Purpose: This study systematically evaluated the effects of altitude training on athletes’ aerobic capacity, focusing on optimal training modalities and intervention durations. Methods: Eight databases (CNKI, CSPD, PubMed, Ovid Medline, ProQuest, Cochrane Library, Embase, and Scopus) were searched for randomized controlled trials on altitude training and aerobic capacity following PRISMA guidelines, covering publications up to 15 October 2024. The risk of bias was assessed using Cochrane tools, and a meta-analysis was conducted using Review Manager 5.4 with a random-effects model. Sensitivity and subgroup analyses were performed to identify heterogeneity and influencing factors. Results: Thirteen studies involving 276 participants (aged 18–35) were included. Meta-analysis revealed that compared to low-altitude training, altitude training significantly increased hemoglobin (SMD = 0.7, 95% CI: 0.27–1.13, p = 0.03) and hemoglobin mass (SMD = 0.49, 95% CI: 0.1–0.89, p = 0.16) but had no significant effect on maximal oxygen uptake (SMD = −0.13, 95% CI: −1.21–0.96, p = 0.68). Altitude training also improved performance in trial tests (SMD = −28.73, 95% CI: −58.69–1.23, p = 0.002). Sensitivity analysis confirmed the robustness of hemoglobin and trial test results. Subgroup analysis showed that the “live high, train high” (LHTH) approach and interventions lasting longer than three weeks were most effective in enhancing aerobic capacity. Conclusions: Altitude training improves athletes’ aerobic capacity by enhancing hematological indicators and trial test performance, though its impact on maximal oxygen uptake is minimal. LHTH and interventions exceeding three weeks yield superior outcomes. However, the findings are limited by the number and quality of the available studies.

Purpose: Integrated neuromuscular training (INT) is a multidimensional training method that integrates strength, balance, core stability, flexibility, and motor skill development. The aim of this study was to systematically evaluate the effects of INT on various physical performance indicators in athletes to provide evidence supporting the application of INT in training practices. Method: A systematic search was conducted in accordance with PRISMA guidelines across nine databases—including PubMed, Web of Science, EMBASE, Scopus, Cochrane Library, Ovid MEDLINE, WILEY, and Springer Nature Link—from inception to 26 March 2025 to identify randomized controlled trials (RCTs) examining the effects of INT on athletic performance. Result: A total of 19 randomized controlled trials were included, comprising 783 participants aged 11–25 years. The meta-analysis results indicated that INT significantly improved jump performance (SMD = 0.26, 95% CI [0.15, 0.37], p < 0.001, I² = 75%), sprint performance (SMD = −0.76, 95% CI [−0.93, −0.58], p < 0.001, I² = 76%), balance performance (SMD = 0.23, 95% CI [0.14, 0.31], p < 0.001, I² = 78%), and agility performance (SMD = −0.72, 95% CI [−1.23, −0.21], p < 0.05, I² = 74%). Sensitivity analyses revealed no substantial changes in jump, sprint, agility, or balance performance outcomes. Conclusions: INT was found to significantly improve sprint, jump, balance, and agility performance in athletes. Analysis of the included training protocols suggested that improvements in each performance indicator required emphasis on specific training components. Moreover, greater improvements in sprint and balance performance were observed in female athletes compared to their male counterparts. Subgroup analysis revealed significant differences in training effects across populations, with female athletes showing superior improvements in sprint and balance performance following INT interventions. Additionally, interventions lasting fewer than eight weeks, with training sessions shorter than 30 min and frequencies of more than three times per week, were associated with more pronounced effects.

Background: This systematic review and meta-analysis aimed to analyze whether isoinertial flywheel training (FWT) is superior to traditional resistance training (TRT) in enhancing maximal strength and muscle power in healthy individuals. Methods: Electronic searches were conducted in the Web of Science, PubMed, Cochrane Library, SPORTDiscus, and Scopus databases up to 21 April 2024. Outcomes were analyzed as continuous variables using either a random or fixed effects model to calculate the standardized mean difference (SMD) and 95% confidence intervals (CI). Results: A total of sixteen articles, involving 341 subjects, met the inclusion criteria and were included in the statistical analyses. The pooled results indicate no statistically significant differences between FWT and TRT in developing maximal strength in healthy individuals (SMD = 0.24, 95% CI [−0.26, 0.74], p = 0.35). Additionally, the pooled outcomes showed a small-sized effect in muscle power with FWT (SMD = 0.47, 95% CI [0.10, 0.84]), which was significantly higher than that with TRT (p = 0.01) in healthy individuals. Subgroup analysis revealed that when the total number of FWT sessions is between 12 and 18 (1–3 times per week), it significantly improves muscle power (SMD = 0.61, 95% CI [0.12, 1.09]). Significant effects favoring FWT for muscle power were observed in both well-trained (SMD = 0.58, 95% CI [0.04, 1.13]) and untrained individuals (SMD = 1.40, 95% CI [0.23, 2.57]). In terms of exercise, performing flywheel training with squat and lunge exercises significantly enhances muscle power (SMD = 0.43; 95% CI: 0.02–0.84, and p = 0.04). Interestingly, FWT was superior to weight stack resistance training (SMD = 0.61, 95% CI [0.21, 1.00]) in enhancing muscle power, while no significant differences were found compared to barbell free weights training (SMD = 0.36, 95% CI [−0.22, 0.94]). Conclusions: This meta-analysis confirms the superiority of FWT compared to TRT in promoting muscle power in both healthy untrained and well-trained individuals. Squats and lunges for FWT are more suitable for improving lower limb explosive power. It is recommended that coaches and trainers implement FWT for six weeks, 2–3 times per week, with at least a 48 h interval between each session. Although FWT is not superior to free weights training, it is advisable to include FWT in sport periodization to diversify the training stimuli for healthy individuals.

