Muscle Strength Of Upper Limbs Research Articles

Upper limb muscle strength and exercise endurance as predictors of successful extubation in mechanically ventilated patients

BackgroundFailed extubation increases the intensive care unit (ICU) length of stay, hospital length of stay, and financial costs and it reduces the patient’s functional ability. Avoiding failed extubation is of utmost importance, therefore predictors for successful extubation are paramount.ObjectiveTo determine if successful extubation in mechanically ventilated patients can be predicted by physiotherapists using upper limb muscle strength and exercise endurance.MethodsFifty-seven patients from the medical and trauma ICUs of a large academic hospital were eligible for testing. Muscle strength was evaluated using the Oxford grading scale, Medical Research Council score (MRC score), handgrip dynamometer, and maximum inspiratory pressure (MIP). Exercise endurance was tested while the patient was actively riding the MOTOmed® letto2 cycle ergometer for six minutes with the upper limbs.ResultsExercise endurance (time the patient rode actively) (P = 0.005), MRC-score (P = 0.007), and number of days ventilated (P = 0.005) were associated with successful extubation. The handgrip strength (P = 0.061), MIP (P = 0.095), and muscle strength of the sternocleidomastoid (P = 0.053) and trapezius muscles (P = 0.075) were marginally associated with successful extubation. Due to multicollinearity when developing the prediction equation, the final multivariable logistic regression prediction model included only exercise endurance and the number of days ventilated. The newly developed prediction equation conferred a sensitivity of 81.82% and a specificity of 77.14% to predict successful extubation.ConclusionSuccessful extubation of mechanically ventilated patients can be predicted by physiotherapists using the newly developed prediction equation consisting of exercise endurance and number of days ventilated.

The Different Body Mass Index Does Not Impact Physical Health in Older Adults without Sedentary Behavior: A Cross-Sectional Study.

This study aimed to compare and determine the correlation of BMI on physical health, including muscle strength, balance, and cardiorespiratory fitness in older adults without sedentary behavior. A total of 65 older adults without sedentary behavior were recruited and divided into 3 groups on the basis of body mass index (BMI): normal weight (n= 22/group), overweight (n= 22/- group), and obese (n= 21/group). All the older adults were evaluated for upper limb muscle strength using the handgrip strength test, lower limb muscle strength using the sit-to-stand (STS10) test, balance ability using the time up and go (TUG) test, and cardiorespiratory fitness using the 6-minute walk test (6MWT). The handgrip strength test, STS10 test, and distance of 6MWT showed no difference among the groups (p> 0.05). However, overweight group had a significantly longer duration for the TUG test when compared to normal weight, while obese group had a significantly longer duration for the TUG test when compared with overweight and normal weight groups (p< 0.01). In addition, BMI was positively correlated with the duration of the TUG test. Whereas, the handgrip strength test, STS10 test, and distance of 6MWT were not correlated with BMI. The BMI does not impact upper and lower limb muscle strength or the cardiorespiratory fitness test, except for the ability to balance in older adults without sedentary behavior.

Comparison of Feature Selection Methods—Modelling COPD Outcomes

Selecting features associated with patient-centered outcomes is of major relevance yet the importance given depends on the method. We aimed to compare stepwise selection, least absolute shrinkage and selection operator, random forest, Boruta, extreme gradient boosting and generalized maximum entropy estimation and suggest an aggregated evaluation. We also aimed to describe outcomes in people with chronic obstructive pulmonary disease (COPD). Data from 42 patients were collected at baseline and at 5 months. Acute exacerbations were the aggregated most important feature in predicting the difference in the handgrip muscle strength (dHMS) and the COVID-19 lockdown group had an increased dHMS of 3.08 kg (CI95 ≈ [0.04, 6.11]). Pack-years achieved the highest importance in predicting the difference in the one-minute sit-to-stand test and no clinical change during lockdown was detected. Charlson comorbidity index was the most important feature in predicting the difference in the COPD assessment test (dCAT) and participants with severe values are expected to have a decreased dCAT of 6.51 points (CI95 ≈ [2.52, 10.50]). Feature selection methods yield inconsistent results, particularly extreme gradient boosting and random forest with the remaining. Models with features ordered by median importance had a meaningful clinical interpretation. Lockdown seem to have had a negative impact in the upper-limb muscle strength.

