Effects of different warm-up methods on 50-meter breaststroke swimming performance.

Purpose: To examine the effects of different warm-up methods on 50 m breaststroke performance in both breaststroke specialists and individual medley swimmers.

Methods: 18 swimmers (breaststroke group: 9, individual medley group: 9) who met the qualification standards for the National Intercollegiate Athletic Games participated in this study. Each participant completed four different warm-up protocols (a conventional 1,400 m warm-up and a 700 m conventional warm-up that integrated tubing-assisted (TA), paddle (PD), or squat (SQ) warm-ups) over four separate days.

Neuromuscular factors predicting lower limb explosive strength in male college sprinters.

Purpose: This study aimed to explore the effects of neural and muscular factors on lower limb explosive strength in male college sprinters, and build models based on those factors to identify the key neuromuscular factors that predict the rate of force development (RFD) and 30 m sprint time.

Method: 15 male college sprinters were recruited in this study, with 100 m personal best times under 10.93 s.

Male-assisted training and injury patterns: hypergraph-enhanced analysis of injuries in women's water polo.

Introduction: The aim of this study is to compare the injury patterns of female water polo players before and after the implementation of the Male-Assisted Female Training (MAFT) program. The study seeks to identify key factors influencing these changes and propose corresponding injury prevention measures.

Methods: We utilized pattern analysis and classification techniques to explore the injury data.

High glucose induces pro-inflammatory polarization of macrophages by inhibiting immune-responsive gene 1 expression.

Objectives: To investigate the effect of high glucose on macrophage polarization and the role of immune-responsive gene 1 (IRG1) in mediating its effect.

Methods: RAW264.7 cells were transfected with IRG1-overexpressing plasmid or IRG1 siRNA via electroporation and cultured in either normal or high glucose for 72 h to observe the changes in cell viability and morphology using CCK-8 assay and phase contrast microscopy.

Neuromuscular Strategies in Dominant and Non-Dominant Legs in Dancers During Dynamic Balance Tasks.

Ballet-based dance training emphasizes the equal development of both legs. However, dancers often perceive differences between their legs during balance or landing. There still needs to be more consensus on the functional difference between dominant (D) and non-dominant legs (ND).

The effects of mobile phone addiction on learning engagement of Chinese college students - the mediating role of physical activity and academic self-efficacy.

Background: With the widespread adoption of smartphones, mobile phone addiction has increasingly gained prominence among Chinese college students, exerting a profound and detrimental impact on their learning engagement. This study employs self-determination theory as a framework to examine the mechanisms through which mobile phone addiction affects students' learning engagement. Specifically, it examines the mediating effects of physical activity and academic self-efficacy in this relationship.

Relative validity and reproducibility of a short semi-quantitative food frequency questionnaire for Chinese athletes.

A convenient but efficient tool for evaluating dietary intakes in Chinese professional athletes has yet to be established. The aim of this study was to assess the validity of a short semi-quantitative food frequency questionnaire (FFQ) through comparison with 3-day weighed food records (3DWFRs) and corresponding serum biomarkers from a cohort of 102 professional athletes, while also evaluating its reproducibility. The relative validity was assessed using Spearman correlation coefficients, cross-quintiles classification, weighted kappa, and Bland-Altman analysis, while reproducibility was evaluated using the Spearman correlation coefficients and intraclass correlation coefficient (ICC) between two FFQs.

Integrating Rehabilitation Services into Routine Care of Rheumatoid Arthritis May Reduce the Inflammatory Response: A Hospital-Based Follow-Up Study in Taiwan.

For persons with rheumatoid arthritis (RA), the accompanying systemic inflammatory conditions often insidiously damage extra-glandular organs, causing poor outcomes. Despite evidence manifesting the application of rehabilitation services (RSs), the association between RSs use and changes in the inflammatory response among persons with RA has not yet been established. With that in mind, this study aimed to evaluate changes in C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) before and after long-term RSs use.

Development of a 23-Gene Signature for Tumor Growth Mechanism in Vestibular Schwannoma.

: Transcriptome profiling can reveal prognostic biomarkers and therapeutic vulnerabilities for directing clinical care. Currently, there are no biomarkers that can accurately predict patient prognosis regarding tumor growth and the tumor immune microenvironment in vestibular schwannomas. This study aimed to investigate the mechanisms of tumor growth using bulk RNA-seq and single-cell data from patients with vestibular schwannomas.

Cellular Core/Sheath Filaments with Thermoresponsive Vacuum Cavities for Prolonged Passive Temperature-Adaptive Thermoregulation.

Acting as the interface between the human body and its environment, clothing is indispensable in human thermoregulation and even survival under extreme environmental conditions. Development of clothing textiles with prolonged passive temperature-adaptive thermoregulation without external energy consumption is much needed for protection from thermal stress and energy saving, but very challenging. Here, a temperature-adaptive thermoregulation filament (TATF) consisting of thermoresponsive vacuum cavities formed by the temperature-responsive volume change of the material confined in the cellular cores of the filament is proposed.

Effects of Possible Sarcopenia on Physical Fitness, Gait, and Fear of Falling of Older Adults.

Background: We aimed to determine the differences in physical fitness between older adults with and without indicators of possible sarcopenia and the associations between possible sarcopenia and fear of falling.

Methods: Individuals aged >75 years living in Harbin City, China in 2023 were recruited through a local community center. The presence of possible sarcopenia was defined using the Asian Working Group for Sarcopenia 2 criteria via grip strength measurement, with cut-off points of >28 kg for men and >18 kg for women.

Vitamin D status and its determinants in German elite athletes.

