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ObjectiveThe purpose of this study was to investigate the intra-rater reliability and validity of a designed load cell setup for the measurement of back extensor muscle force and endurance.ParticipantsThe study sample included 19 older women with hyperkyphosis, mean age 67.0 ± 5.0 years, and 14 older women without hyperkyphosis, mean age 63.0 ± 6.0 years.MethodsMaximum back extensor force and endurance were measured in a sitting position with a designed load cell setup. Tests were performed by the same examiner on two separate days within a 72-hour interval. The intra-rater reliability of the measurements was analyzed using intraclass correlation coefficient (ICC), standard errors of measurement (SEM), and minimal detectable change (MDC). The validity of the setup was determined using Pearson correlation analysis and independent t-test.ResultsUsing our designed load cell, the values of ICC indicated very high reliability of force measurement (hyperkyphosis group: 0.96, normal group: 0.97) and high reliability of endurance measurement (hyperkyphosis group: 0.82, normal group: 0.89). For all tests, the values of SEM and MDC were low in both groups. A significant correlation between two documented forces (load cell force and target force) and significant differences in the muscle force and endurance among the two groups were found.ConclusionThe measurements of static back muscle force and endurance are reliable and valid with our designed setup in older women with and without hyperkyphosis.

Background and Aim: The Acceptable Noise Level (ANL), which is an effective clinical tool for quantitative assessment of noise tolerance, is affected by some known variables related to both subject and testing materials. The present study examined how the characteristics of different babble noises may affect the ANL results in normal adult listeners. Methods: Forty Persian listeners with normal hearing participated. In addition to typical ANL testing with 12-talker noise, the ANL was obtained in 8 different conditions varying in number of talkers from 2 to 10 in the babble noises presenting forward and backward. Results: There was a significantly lower ANL for 2-talker babble compared to 4, 8, 10, and 12-talker babble in both forward and backward noise conditions. With the increase in talkers in noise, the ANL becomes worse but reaches almost a plateau with more than 4 talkers in babble noise. There was a statistically significant difference between 2-talker forward and 2-talker backward noises, with no difference for the other conditions. Conclusion: This finding that the ANL is affected by the number of talkers in babble noise and by the forward and backward background noise suggests that informational masking and listening in dip mechanisms are involved in ANL for normal hearing people at least. [ABSTRACT FROM AUTHOR]

OBJECTIVE:The purpose of this study was to investigate the intrarater reliability of a skin-surface instrument (Spinal Mouse, Idiag, Voletswil, Switzerland) in measuring standing sagittal curvature and global mobility of the spine in older women with and without hyperkyphosis. METHODS:Measurements were made in 19 women with hyperkyphosis (thoracic kyphosis angle ≥50°), mean age 67 ± 5 years, and 14 women without hyperkyphosis (thoracic kyphosis angle

Introduction: Stroke is one of the most debilitating diseases among adults worldwide and leads to persistent rehabilitation needs even at the chronic stage. Achieving good postural control is a critical requirement for daily activities which enhances quality of life (QoL) in patients with stroke. There is increasing evidence that transcranial direct current stimulation (tDCS) can be considered a promising adjunct technique to improve motor recovery after stroke. Evidence of augmented neuroplasticity after tDCS suggests that paired rehabilitation followed by consecutive use of tDCS may optimize recovery outcomes. Although a few randomized controlled trials have been conducted on upper limb rehabilitation in chronic stroke using tDCS, no study focused on balance training in chronic stroke patients. The present randomized, sham-controlled, double-blinded clinical study addresses brain stimulation targeting postural control using tDCS in chronic stroke. Methods: The study participants included chronic ischemic stroke individuals with postural control impairments who passed the exclusion criteria. Active or sham anodal tDCS was delivered to the lesioned leg motor cortex combined with balance training. The experimental group received active anodal tDCS stimulation (2 mA) for 20 min, daily for 5 days paired with balance training. Linear and nonlinear approaches were used to analyze postural sway changes pre-and post-intervention. Postural sway fluctuation, functional balance assessment using the Berg balance scale, and timed up-and-go test were conducted to compare the active and sham groups. Conclusion: This trial could have significant implications for balance rehabilitation after stroke in the ambulatory setting. If effective, this novel approach may improve rehabilitation protocol in this population. [ABSTRACT FROM AUTHOR]