Effects of shoulder brace usage on postural stability in stroke survivors: A pilot randomized controlled trial.

Despite advances in stroke rehabilitation, challenges in upper limb motor recovery and postural stability persist, negatively affecting overall well-being. Arm slings and shoulder braces have been proposed to address these issues, but their efficacy in promoting postural stability remains unclear. This pilot randomized controlled study aimed to evaluate the impact of a new shoulder brace (N1-Neurosling) on trunk postural stability during walking, pain, and upper limb muscle strength in chronic stroke survivors. Twenty-four adult chronic stroke patients were involved and randomly assigned to the shoulder brace group (SBg) or control group (CTRLg). Were assessed at baseline (T0) and after 4 weeks (T1) through the Trunk Control Test, the Numerical Rating Scale, the Motricity Index, Manual Muscle Test, and instrumental wearable-based assessment. After 4 weeks, the SBg showed significant improvement in Trunk Control Test scores (p = 0.020) and smoothness of gait measured by log dimensionless jerk along the Antero-Posterior axis (- 5.31±0.25 vs. - 5.18±0.27, p = 0.018) compared to the CTRLg. The SBg also demonstrated a reduction in pain in the shoulder girdle and enhanced upper limb muscle strength. The use of the N1-Neurosling shoulder brace led to improvements in postural stability and smoothness of gait in stroke patients.

The Impact of a 12-Week Aqua Fitness Program on the Physical Fitness of Women over 60 Years of Age.

This study aimed to assess the impact of a 12-week Aqua Fitness program on the physical fitness of older women and emphasize sustainable health practices for aging populations. We focused on evaluating the program's effectiveness, using the Senior Fitness Test to measure improvements in physical capabilities. An experimental research design was implemented, with 30 participants aged 60 and older. The participants were divided into a control group and an experimental group, each comprising 15 individuals. The control group received aqua Fitness exercises, and the experimental group received aqua fitness exercises and isometric (combined) exercises. Lower limb muscle strength, upper limb muscle strength, lower body flexibility, upper body flexibility, dynamic balance, agility, and endurance were assessed using the Senior Fitness Test. Assessments were conducted pre- and post-training. For a comparison within the group, combined exercises (aqua fitness and isometric exercises) had a significant effect on lower limb muscle strength, upper limb muscle strength, lower body flexibility, upper body flexibility on the right side, dynamic balance, agility, and endurance. Aqua fitness exercises alone showed significant effects on upper limb muscle strength, lower body flexibility, and endurance and no significant effects on other variables. For the comparison between groups, no significant differences were found between the effects of aqua fitness exercises and combined exercises on lower limb muscle strength, upper limb muscle strength, lower body flexibility, upper body flexibility, and endurance. Significant differences were found only in dynamic balance and agility between the two groups of aqua fitness and combined exercises. Although the combined program (aqua fitness and isometric exercises) had a greater effect on improving the physical fitness of older adults than aqua fitness alone, there was no significant difference between the two groups. Therefore, the results of this study highlight the potential of aqua fitness in promoting sustainable health and physical fitness in the older adult population.

Relationship between Femur Mineral Content and Local Muscle Strength and Mass.

Among the stimuli able to prevent early decreases in bone mineralization, exercise has a noticeable role per se as the source of mechanical stimulus or through lean tissue enlargement by its increasing of tensional stimulus. However, prevention strategies, including exercise, generally do not establish the moment in life when attention should begin to be paid to bone integrity, according to age group- and sex-related differences. Thus, this study analyzed the relationship between variables from the diagnosis of total and regional body composition, muscle strength, and bone mineral content (BMC) of femurs in young adult males. Thirty-four young Caucasian men (24.9 ± 8.6 years) had their body composition and bone density assessed by dual X-ray absorptiometry. The subjects performed a one-repetition maximum test (1-RM) in a bench press, front pulley, seated-row, push press, arm curl, triceps pulley, leg flexion, leg extension, and 45° leg press for the assessment of muscle strength in upper and lower limbs in single- and multi-joint exercises. Lean tissue mass in the trunk and upper and lower limbs were related to femoral BMC (Pearson coefficient ranging from 0.55 to 0.72, p < 0.01), and 1-RM values for different exercises involving both upper and lower limbs also correlated with femoral BMC (Pearson coefficients ranging from 0.34 to 0.46, p < 0.05). Taken together, these correlations suggest that muscle mass and strength are positively linked with the magnitude of femoral mass in men, even in early adulthood. Hence, the importance of an enhanced muscle mass and strength to the health of femoral bones in young adults was highlighted.

