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Introduction. People with Parkinson’s disease (PwPD) present motor alterations which can impact daily life tasks that require speed and/or accuracy of movement. Objective. A sub analysis of NCT01439022, aiming to estimate the extent to which two different exercise training protocols (global and handwriting upper limb exercise training) impact reaction time, travel speed, and accuracy in PwPD. Methods. Seventy PwPD, right-side dominant were randomised 1:1 into two six-month training protocol groups; 35 PwPD performed global exercise training and 35 performed specific training (handwriting upper limb exercise movements). Assessments of speed-accuracy and trade-off were carried out at baseline, after 3 and 6 months of training, and at a 12-month follow-up. The current study used data from a previous publication of a randomised controlled trial that included a 6-month self-managed community exercise programme for PwPD. For the present study we included only the participants who completed the Fitts’ task during the baseline assessment. Results. In the upper limb assessments, no main effects were found for the number of touches, but the exercise group showed a marginal increase over time on the left side. Error averages on the left side decreased significantly for the exercise group from baseline to 6 and 12 months. The exercise group also presented a lower Error CoV and the Reaction Time CoV increased on the right side. Significant findings for Fitts r on the left side indicated lower values for the exercise group, with improvements continuing at 12 months. Conclusion. We report the potential of global exercise interventions to facilitate improvements in reaction time and travel speed, as well as other motor control metrics, with lasting effects at 12 months, particularly on the non-dominant side.

Objectives. To assess the feasibility of methods and estimate the potential effect of interrupting sedentary behaviour, with intermittent or continuous physical activity breaks, on cognitive performance in young people with Cerebral Palsy. Methods. A randomised three-arm exposure response cross-over design with process evaluation. Participants were recruited throughout the Thames Valley, UK between 01/11/2018 to 31/03/2020. The three 2 h activity exposure visits included: (i) sitting only (controls), (ii) sitting plus 20 min of moderate-to-vigorous activity burst, or (iii) 4×5 min of moderate-to-vigorous activity bursts, during a 2.5 h sedentary session. Measures of feasibility were sought. Cognitive performance outcomes (using the Eriksen Flanker task and Forward and Backward Digit Span) were delivered before and after the 2 h testing period. Results. 36 participants were randomised (age 13.2±2.7, Gross-Motor Functional Classification System 1–3). Study retention was 83 % across all three interventions and overall missing data for measures was 4 %. A small intervention effect was found in reaction time in the 4×5 min physical activity exposure session compared to the sedentary control condition (0.42; 95 % CI 0.40 to 0.79). There were two research-related minor adverse effects, an allergic reaction to the FreeStyle Libre and feeling faint and vomiting after consumption of glucose solution. Both events were resolved and participants continued with the study. Conclusions. The study design and intervention implementing short bursts of physical activity was feasible and indicated a potential effect on reaction time as a measure of cognitive performance in young people with cerebral palsy.

Developmental coordination disorder (DCD) is characterized by motor learning deficits that are poorly understood within whole-body activities context. Here we present results of one of the largest nonrandomized interventional trials combining brain imaging and motion capture techniques to examine motor skill acquisition and its underpinning mechanisms in adolescents with and without DCD. A total of 86 adolescents with low fitness levels (including 48 with DCD) were trained on a novel stepping task for a duration of 7 weeks. Motor performance during the stepping task was assessed under single and dual-task conditions. Concurrent cortical activation in the prefrontal cortex (PFC) was measured using functional near-infrared spectroscopy (fNIRS). Additionally, structural and functional magnetic resonance imaging (MRI) was conducted during a similar stepping task at the beginning of the trial. The results indicate that adolescents with DCD performed similarly to their peers with lower levels of fitness in the novel stepping task and demonstrated the ability to learn and improve motor performance. Both groups showed significant improvements in both tasks and under single- and dual-task conditions at post-intervention and follow-up compared to baseline. While both groups initially made more errors in the Stroop task under dual-task conditions, at follow-up, a significant difference between single- and dual-task conditions was observed only in the DCD group. Notably, differences in prefrontal activation patterns between the groups emerged at different time points and task conditions. Adolescents with DCD exhibited distinct prefrontal activation responses during the learning and performance of a motor task, particularly when complexity was increased by concurrent cognitive tasks. Furthermore, a relationship was observed between MRI brain structure and function measures and initial performance in the novel stepping task. Overall, these findings suggest that strategies that ad

Purpose: This study set out to identify the extent of the relationships between subsections of the Movement Assessment Battery for Children 2nd Edition - MABC2 (manual dexterity, aiming and catching, and balance) to PA, CRF and BMI in adolescents. Methods: Height, BMI, the MABC2, a 20m shuttle run test and wrist-worn accelerometery PA levels (mins) were measured. Multivariable linear regression models, adjusting for sex, height and BMI were used to assess the relationship of the three subsections of the MABC2 with PA, CRF and BMI. Results: A total of 155 adolescents, aged 13-14 years, took part in this study (77 girls, 78 boys). Balance reported significant relationships with moderate to vigorous PA (unstandardised Beta B=0.15, 95%CI 0.02-0.28), vigorous PA (B=0.06, 95%CI 0.02-0.09) and BMI (B=-0.01, 95%CI -0.02-0.005). Balance in addition to aiming and catching skills were both significantly related to adolescent CRF (B=0.30, 95%CI 0.17-0.42 and B=0.29, 95%CI 0.14-0.45, respectively). Conclusion: This study suggests that balance is the strongest correlate skill to achieving the highest intensities of PA and healthier BMI status in adolescents.