Purpose: This study investigated elite German athletes to (1) assess their serum 25(OH)D levels and the prevalence of insufficiency, (2) identify key factors influencing serum 25(OH)D levels, and (3) analyze the association between serum 25(OH)D levels and handgrip strength.

Methods: In this cross-sectional study, a total of 474 athletes (231 female), aged 13-39 years (mean 19.3 years), from ten Olympic disciplines were included.

Timing is everything: the age-related impact of plyometric training on lower limb explosive strength in male adolescents and its general effectiveness in female adolescents.

Objective: This study investigates the impact of plyometric training on age-related lower limb explosive strength in male adolescents and its effectiveness in female adolescents.

Methods: A thorough search was conducted across five databases from their inception until September 20, 2024. Study quality was assessed using the Cochrane Risk Assessment Tool, and data analysis was performed with Stata 15 software.

Cross sectional associations of physical activity and sleep with mental health among Chinese university students.

Objective: This study aimed to examine the levels of physical activity (PA), sleep, and mental health (MH), specifically depression, anxiety, and stress, among Chinese university students. It also aimed to analyze the influencing factors of MH, providing a theoretical foundation for developing intervention programs to improve college students' mental health.

Methods: A stratified, clustered, and phased sampling method was employed.

Portions of the force-velocity relationship targeted by weightlifting exercises.

We compared the force-velocity (F-V) characteristics between jump squat (JS) and weightlifting (hang clean [HC] and HC pull [HCP]) to determine lower limb F-V portions targeted by weightlifting exercises. Ten weightlifters performed JS at 0% (body weight only) to 70% of their one-repetition maximum (1RM) for back squat, and HC and HCP at 30‒90% and 30‒110% of their 1RM for HC, respectively. Force and velocity values at each relative load were plotted to determine the F-V features of JS, HC, and HCP.

Handgrip Strength has Declined Among Adults, Particularly Males, from Shanghai Since 2000.

Background: Handgrip strength (HGS) is an excellent marker of general strength capacity and health among adults. We aimed to calculate temporal trends in HGS for adults from Shanghai between 2000 and 2020.

Methods: Adults aged 20-59 years from Shanghai, China, were included.

Inspiratory muscle resistance combined with strength training: effects on aerobic capacity in artistic swimmers.

Objective: This study aimed to investigate the effects of combining inspiratory muscle resistance with strength training on lung function and aerobic capacity in artistic swimmers.

Methods: This research constitutes a placebo-controlled randomized trial, involving a five-week walking program conducted twice a week. Fourteen female artistic swimmers were randomly assigned to either the experimental group (TG group,  = 7) or the control group (CG group,  = 7).

Impact of postural variations on trunk rotation angle during the forward bending test in adolescents idiopathic scoliosis.

Purpose: To evaluate the impact of different positions of adolescent idiopathic scoliosis (AIS) patients and examiners on the angle of trunk rotation (ATR) measured during the forward bending test (FBT) with Scoliometer.

Methods: Adolescents who had come to the hospital for outpatient were recruited. Considering the location of the subject and the examiner, four postural combinations of ATR were measured.

The role of motivation in selection processes-comparing sports and business.

Talent identification and selection in sports pose significant challenges, necessitating a nuanced understanding of factors influencing athletes' elite-level potential. While physical and physiological aspects have conventionally played roles in the selection process, also other constructs of talent development have to be considered. Various talent models have included psychological aspects, especially motivation, as either moderators or catalysts.

A bibliometric analysis of mental health among high school students.

Background: In recent years, with the increase in academic pressure and changes in social environment, especially after the outbreak of COVID-19, there has been a significant impact on the mental health of high school students. This trend, which is concerning, requires a systematic bibliometric analysis to develop effective preventive and remedial measures.

Objective: This study aims to identify and analysis the research hotspots, frontiers and emerging trends in the field of high school students' mental health over the past two decades using CiteSpace software.

Causal relationship between physical activity and scoliosis: A Mendelian randomization study.

Scoliosis, marked by abnormal spinal curvature, is common in adolescents and can lead to chronic pain and reduced quality of life. The relationship between physical activity and scoliosis is debated. In this study, we aim to investigate the causal relationship between physical activity levels and idiopathic scoliosis risk using the Mendelian randomization (MR) approach.

Improvements in Walking During Subacute Stroke Rehabilitation Translate to Physical Activity at the Chronic Stage: A Sub-Analysis From the Phys Stroke Trial.

Unlabelled: Stroke frequently results in mobility impairments, contributing to an increased cardiovascular risk. Despite efforts to promote physical activity, stroke survivors fail to meet recommended levels. This secondary analysis of the 'Physical Fitness in Patients with Subacute Stroke' (Phys-Stroke) trial analyzes physical activity at 6 months post-stroke, and examines the effect of gains in walking capacity during the subacute phase on physical activity in the chronic stage.

Efficacy of Blood Flow Restriction Exercise for Improving Lower Limb Muscle Strength and Function in Chronic Spinal Cord Injury: A Randomized Controlled Trial.

The objective of the present study was to evaluate the efficacy of low-load (LL) blood flow restriction exercise (BFRE) for improving lower limb muscle strength, muscle thickness and physical function in individuals with spinal cord injury (SCI). In a randomized sham-controlled trial, 21 participants (age ≥ 18 years, SCI duration ≥ 1 year, knee extensor strength grade 2-4, ASIA A-D) were randomized to either 45-min LL-BFRE (n = 11) or sham BFRE (n = 10) twice/week for 8 weeks. The exercise protocol consisted of four sets (30 × 15 × 15 × 15 repetitions) of unilateral seated leg extensions and leg curls at 30%-40% of 1RM performed with pneumatic cuffs applied proximally on the trained limb and inflated to 40% of total arterial occlusion pressure (BFRE) or non-inflated (sham exercise).