Brisk walking improves motor function and lower limb muscle strength in Chinese women aged 80years and older.

This study investigates the effects of a 12-week brisk walking exercise regimen on motor function improvements in elderly women. Twenty-six elderly women, aged 84.2 ± 3.2years, participated in a 12-week brisk walking exercise program. Fitness assessments and blood biomarker analyses (including CHO, HDLC, LDLC, TC) were conducted pre- and post-intervention. Additionally, targeted metabolomics was employed to measure short-chain fatty acids, amino acids, and vitamin metabolites. The intervention led to significant enhancements in participants' flexibility (p < 0.05), lower limb muscle strength (p < 0.01), and cardiorespiratory endurance (p < 0.01), while muscle mass showed no significant changes. Fifteen significant differential metabolites were identified (VIP > 1.0, FC > 1.2 or < 0.8, and p < 0.05), with arginine, ornithine, aspartic acid, glutamine, phenylalanine, tyrosine, and pantothenic acid playing key roles across seven metabolic pathways. A 12-week brisk walking exercise program significantly enhanced flexibility, lower limb muscle strength, and cardiorespiratory endurance among elderly women. These improvements did not extend to muscle mass or upper limb muscle strength. The observed enhancement in exercise capacity may be attributed to improved regulation of neurotransmitters.

Physical fitness levels and trends of kindergarteners in Hong Kong during the COVID-19 pandemic

Background/objectivesThe study aimed to examine the physical fitness and activity levels of kindergarteners in Hong Kong during the coronavirus disease 2019 pandemic. MethodsA total of 2052 kindergarteners (48% girls; 32.9% Grade 1, 34% Grade 2, and 33.1% Grade 3) were recruited from July 2020 to November 2021. Participants completed the physical fitness tests, including body composition, flexibility, lower-limb muscle strength, upper-limb muscle strength, lower-limb muscle endurance, and agility. Children's physical activity and overall well-being were examined using parental proxy reports. Parents also reported their physical activity and parental support to children's physical activity engagement, as well as their perception of children's kindergarten physical activity environment. Fitness differences by age and gender were analyzed using one-way ANOVA and ANCOVA measuring effect size with partial eta-squared. Additionally, correlations assessed the relationship between children's fitness and parents' proxy reports. ResultsThe results of the physical fitness tests were higher than those in previous studies conducted by the Physical Fitness Association of Hong Kong in 2015–2018. Gender-based differences were observed in most tests for children aged 4 years and older, with boys showing higher scores in the standing long jump, shot put, and balance tests, while girls had higher scores in the sit-and-reach test. Parents' proxy questionnaire answers indicated that children's continuous jump test performances were significantly related to their frequency of physical activity per week (r = 0.19, p < 0.001), and that children's health was significantly and positively correlated with their fitness level (r = 0.179, p < 0.009). Inadequate school physical activity was associated with poor upper-limb strength (r = 0.078, p < 0.005). Moreover, a high level of parental support for their children's participation in physical activity was correlated with a high level of parental participation in vigorous-intensity physical activities (r = 0.167, p < 0.005). ConclusionThe physical fitness of children in Hong Kong was less affected by the epidemic. Parents' healthy behaviors and support were related to children's participation in PA. Efforts to improve children's physical fitness and motor development should include parent education and physical activity involvement.