Objectives. The objective was to determine recent cross-sectional trends in health-related fitness (HRF) in secondary school students by studying the 13–14 years old age group repeatedly over 6 years, considering parallel national trends in physical education (PE). Methods. Height, weight, broad jump, grip strength, 20 m shuttle run and throwing and catching skills were measured by the same research team using standardised techniques from 2014 to 2019. Trends in these HRF measures were assessed by linear regression, adjusting for school, sex and height. Interactions with fitness and body mass index (BMI) were tested. The number of PE lessons reported in the UK Annual School Workforce Census between 2010 and 2019 for all state-funded secondary schools was analysed. Results. Grip strength (B=−0.60, 95% CI −0.78 to –0.41), broad jump (B=−1.16, 95% CI −1.99 to –0.34), 20 m shuttle run (B=−1.85, 95% CI −2.58 to –1.12) and throwing and catching skills (B=−0.12, 95% CI −0.15 to –0.08) declined significantly over the study period. There was a greater reduction in broad jump and grip strength in adolescents with low fitness and a greater reduction in fitness and motor competence in adolescents with normal BMI. These declines coincided with a 16% reduction nationally in secondary school PE between 2010 (333 800 hours) and 2019 (280 725 hours). Conclusion. Adolescent HRF has declined in recent years, in parallel with PE lessons. Declines were observed across all young people and particularly those of low fitness and normal BMI. To reach the majority of young people, policy makers could increase PE in schools to increase activity and prevent worsening fitness and health in future generations.

Flavonoids, plant compounds found in certain foods, may have the ability to improve fatigue and fatigability. However, to date, no well-designed intervention studies assessing the role of flavonoid consumption for fatigue management in people with Parkinson's (pwP) have been performed. Objectives. To determine the feasibility and estimate potential effect of flavonoid-rich cocoa on fatigue and fatigability in pwP. Methods. This was a randomised (1:1) double-blind placebo controlled feasibility study in which 30 pwP were recruited from the European Parkinson Therapy Centre, Italy (trial registration: NCT03288155). During a six day intervention participants consumed a high (10.79 mg/g) or low flavonoid cocoa (1.02 mg/g) beverage (18 g Cocoa with 200 ml Rice milk) once daily. Potential effect on fatigue and fatigability was measured (baseline to day 6). Feasibility and fidelity were assessed through recruitment and retention, adherence and a process evaluation. Results. From July 2017 to May 2018, 30 pwP were recruited and randomised and allocated to high (n = 15) or low (n = 15) flavonoid groups and included in analysis. Missing data was less than 5% and adherence to intervention of all allocated individuals was 97%. There was a small effect on fatigability (6 min walk test: ES 0.11 (95%CI = −0.11-0.26); Z = 0.81). There were two adverse events (one in the control and one in the intervention group). Conclusion. The consumption of cocoa is feasible and well received in pwP, and further investigation on the effect on fatigability is warranted.

Rationale: The proportion of adults aged above 60 is rapidly increasing and by 2050 they will comprise almost one fourth of total world population. However, with moderate disability rates also increasing, there is great need for older people to maintain overall well-functioning. Physical and cognitive functioning play a major role in daily activities and determine life quality of older people. Maintaining walking ability is crucial for independent living and walking speed is predictive of overall health, survival and better physical and cognitive functioning. Rates of functional decline vary interindividual and between sexes, with women living longer but with higher comorbidity rates than men. Part of this variability in functional trajectories is attributable to modifiable lifestyle factors, with diet being of great interest. Specific nutrients and presumably healthy diets have been associated with better physical and cognitive performance in older people. Research gap: Evidence for diet quality in line with current dietary guidelines and objective measures of well-functioning, important for older people, is limited. In addition, considering well-known differences in eating and ageing trajectories between men and women, it is highly underexplored whether the effect of diet on overall functioning of older people is sex-specific. Finally, evidence for whether accumulation of healthy dietary exposure over time may exert additional benefits on overall functioning in later life, is scarce. Aim: To investigate the overall and sex-specific prospective associations between diet quality in late midlife and over a 27-year period in adulthood and objective measures of walking speed in older life, indicating survival and physical and cognitive functioning. Methods: This thesis used dietary data (five-day food diaries) of men and women from four time points of the 1946 MRC National Survey of Health and Development birth cohort (N=5,362) when participants were at ages 36, 43, 53