BMC Sports Science Medicine and Rehabilitation最新文献

This study investigated whether blood flow restriction moderate-intensity interval training (BFR-MIIT) could achieve or surpass the training effects of high-intensity interval training (HIIT) at lower training intensities. A total of 33 male college basketball players completed the trial and were randomly assigned to the BFR-MIIT group (n = 17) and the HIIT group (n = 16). Both groups performed the 4 × 4 "Norwegian" training method, with the BFR-MIIT group engaging in moderate-intensity training and the HIIT group in high-intensity training. Assessments included the Wingate Anaerobic Power Test, the multistage 20-meter shuttle run test, and tests of jumping ability (countermovement jump (CMJ), squat jump (SJ), and drop jump (DJ)), sprinting ability (30-meter sprint), and change of direction ability (505 test). Post-intervention, both the BFR-MIIT group (p < 0.001, ES=-1.199) and the HIIT group (p = 0.02, ES=-0.526) showed significant and equivalent improvements in VO_2max. However, neither group significantly improved peak power (PP) or relative peak power (PP/kg). The BFR-MIIT group demonstrated superior improvements in lower extremity performance compared to the HIIT group in CMJ (p = 0.007; ES=-0.570), SJ (p < 0.001; ES=-0.537), DJ (p < 0.001; ES=-0.805), and the 505 test (p < 0.001; ES = 1.708). Additionally, across four measurements of the Rate of Perceived Exertion (RPE), the BFR-MIIT group reported significantly lower RPE than the HIIT group (p < 0.05). In conclusion, compared to HIIT, BFR-MIIT can achieve equivalent improvements in aerobic capacity at lower training intensities and perceived exertion while yielding better improvements in lower extremity performance.

Background: Dual-task walking is used as a treatment, for gait assessment, and as an outcome measure in Parkinson's disease (PD). Movement smoothness, i.e. its non-intermittency, is a movement cardinal feature. This study assesses whether dual-tasking reduces gait smoothness in PD alongside reducing speed, one of its well-known effects.

Methods: The Timed Up and Go (TUG) test, instrumented with an inertial sensor fixed to the back, was administered to 33 PD patients (15 females; age: median = 71 years; IQR = 10) to assess two walking types: straight-walking and turning-while-walking. The TUG test was completed in single-task and two dual-task modalities: cognitive (doing successive subtractions) and motor (holding a water glass). The angular speed spectral arc length metric (SPARC) and the Ln-DimensionLess Jerk (LDLJ), two smoothness measures quantifying the peaks and dips in the speed profile, were measured, along with the trunk angular velocity and the foot strikes number. ANOVA was used for hypothesis testing and estimated marginal means for post-hoc tests and effect sizes (ES).

Results: In straight-walking and turning, cognitive and motor dual tasks decreased gait speed (ES range = [0.476, 1.379]; p < 0.01) and increased the step number (ES = [0.402, 0.927]; p < 0.05). SPARC (ES = [0.221, 0.493]; p < 0.05) and angular LDLJ (ES = [0.451, 0.929]; p < 0.01) were lower in the two dual-task conditions in both phases, indicating reduced gait smoothness than in single-task. This worsening of gait smoothness was partially confirmed after ruling out the dual-task effect on speed and step number. In particular, anterior-posterior SPARC during turning was still low in cognitive (ES = 0.351; p < 0.01) and motor (ES = 0.283; p < 0.05) dual tasks.

Conclusions: In PD, dual-tasking decreases gait speed and increases the step number when walking straight and turning while walking. Independently of these effects, dual-tasking also reduces gait smoothness. As an independent feature of movement, when dual-task walking is the outcome measure, improving smoothness may represent a novel treatment aim in PD. As long as it is instrumented with an inertial sensor, the TUG test is valuable for studying different walking types.

Trial registration: NCT05904171 (ClinicalTrials.gov; date registration: 2023-06-06).

Background: This study aimed to investigate the relationship between exercise-induced leg pain, fear of pain, kinesiophobia and injury anxiety in amateur and professional athletes. Secondarily, the present study also aimed to investigate the relationship between women or men athletes and individual or team sports.