Triboelectric micro-flexure-sensitive fiber electronics

Developing fiber electronics presents a practical approach for establishing multi-node distributed networks within the human body, particularly concerning triboelectric fibers. However, realizing fiber electronics for monitoring micro-physiological activities remains challenging due to the intrinsic variability and subtle amplitude of physiological signals, which differ among individuals and scenarios. Here, we propose a technical approach based on a dynamic stability model of sheath-core fibers, integrating a micro-flexure-sensitive fiber enabled by nanofiber buckling and an ion conduction mechanism. This scheme enhances the accuracy of the signal transmission process, resulting in improved sensitivity (detectable signal at ultra-low curvature of 0.1 mm−1; flexure factor >21.8% within a bending range of 10°.) and robustness of fiber under micro flexure. In addition, we also developed a scalable manufacturing process and ensured compatibility with modern weaving techniques. By combining precise micro-curvature detection, micro-flexure-sensitive fibers unlock their full potential for various subtle physiological diagnoses, particularly in monitoring fiber upper limb muscle strength for rehabilitation and training.

Muscle strength and body composition in obese adults following nine months of yoga or nutrition advice: A comparative controlled trial

IntroductionMuscle strength is impaired in obese persons due to low physical activity, obesity-related modifications in muscle morphology and as a consequence of calorie regulation (where applicable). Previously decreased BMI and increased hand grip strength was reported following a short duration yoga intervention in obese adults. MethodsThe present comparative controlled study was conducted on two hundred and ninety seven obese adults (BMI ≥25 Kg/M2) aged between 20 and 59 years, to determine the effects of nine months of yoga or nutrition advice on muscle strength and body composition. Participants were assessed for bilateral hand grip strength, leg and back strength, and body composition at baseline, after 3 months, 6 months and 9 months of yoga or nutrition advice. BMI-adjusted bilateral hand grip strength and leg and back strength were calculated. ResultsIn the linear mixed model analyses, there was a significant interaction effect of Time X Groups for (i) right hand grip strength (F3,668.465 = 9.297, p < 0.001), (ii) left hand grip strength (F3,673.408 = 14.469, p < 0.001), (iii) BMI-adjusted right hand grip strength (F3,650.542 = 9.954, p < 0.001) and (iv) BMI-adjusted left hand grip strength (F3,655.518 = 13.853, p < 0.001). Bonferroni corrected post-hoc analyses (padj < 0.05; in all cases) showed a significant increase in (i) bilateral hand grip strength and (ii) BMI-adjusted right and left hand grip strength in the yoga group while a decrease in (i) bilateral hand grip strength and (ii) BMI-adjusted right and left hand grip strength in the nutrition advice group. ConclusionYoga practice appears to protect and increase upper limb muscle strength in obese adults.

Short-term effects of Pilates-based exercise on upper limb strength and function in people with Parkinson's disease

BackgroundPeople with Parkinson's disease (PD) have impaired upper limb motor coordination, limiting the execution of activities of daily living. This study investigated the feasibility and safety of a short-term Pilates-based exercise program in the treatment of upper limb motor coordination for people with PD. MethodsFifteen patients – n (%) 4 women/11 men (27/73), median [interquartile range] age 66 [9] years – participated in this quasi-experimental (before-and-after) clinical trial. Patients underwent a 6-week (30 min/day, 3 days/week) Pilates exercise program using Reformer, Cadillac, Chair, and Barrel equipment. Feasibility was evaluated by adherence to the program and the ability to perform the exercises including progressions on difficulty. Safety was evaluated based on self-reported adverse events. Clinical and functional trends before and after the intervention were also computed regarding handgrip strength (HGS), fine motor coordination (9 Hole Peg Test; 9HPT), bradykinesia (Movement Disorder Society – Unified Parkinson's disease Rating Scale; MDS-UPDRS), and upper limb functionality (Test D'évaluation des Membres Supérieurs des Personnes Âgées, TEMPA). ResultsOf the 18 Pilates sessions, exercise adherence was 100%. The only adverse event observed was mild muscle pain. Pre-post differences were observed only for body bradykinesia and hypokinesia (1.0 [0.0] vs. 0.0 [1.0] s, adjusted p = 0.048). ConclusionsA short-term Pilates-based exercise program in the treatment of upper limb muscle strength, manual dexterity, bradykinesia, and functionality is feasible and safe for people with PD. Changes in upper limb bradykinesia encourage randomized clinical trials.