Background: To our knowledge, there is scant research on the use of rehabilitative ultrasound imaging (RUSI) method for evaluating bladder base displacement in pregnant women. The RUSI is a non-invasive and simple method that assesses the function of pelvic floor muscles (PFM) based on the movement of the bladder base. Objectives: This study aims to assess the reliability of the RUSI for the assessment of PFM function in pregnant women during voluntary muscle contractions. Materials & Methods: In this cross-sectional study, 18 pregnant women with different gestational ages participated. The amount of bladder base displacement during PFM contraction was assessed in all women and considered an indicator of PFM function. The test re-test reliability was evaluated using the intraclass correlation coefficient (ICC) and Bland-Altman plot. The percentages of standard error of measurement (SEM%) and minimal detectable change (MDC%) were also calculated. Results: The mean amount of bladder base displacement during PFM contraction at time points 1 and 2 was 4.89±1.43 and 4.81±1.41, respectively. The ICC was 0.989 (95% CI, 0.969%, 0.996%), which indicates excellent reliability. The Bland-Altman plot showed that all the points were within the 95% limits of agreement with no considerable trend or bias. The SEM% and MDC% were 3.09% and 8.41%, respectively. Conclusion: The intra-rater reliability of the RUSI to assess PFM function in pregnant women is high, and can be useful for further studies on the PFMs in pregnant women. [ABSTRACT FROM AUTHOR]

Background: Pregnant women have poor knowledge of oral hygiene during pregnancy. One problem with the follow-up of dental caries in this group is zero accumulation in the decayed, missing, and filled teeth (DMFT) index, for which some models must be used to achieve valid results. The studied population may be heterogeneous in longitudinal studies, leading to biased estimates. We aimed to assess the impact of oral health education on dental caries in pregnant women using a suitable model in a longitudinal experimental study with heterogeneous random effects. Materials and Methods: This longitudinal, experimental research was carried out on pregnant women who visited medical centers in Tehran. The educational group (236 cases) received education for three sessions. The control group (200 cases) received only standard training. The DMFT index assessed oral and dental health at baseline, 6 months, and 24 months after delivery. The Chi-square test was used for comparing nominal variables and the Mann-Whitney U test for ordinal variables. The zero-inflated Poisson (ZIP) model was applied under heterogeneous and homogeneous random effects using R 4.2.1, SPSS 26, and SAS 9.4. The level of significance was set at 0.05. Results: Data from 436 women aged 15 years and older were analyzed. Zero accumulation in the DMFT was mainly related to the filled teeth (51%). The heterogeneous ZIP model fitted better to the data. On average, the intervention group exhibited a higher rate of change in filled teeth over time than the control group (P = 0.021). Conclusion: The proposed ZIP model is a suitable model for predicting filled teeth in pregnant women. An educational intervention during pregnancy can improve oral health in the long-term follow-up. [ABSTRACT FROM AUTHOR]

Background and Aim: Experiencing dizziness/vertigo is often an indication of dysfunction in the vestibular system. Recent findings show a connection between peripheral vestibular dysfunction and cognitive impairments. The Neuropsychological Vertigo Inventory (NVI) can assess physical, emotional, and cognitive issues in individuals with dizziness/vertigo. The aim of this research was to translate, cultural adaptation and evaluation of the reliability and validity of NVI to Persian. Methods: In this descriptive-analytical study, the NVI scale was translated and adapted to the Iranian cultural context following the international quality of life assessment protocol for translation and equivalence. After obtaining face validity, the scale was administered to 140 patients with peripheral vestibular system dysfunction and 70 control group (age between 25 and 80 years). After one week, 50 participants were asked to complete the questionnaire again. Eventually, reliability was evaluated with both methods of internal consistency and test-retest reproducibility. Results: Out of the 28 items in the NVI scale, 3 items were modified to better align with the cultural conditions of Iranians. The impact scores for most items in this scale were found to be higher than 1.5. The Cronbach's alpha coefficient values for the overall scale (0.90) and test-retest reliability with intra-class correlation coefficient for the overall scale (0.91) were confirmed. Conclusion: The Persian version of NVI scale demonstrates excellent validity and reliability, and it exhibits a high level of content alignment with the original version. Therefore, it can be a useful tool to better understand the physical, emotional and cognitive disturbances in patients with vertigo/dizziness. [ABSTRACT FROM AUTHOR]

Background Primary palmar hyperhidrosis causes a lot of problems for patients and negatively affects their quality of life. Currently, iontophoresis with tap water and aluminum chloride hexahydrate is used for primary palmar hyperhidrosis. Yet, little evidence exists about iontophoresis with aluminum chloride hexahydrate in the form of gel. This study investigated the effect of aluminum chloride hexahydrate gel iontophoresis compared to tap water iontophoresis on primary palmar hyperhidrosis. Methods In this randomised controlled trial study, 32 patients with primary palmar hyperhidrosis were divided randomly into two groups (n = 16). Participants received 7 sessions of iontophoresis with aluminum chloride hexahydrate gel or tap water every other day on the dominant hand. The sweating rate was measured by gravimetry and iodine–starch tests before and after the last treatment session. Results Following the iontophoresis, the rate of sweating in both hands in the two groups was significantly reduced (P < 0.001). However, the sweating rate in the treated hand and the non-treated hand showed no significant difference. There was no significant difference observed in sweating rate reduction between both groups over time, but the larger effect size values observed in the aluminum chloride hexahydrate gel iontophoresis group may suggest the superiority of this gel over tap water in reducing the rate of sweating. Limitations Further investigations with longer follow-up are needed to confirm the hypothesis regarding the effectiveness of aluminum chloride hexahydrate gel iontophoresis over other types of iontophoresis. In addition, contraindications of iontophoresis such as pregnancy, pacemakers, and epilepsy should be considered. Conclusion The present study provides preliminary evidence suggesting that aluminum chloride hexahydrate gel iontophoresis is an effective alternative treatment to decrease sweating rate in extended areas with fewer side effects in patients with primary palmar hyperhidrosis. [ABSTRACT FROM AUTHOR]