Methods: A cross-sectional study was conducted with a total of 304 athletes. Participants were categorized as amateur and professional athletes, male and female athletes, individual and team athletes. Participants were evaluated with Exercise Induced Leg Pain Questionnaire (EILP), Fear of Pain Questionnaire (FOPQ), Sports Injury Anxiety Scale (SIAS), and Tampa Scale of Kinesiophobia (TSK). Parametric tests were used for statistical analysis. A statistical significance level of 0.05 was chosen.

Results: Fear of pain and anxiety about sports injury were significantly less in men (p < 0.05). Loss of social support for sports injury anxiety was less in women (p < 0.05). Anxiety about sports re-injury was less in professional athletes (p < 0.05). Anxiety about letting down important Others and loss of social support were greater in team sports (p < 0.05). Besides, there was a positive, moderate, and significant correlation between the Fear of Pain Questionnaire- III Total and Tampa scale for kinesiophobia (r = 0.411, p < 0.01). Finally, a positive, moderate and significant correlation was found between Sport Injury Anxiety Scale Total and Tampa scale for kinesiophobia (r = 0.579, p < 0.01).

Conclusion: Exercise and movement were associated with psychological parameters related to injury and pain in athletes. Female athletes were found to have more injury anxiety and fear of pain. In addition, amateur athletes have more injury anxiety. Besides, injury anxiety was found to be higher in individuals in team sports. Future studies may further investigate these groups who are more disadvantaged in terms of anxiety, fear of pain and kinesiophobia. In addition, clinicians should pay attention to the criteria for a biopsychosocial approach by choosing appropriate descriptive phrases to avoid exacerbating athletes' anxiety.

Background: The benefits of strength training on shooting accuracy in football players and other athletes are well known, but its effectiveness in improving shooting accuracy among basketball players remains unclear. Therefore, this study aimed to determine the effect of partial range of motion (PROM) and full range of motion (FROM) triceps strength training on stationary three-point shooting test (S3P) among recreational basketball players.

Methods: This was a single-blinded randomized controlled trial. 30 participants were randomly assigned into 3 equal groups; FROM, PROM, and control (CON). Triceps strength training was carried out using an adjustable overhead cable crossover machine. With shoulders over-head flexed to 160-180° for both experimental groups, the FROM group performed strength training from full elbow flexion to full extension. In contrast, the PROM group worked at a restricted range, between 60°-110° elbow flexion/extension. Both groups engaged in 4 sets of 10 repetitions, 2 sessions/week for 4-weeks at 67% of 1 repetition maximum, while the CON group did not participate in any exercise program. S3P was assessed at baseline and at the end of 4-weeks intervention.

Results: Participants mean age (20.20 ± 1.54 years), height (1.74 ± 0.61 m), and body mass index (22.55 ± 3.31) were descriptively analysed. Within group analysis showed a significant improvement of S3P in both FROM (p = 0.0345, 95% CI = -1.50 to -0.07, ES = 0.81) and PROM (p = 0.005, 95% CI = -2.44 to -0.97, ES = 2.40) compared to CON group (p = 0.8995, 95% CI = -0.61 to 0.68, ES = 0.05). Group-by-time interaction demonstrated PROM to be more promising (p = 0.0102, 95% CI = -1.70 to 0.21) than the FROM and CON groups.

Conclusions: PROM triceps strength training improves shooting accuracy and is a time-efficient technique highly recommended for basketball players.

Trial registration: clinicaltrials.gov, NCT04128826, registered on 14/10/2019 - retrospectively, https://clinicaltrials.gov/study/NCT04128826 .

Objective: This study aimed to explore the changing characteristics of running performance before and after extra time matches (ET) at the World Cup under new substitution rules and in special seasonal periods.

Methods: Match running data of starting players who played ET compared to matches before and after the ET matches from the FIFA 2022 World Cup and the FIFA 2023 Women's World Cup were used for the analysis by using repeated-measures ANOVA.

Results: Most of the relative running distance per minute for the ET match was lower than the pre and post ET match in both men and women World Cups. However, no significant differences (p > 0.05) were found between pre and post ET matches neither in men's nor women's World Cups, except total distance and low speed running distance per minute for men`s football (p < 0.05). Significant interaction effects of gender × match (ET/Post-ET) were found in total distance, walking and jogging distance, low speed running distance and high-speed running distance per min (p < 0.05). In contrast, no significant interaction effects were found in moderate speed running distance, sprint distance, number of high-speed running bouts, number of sprints per min and top speed (p > 0.05).