Association among muscle strength from upper and lower limb with risk of falls in elderly

Background: Falls represent a serious public health problem, especially for the elderly, and are associated with high rates of morbidity and mortality, decreased functional capacity, and early institutionalization. Falls have a multifactorial etiology, with muscle weakness being a significant risk factor. Objectives: To analyze the association between upper and lower limb muscle strength and the risk of falls in the elderly. Methods: This is a cross-sectional observational study with 81 individuals aged ≥ 60 years. Participants were subjected to the following assessment instruments International Physical Activity Questionnaire - IPAQ (short version), the Timed Up and Go Test (TUG), the handgrip strength test (HST), and the 30-second chair stand test. Results: Associations were observed between physical activity and HST (p = 0.004) and TUG (p = 0.010). Age was significantly associated with performance in the chair stand and rise test (p = 0.042) and TUG (p &lt; 0.001). Multiple linear regression demonstrated that HST and age are predictors of the risk of falls. Conclusion: Low HST is a predictor of falls in the elderly (determined by TUG). Physically active elderly individuals had higher HST and a lower risk of falls compared to insufficiently active elderly individuals.

Case Report of Cylindrical Grip on Improving Upper Limb Muscle Strength of SNH Patient

Non-hemorrhagic stroke patients who do not get optimal treatment will experience disability or physical weakness such as paralysis and weakened muscle strength, which results in a lack of joint range of motion, limb function, and decreased daily life activities. One of the ROM techniques to help recover the upper extremities to stimulate the hands, can be done with cylindrical grip exercises which are functional hand exercises by grasping a cylindrical object in the palm of the hand which aims to support the recovery of the ability to move and function of the hand. Objective: This case repost aims to determine the effect of giving cylindrical grip to stroke ptients to increase muscle strengt in the upper extremities. Method: The method used is a descriptive case report design based on Evidance Based Nursing (EBN) conducted on two subjects with non-hemorrhagic stroke. Results: After the implementation of ROM exercise nursing: cylindrical grip for 3 days in each patient starting from 18-22 September 2023 which was carried out for 5 minutes and repeated 7 times, changes were obtained in the muscle strength of Mrs.M's right hand which was originally 3 to 4 and Mr.W which was originally left hand muscle strength 2 to 4. Conclusions: ROM Exercise: Cylindrical grip can improve upper extremity muscle strength in non-hemorrhagic stroke patients.

Osteoporotic phenotype of body composition: Relationship with nutritional status and physical condition in women with rheumatoid arthritis

Aim of the study – to assess the relationship of the osteoporotic phenotype of body composition with nutritional and physical status in women with rheumatoid arthritis (RA).Material and methods. 104 women (average age 59.5±8.7 years) with RA were enrolled. The examination included clinical, laboratory and instrumental (dual-energy X-ray absorptiometry) methods. Nutritional status was assessed using the Mini Nutrition Assessment-Short Form (MNA-SF), physical status – using the International Physical Activity Questionnaire (IPAQ), “Chair stand test”, handgrip strength, “Timed Up and Go test” and gait speed.Results. Osteoporotic phenotype was diagnosed in 38.5% of patients. Malnutrition and risk of malnutrition according to MNA-SF had 51.0% of women. Low and moderate level of physical activity according to IPAQ – 51.9% of patients. In multivariate logistic regression analysis, independent factors associated with osteoporotic phenotype were determined: walking &lt;30 minutes a day (odds ratio (OR) – 1.34; 95% confidence interval (95% CI): 0.11–17.32), low muscle strength of the upper extremities (handgrip strength less than 16 kg) (OR=7.12; 95% CI: 1.02–49.57) and lower extremities (“Chair stand test” more than 15 seconds) (OR=4.45; 95% CI: 1.08–18.42), body mass index (BMI) less than 25 kg/m2 (OR=1.39; 95% CI: 1.04–1.85).Conclusion. A high frequency of the osteoporotic phenotype of body composition was revealed in patients with RA, among whom almost half of the examined individuals had insufficient nutrition and/or reduced physical activity. Walking &lt;30 minutes a day, low upper and lower limb muscle strength, and BMI&lt;25 kg/m2 were associated with the osteoporotic phenotype.

