Upper body ,business.industry ,Internal medicine ,High intensity ,medicine ,Physical Therapy, Sports Therapy and Rehabilitation ,Orthopedics and Sports Medicine ,Growth hormone ,business - Published
- 2008
45. Linear and non linear analysis of sEMG in weight lifters
- Author
-
Felici, F., Rosponi, A., Sbriccoli, P., Filligoi, Giancarlo, Fantini, N., and Luigi Fattorini
46. ARX filtering of single sweep movement-related brain macropotentials in mono- and multichannel recordings
- Author
-
Capitanio, L., Filligoi, G. C., Liberati, D., Cerutti, S., Fabio Babiloni, Luigi Fattorini, and Urbano, A.
47. Motor control during ramp and steady-state muscular efforts investigated by means of sEMG
- Author
-
Filligoi, Giancarlo, Felici, F., Bazzucchi, I., Sbriccoli, P., and Luigi Fattorini
48. DIFFERENCE BETWEEN MEN AND WOMEN IN HAND-TRANSMITTED VIBRATION POWER ABSORPTION
- Author
-
Marchetti, E., Morgia, F., Luigi Fattorini, and Filligoi, Giancarlo
49. Energy demand of running on football field in synthetic or natural grass
- Author
-
Rodio, A., Luigi Fattorini, Scarcia, M., Stropiccioli, A., and Ballesio, M.
50. Nonlinear surface EMG analysis to detect changes of motor unit conduction velocity and synchronization
- Author
-
Giancarlo Filligoi, Francesco Felici, Dario Farina, and Luigi Fattorini
- Subjects
Adult ,Male ,Time Factors ,Physiology ,Acoustics ,Neural Conduction ,Electromyography ,Signal ,Synchronization ,Nerve conduction velocity ,Physiology (medical) ,medicine ,Humans ,Computer Simulation ,Muscle, Skeletal ,Physics ,Motor Neurons ,medicine.diagnostic_test ,Anatomy ,Motor unit ,Electrophysiology ,Nonlinear system ,Amplitude ,Nonlinear Dynamics ,Muscle Fatigue - Abstract
Amplitude and frequency content of the surface electromyographic (EMG) signal reflect central and peripheral modifications of the neuromuscular system. Classic surface EMG spectral variables applied to assess muscle functions are the centroid and median power spectral frequencies. More recently, nonlinear tools have been introduced to analyze the surface EMG; among them, the recurrence quantification analysis (RQA) was shown to be particularly promising for the detection of muscle status changes. The purpose of this work was to analyze the effect of motor unit short-term synchronization and conduction velocity (CV) on EMG spectral variables and two variables extracted by RQA, the percentage of recurrence (%Rec) and determinism (%Det). The study was performed on the basis of a simulation model, which allowed changing the degree of synchronization and mean CV of a number of motor units, and of an experimental investigation of the surface EMG signal properties detected during high-force-level isometric fatiguing contractions of the biceps brachii muscle. Simulations and experimental results were largely in agreement and show that 1) spectral variables, %Rec, and %Det are influenced by CV and degree of synchronization; 2) spectral variables are highly correlated with %Det ( R = −0.95 in the simulations and −0.78 and −0.75 for the initial values and normalized slopes, respectively, in the experimental signals), and thus the information they provide on muscle properties is basically the same; and 3) variations of %Det and %Rec in response to changes in muscle properties are significantly larger than the variations of spectral variables. This study validates RQA as a means for fatigue assessment with potential advantages (such as the higher sensitivity to changes of muscle status) with respect to the classic spectral analysis.
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