Conclusion: The present findings revealed that players display limited fatigue and can maintain running performance in the match after extra time matches across both genders during World Cups with 4-5 days between matches. Coaches should continue to focus on approaches to reduce fatigue and speeding up athlete recovery after extra time matches in international tournaments.

Background: The study examines how ice and snow sports participation, fitness, perceived social support, and access to winter sports facilities affect health outcomes in China. Understanding winter sports' health benefits is essential for improving public health in colder parts of China, where their popularity is rising.

Methods: A sample of 875 Chinese from various regions was used to examine variable relationships using structural equation modeling (SEM) and route analysis.

Results: Health outcomes, fitness, winter sports facilities, and ice and snow sports participation were positively associated. A significant correlation (β = 0.22, p < 0.001) was established between ice and snow sports participation and physical fitness, highlighting the impact of winter sports on health. Perceived social support for winter sports improves cold weather tolerance (β = 0.27, p < 0.001), emphasizing the role of social networks in resilience. The correlation between physical fitness and access to winter sports facilities (β = 0.31, p < 0.001) highlights the importance of physical talents in winter sports participation. Positive associations between physical fitness (β = 0.25, p < 0.001) and winter sports social support (β = 0.19, p < 0.001) suggest favorable health and well-being impacts. Physical fitness moderates the health benefits of ice and snow sports participation (β = 0.12, p < 0.05), whereas perceived social support for winter sports mediates the effect (β = 0.09, p < 0.05).

Conclusions: The findings emphasize the importance of supporting ice and snow activities and providing infrastructure to promote health. Physical fitness and improved health outcomes on social support can improve winter sports benefits. Public health initiatives may leverage this information to encourage active living and enhance health.

Background: Physical education teachers commonly use single or combined technique tests to assess to assess the skills performance of their students, but these tests still have limitations for ball skills that involve the perceptual-cognitive system and urgently need to adopt ball skill assessment tools based on game scenarios for evaluation.

Objective: To provide a systematic review of ball skills performance assessment tools based on game scenarios, provide references for the development, application and pedagogical reflection of related tools.

Methods: Computer searches of the Web of Science (WOS), PubMed, Scopus, SPORT Discus, and SciELO databases were conducted. Two researchers independently selected documents, and extracted information.

Results: Sixteen tools for the assessment of ball sport skills performance based on game scenarios were obtained. Depending on the item being assessed, the tools can be divided into comprehensive item assessment tools (4) and single item assessment tools (12); depending on the phase of the sport being assessed, the tools can be divided into offensive phase skill performance assessment tools (15) and defensive phase skill performance assessment tools (10); depending on the type of skill being assessed, the tools can be divided into with-ball skill assessment tools (14) and without-ball skill assessment tools (15). The WOS database contains eight of these tools, and the Game Performance Assessment Instrument, Performance Assessment in Team Sports, Sistema de avaliação táctica no Futebol and Game Performance Evaluation Tool have a citation frequency of more than 100 citations and an average annual citation frequency of more than 10 citations. 87.5% and 50.0% of the tools passed inter-observer reliability and intra-observer reliability. 100.0% of the tools passed content validity and 37.5% passed structural validity.

Conclusions: Ball skill assessment tools based on game situations can evaluate students' technical and tactical performance in real game scenarios, reflecting their sports decision-making and awareness of thinking. In practice, ball sport skills performance can be assessed, fed back and improved through four stages of tool selection, observation recording, data analysis and data interpretation, depending on the actual situation. Based on the development ideas of foreign ball skills performance assessment tools, the following insights are proposed: 1) to promote the development and improvement of single ball skills performance assessment tools; 2) to select reasonable and effective tools for assessment according to the teaching progress; 3) to provide suitable assessment tools for the training and selection of reserve talents; 4) to push PE teachers to explore the structured teaching of ball skills.