Assessing the Therapeutic Impact of Virtual Reality Interventions on Upper Limb Range of Motion and Functional Mobility in Pediatric Patients with Spastic Hemiplegic Cerebral Palsy: A Faisalabad-based Study

Cerebral palsy is a non-progressive central nervous system injury, most common in children, resulting from the damage to brain. Objectives: To see the effects of non-immersive virtual reality on range of motion, muscle strength, spasticity and functional mobility of upper limb in spastic hemiplegic cerebral palsy children. Methods: This was a quasi-experimental study, in which participants were selected through simple random sampling on the basis of defined selection criteria, there were two groups. Group A received conventional physical therapy exercises and group B was a received functional mobility exercises using non-immersive virtual reality. Data collection tools included Modified Ashworth scale to measure the spasticity, Functional assessment scale for functional status, Goniometer was used to measure the rage of mobility and Manual muscle testing MMT was used to measure the strength. Data was analyzed by SPSS version 26. Results: Mean age of children was 9.818 ± 2.639. From total participants 63.6% were males and 36.4% were females CP child. Paired-t test sowed that, there was a statistically significant difference in means of all outcome measures before and after treatment in group-A as well as in group–B (p-value&lt;0.05). Between-group analysis of A and B showed a statistically significant difference with p-value ≤0.05. Conclusions: Both groups showed improvement in spasticity, functional status, range of motion and muscle strength, but treatment group receiving functional mobility exercises using non-immersive virtual reality was found to be more effective than the control group.

농촌지역 여성노인의 신체적 여가활동 참여가 신체적 기능과 삶의 질에 미치는 효과

Objective: This study aimed to assess the effects of a physical leisure activity program on the physical function and health-related quality of life of elderly women in rural areas. Methods: One hundred and thirteen elderly women living in rural communities participated using a one-group pre-post design. The physical leisure activity program was conducted for 16 group activities over 8 weeks. To determine changes in the physical function of the elderly after participation, muscle strength, flexibility, and balance ability were measured, and the 8 domain Short-Form Health Survey (SF-8) was used to examine changes in quality of life. Results: The physical function of the participants in the program was significantly increased in upper and lower limb muscle strength, balance, and flexibility (p &lt; 0.05). The total score of QOL of elderly women who participated in the program also improved from 335.73 ± 52.93 points to 395.42 ± 28.79 points, and significantly changed in all sub-items (p &lt; 0.05). Conclusion: Participation in leisure activities was confirmed effective not only in improving the physical health of the elderly women, but also in improving their quality of life. In the future, we look forward to the development and support of various participatory activity programs suitable for rural areas.

Analysis of Superior Extremity Strength on the Groundstroke Attack Skills of Tennis Athletes

A tennis player must be able to produce groundstroke attacks effectively because these strokes have an important strategic role in controlling and dominating the course of the match. To produce a groundstroke attack, a tennis player must have muscle strength in the superior extremities, because the superior extremities are the primary source of kinetic energy required to transfer momentum to the racket. Apart from that, good coordination between the muscles of the arms, shoulders, and back is also important to achieve optimality in groundstroke attacks. In a coordinated movement, energy from the tennis player's body is transferred through the arms to the tip of the racket when the racket makes contact with the ball. The aim of this study was to determine how much influence superior extremity strength has on forehand groundstroke skills. The type of research used is a correlational description, involving the independent variable being superior extremity muscle strength while the dependent variable is forehand groundstroke attack skill. The research sample was 20 POMNAS South Sulawesi tennis athletes taken by purposive sampling. The instruments used were the Bouncing Medicine Ball Test and the Hewitt Tennis Performance Test. Analysis through a correlation regression test. The results concluded that the ability to groundstroke attack was influenced by upper limb muscle strength by 59.3%.

Comparing the efficacy of low-load resistance exercise combined with blood flow restriction versus conventional-load resistance exercise in Chinese community-dwelling older people with sarcopenic obesity: a study protocol for a randomised controlled trial