Objective Patients with knee osteoarthritis (KO) commonly show quadriceps muscle weakness. One of the important reasons for this weakness is arthrogenic muscle inhibition (AMI), a process in which neural inhibition causes the failure of quadriceps activation. The present study aims to evaluate the effect of cross-education on the AMI and the maximum extensor force of quadriceps in women with unilateral KO. Materials & Methods In this study, 21 women with unilateral KO (grade 2) participated. The AMI and the maximum extensor force of the quadriceps in the affected knee were measured before, immediately after, and 15 minutes after cross-education. The cross-education included isometric training of the contralateral quadriceps in 5 sets of 8 repetitions in one session. For measuring the AMI and maximum extensor force of the quadriceps, a burst of electrical stimulation was superimposed on the maximal voluntary contractions in 6 seconds. Results Immediately after one session of cross-education, the AMI of the affected knee significantly decreased and the maximum extensor force of quadriceps significantly increased compared to the pretest phase (P=0.001). Fifteen minutes after cross-education, AMI significantly increased compared to the post-test phase (P=0.018), but was still lower than that in the pre-test phase (P=0.001) Conclusion One session of cross-education can reduce AMI and increase maximum extensor force of quadriceps in women with KO, and this effect remains for at least 15 minutes. [ABSTRACT FROM AUTHOR]

Background and Aims Diabetes mellitus is one of the most prevalent metabolic conditions in the world. One of its consequences is overactive bladder (OAB), which is a syndrome whose symptoms appear during the urine storage phase in the form of increased urinary frequency or urinary urgency. The prevalence of this disorder is estimated to be 22.5-24.2 % in people with type 2 diabetes (T2D). Recently, a useful technique for the treatment of OAB, named transcutaneous tibial nerve stimulation (TTNS), has been introduced. This study aims to investigate the effect of TTNS in women with T2D and OAB. Methods This randomized, double-blind clinical trial was conducted on 40 women with T2D and OAB symptoms, who were divided into two control and intervention groups. The control group performed pelvic floor muscle (PFM) training daily for one month, while the intervention group received 12 sessions of TTNS combined with PFM training. Before and after the intervention, the lower urinary tract symptoms were recorded using the Persian version of the International Consultation on Incontinence Modular Questionnaire for Female Lower Urinary Tract Symptoms (ICIQ-FLUTS). Independent t-test, paired t-test, Wilcoxon test, Mann-Whitney U test, and chi-square test were performed for data analysis using SPSS software, version 24. Results There was no significant difference between the two groups in the ICIQ-FLUTS score, incontinence quality of life, or PFM strength, and endurance (P>0.05). However, their scores were significantly different after treatment in each group compared to the pre-treatment phase (P≤0.05). Conclusion The combination of TTNS and PFM training has no advantage over PFM training alone in managing OAB symptoms and improving PFM strength and quality of life in women with T2D. [ABSTRACT FROM AUTHOR]

Background and Aim: Questionnaires are useful tools for clinicians. This study aimed to translate the Dizziness Handicap Inventory for Patient Caregivers (DHI-PC) into Persian (DHI-PC-P) and assess its psychometric properties for children aged 5-12 years. Methods: This is a descriptive-analytical psychometrics study. After obtaining permission from the developers of the DHI-PC, translation into Persian and cross-cultural adaptation were done according to the international guidelines for self-assessment tools recommended by the American Association of Orthopedic Surgeons. Participants were 21 parents (mean age: 38.05 years, SD=6.1 years, 18 female) and their children with dizziness (mean age 8.69 years, SD=2.41 years, 9 female) between the ages of 5-12 years old. Face validity, content validity, and test-retest reliability at an interval of 14-21 days were evaluated for the DHI-PC-P. Results: The face validity was confirmed qualitatively by the experts' opinions and quantitatively by calculating the item impact score. Content validity was confirmed by calculating the content validity index and the content validity ratio (0.97 and 0.86, respectively). The internal consistency was good (Cronbach's alpha=0.90). For the testretest reliability, the intraclass correlation coefficient was obtained 0.94, indicating an excellent reliability. Conclusion: The DHI-PC-P can be used clinically as a valid and reliable tool for children with dizziness aged 5-12 years. [ABSTRACT FROM AUTHOR]