While regular exercise training is known to decrease oxidative stress (OS) and enhance antioxidant functions in adults, limited data exist on OS responses in the pediatric population. This study aimed to investigate the effects of high-intensity functional training (HIFT) on oxidative stress and physical performance in adolescent soccer players. In this randomized controlled trial, 20 well-trained adolescent soccer players were divided into HIFT (n = 10) and moderate-intensity soccer technical training (MITT, n = 10) groups. Both groups trained for 8 weeks (3 days/week). Oxidative stress biomarkers (MDA, 8-OHDG, H₂O₂, GPx, CAT) and physical performance (VO_2peak, vertical jump height [VJH], maximal explosive power [MEP]) were assessed pre- and post-intervention. Repeated measure mixed ANOVA (2 × 2) with a significance level of P < 0.05 was used to determine differences between and within subjects. The main effect of interaction was significant for VO_2peak, VJH and MEP (P < 0.05). The main effect of interaction was not significant for CAT, 8-OHDG, GPx, H₂O₂ and MDA (P > 0.05). Following intervention, VO_2peak and VJH performance in the HIFT were significantly higher than MITT (P < 0.05). MDA and H₂O₂ in the HIFT decreased significantly (P < 0.05), but no significant changes were observed in the MITT (P > 0.05). CAT activity decreased significantly (P < 0.05), while GPx activity increased significantly (P < 0.05) in both groups. 8-OHDG did not show significant changes in both groups (P > 0.05). Eight weeks of HIFT did not cause greater OS compared to MITT, while could improve physical performance parameters. These findings suggest that HIFT is a viable and time-efficient training strategy for enhancing athletic performance in youth sports. Trial registration: The present study was a randomized controlled trial (registration number: IRCT20190530043762N1, 25/09/2019, Iran).

Background: Individuals with Down syndrome have severe difficulties maintaining proper postural control when standing upright. Therefore, the goal of the present review and meta-analysis was to examine the effects of exercise interventions on improving postural control in individuals with Down syndrome.

Methods: This systematic review was reported following the PRISMA guidelines; while Cochrane guidelines were adopted for methodological guidance. Reports were searched in PubMed, Science Direct, Physiotherapy Evidence Database scale (PEDro), EMBASE, Web of Science (WOS), Scopus and Google Scholar from 2000 to January 2025. Randomized clinical trials and quasi-experimental studies were assessed in English. Review, meta-analysis, and descriptive studies were excluded from the study. Two researchers screened and evaluated data based on PEO criteria and the quality of studies was assessed using the PEDro scale.

Results: Among between 374 studies, Six articles were included in the present review and meta-analysis. Four studies showed that exercise interventions improve postural control in individuals with Down syndrome. However, the results of 2 studies indicated that exercise interventions do not improve postural control in these individuals. Ultimately, after analyzing the studies, the statistical results showed a significant difference between the intervention group and the control group (p = 0.001), indicating the effectiveness of exercise interventions and subsequent improvement in postural control in individuals with Down syndrome. According to PEDro scale, four studies were low quality, and two were high quality. Also, applying GRADE criteria, there is a "Low" certainty of evidence observed. The mean effect size of the exercises in the 6 included studies in the present review was 0.67, indicating a small effect size.

Conclusions: The exercise interventions improve postural control in individuals with Down syndrome. In addition, Due to the small sample size and the small number of studies included, to deal with the risk of bias in the studies, a new randomized controlled trial with a stronger methodology and large sample size comparing exercises and other strategies or different types of exercises is recommended.

Performance analysis can provide coaches with a range of relevant information and support more informed decision-making. The objective of this research was to determine running performance (RP) within five-minute intervals when scoring and conceding goals in the UEFA Champions League (UCL). Matches from the UCL 2020/2021 season were analyzed, and relevant data were retrieved using the InStat Fitness semi-automatic video system. Statistical analysis employed one-way analysis of variance (ANOVA) for comparisons and partial eta squared (η2) to determine effect size. Team performance was determined by measuring total distance covered (TD) and high-intensity running (HIR) when the team scored a goal, conceded a goal, and when the score did not change. Our primary results indicated significant differences in three out of 20 five-minute intervals for the TD parameter and four out of 20 for HIR when teams scored goals. There were also significant differences in eight out of 20 intervals for TD and three out of 20 for HIR when teams conceded goals. In conclusion, significant goal concessions were observed during all the five-minute intervals in which teams substantially reduced their RP. From a practical point of view, coaches should be aware, especially in the context of the pacing strategy used, that team RP affects the scoreline directly and the match outcome indirectly.