IntroductionSarcopenic obesity (SO) is characterised by decreased muscle mass, diminished muscle strength and/or reduced physical performance and a high percentage of body fat (PBF). Conventional-load resistance exercise (CRE) may be difficult for older people with SO owing to their declining physical functions. Low-load resistance exercise (LRE) combined with blood flow restriction (BFR; LRE-BFR) is a viable alternative to CRE for improving muscle mass and strength and potential exercise mode for managing SO. This study has two objectives: (1) to comprehensively evaluate the efficacy of CRE and LRE-BFR in improving body composition, muscle strength, physical performance, haematological parameters, cardiovascular disease (CVD) risk factors and quality of life and (2) to compare the efficacy of CRE and LRE-BFR and explore their potential mechanisms.Methods and analysisThis work is a 12-week assessor-blinded randomised clinical trial that will be conducted thrice a week. Sarcopenia will be defined using the Asian Working Group for Sarcopenia 2019, and obesity will be determined using the criteria developed by the World Health Organization. Community-dwelling older people aged ≥ 65 years will be screened as the participants using inclusion and exclusion criteria. A total of 33 participants will be randomised into a CRE group (n = 11), an LRE-BFR group (n = 11) and a control group that will be given only health education (n = 11). The primary outcomes will be knee extensor strength and PBF, and the secondary outcomes will be body composition, anthropometric measurements, muscle strength of upper limbs, physical performance, haematological parameters, CVD risk factors and quality of life. The outcomes will be measured at the baseline (week 0), end of the intervention (week 12) and follow up (week 24). All the collected data will be analysed following the intention-to-treat principle.Ethics and disseminationThe Ethics Research Committee has approved this study (approval No. CMEC-2022-KT-51). Changes or developments in this study will be reported at www.chictr.org.cn.Trial registrationChiCTR2300067296 (3 January 2023).

Development and Validation of an Artificial Intelligence-Based Motion Analysis System for Upper Extremity Rehabilitation Exercises in Patients with Spinal Cord Injury: A Randomized Controlled Trial.

In this study, we developed an AI-based real-time motion feedback system for patients with spinal cord injury (SCI) during rehabilitation, aiming to enhance their interest and motivation. The effectiveness of the system in improving upper-limb muscle strength during the Thera band exercises was evaluated. The motion analysis program, including exercise repetition counts and calorie consumption, was developed using MediaPipe, focusing on three key motions (chest press, shoulder press, and arm curl) for upper extremity exercises. The participants with SCI were randomly assigned to the experimental group (EG = 4) or control group (CG = 5), engaging in 1 h sessions three times a week for 8 weeks. Muscle strength tests (chest press, shoulder press, lat pull-down, and arm curl) were performed before and after exercises. Although both groups did not show significant differences, the EG group exhibited increased strength in all measured variables, whereas the CG group showed constant or reduced results. Consequently, the computer program-based system developed in this study could be effective in muscle strengthening. Furthermore, these findings may serve as a valuable foundation for future AI-driven rehabilitation exercise systems.

Cyberrehab: Empowering Hemiparesis Recovery with Affordable Mobile Virtual Reality Solutions for Upper Limb Strength

Background: Hemiparesis is a debilitating condition characterized by weakened muscle strength in one side of the body, often caused by stroke or brain injury. Rehabilitation is crucial for improving upper limb muscle strength and functional recovery in individuals with hemiparesis. Mobile-based Virtual Reality (VR) programs have emerged as an innovative and cost-effective approach to augment conventional physiotherapy in rehabilitation. This study investigates the efficacy of a low-cost mobile VR intervention in enhancing upper limb muscle strength and motivating individuals with hemiparesis to actively engage in their recovery. Methods: A quasi-experimental study was conducted with 20 participants, divided into two groups: an experimental group receiving the combined intervention of mobile-based VR programs and conventional physiotherapy, and a control group receiving only conventional physiotherapy. The intervention spanned four weeks, with sessions held three days a week. Pre-test and post-test measurements were taken for various upper limb muscle groups using Manual Muscle Testing (MMT). Correlation analyses were conducted to assess the effectiveness of the intervention. Results: The results revealed a strong and statistically significant positive correlation between pre-test and post-test MMT scores in the experimental group, indicating substantial improvements in upper limb muscle strength. In contrast, the control group exhibited more modest gains. The integration of mobile-based VR programs led to increased motivation and engagement among participants, contributing to better adherence to the rehabilitation routine. Conclusion: The integration of affordable mobile VR solutions in hemiparesis rehabilitation presents a promising approach to empower individuals on their journey to recovery. By improving upper limb muscle strength and motivating active participation in rehabilitation, mobile VR interventions like "CyberRehab" have the potential to revolutionize the field of hemiparesis recovery, ultimately enhancing the quality of life for those affected by this condition.