Background: Age-related declines in muscle strength and physical function increase the risk of frailty, falls, and loss of independence in older adults. Traditional structured exercise programs often have low participation because of time constraints, limited access to facilities, and health-related barriers. “Exercise snacking” defined as brief bouts of resistance exercise accumulated across the day, may offer a more flexible and feasible option. Methods: In this 28-day pilot randomized controlled trial, 36 community-dwelling older adults aged 65–80 years were randomly assigned to a home-based “exercise snacking” (ES) group ( n = 18) or a control group ( n = 18). The ES group performed two daily bouts of a five-exercise, chair- and body weight based resistance circuit (~9 min per bout), remotely supervised via smartphone video submission, while controls continued their usual activities. Feasibility was assessed by retention and adherence (completed vs. prescribed sessions), and acceptability by a five-point Likert scale and semi-structured interviews. Physical function outcomes included the Short Physical Performance Battery [SPPB; 4-m walk, five-times sit-to-stand (5-STS), and a balance test], as well as the 60-s sit-to-stand (60 s-STS) and timed up and go (TUG) tests. Two-way repeated-measures analysis of variance and partial η ² was used to explore preliminary intervention effects. Results: Thirty-three participants (ES = 16, control = 17) completed follow-up (retention 88.9%). Among ES completers, mean adherence was 89.1%, with 49.9 ± 3.7 of 56 prescribed sessions completed. Acceptability was high (mean enjoyment 4.3/5), and 88.9% of participants reported intending to continue similar exercises independently. One minor adverse event (plantar fasciitis) and four mild musculoskeletal incidents were recorded, none leading to withdrawal. Compared with controls, the ES group showed significant improvements in SPPB total score, five-STS time, 4-m walk time, TUG time, and 60 s-STS repetitions, all with large effect sizes, while balance scores remained stable in both groups. Conclusion: A remotely delivered, home-based “exercise snacking” program appears feasible, acceptable, and safe for community-dwelling older adults and elicits meaningful short-term improvements in lower-limb strength and endurance, and gait speed. These findings support exercise snacking as a practical, low-burden strategy to counteract functional decline in aging populations and warrant larger, longer-term trials.

This study aimed to evaluate and compare the effects of inertial flywheel training and accentuated eccentric loading training on the neuromuscular performance of well-trained male college sprinters. Fourteen sprinters were recruited and randomly assigned to either the flywheel training (FWT, n = 7) group or the accentuated eccentric loading training (AELT, n = 7) group. The FWT group completed four sets of 2 + 7 repetitions of flywheel squats, whereas the AELT group performed four sets of seven repetitions of barbell squats (concentric/eccentric: 80%/120% 1RM). Both groups underwent an eight-week squat training program, with two sessions per week. A two-way repeated ANOVA analysis was used to find differences between the two groups and between the two testing times (pre-test vs. post-test). The results indicated significant improvements in all measured variables for the FWT group: 1RM (5.0%, ES = 1.28), CMJ (13.3%, ES = 5.42), SJ (6.0%, ES = 2.94), EUR (6.5%, ES = 4.42), SLJ (2.9%, ES = 1.77), and 30 m sprint (−3.4%, ES = −2.80); and for the AELT group: 1RM (6.3%, ES = 2.53), CMJ (7.4%, ES = 3.44), SJ (6.4%, ES = 2.21), SLJ (2.2%, ES = 1.20), and 30 m sprint (−3.0%, ES = −1.84), with the exception of EUR (0.9%, ES = 0.63, p = 0.134), showing no significant difference. In addition, no significant interaction effects between group and time were observed for 1RM back squat, SJ, SLJ, and 30 m sprint (p > 0.05). Conversely, a significant interaction effect between group and time was observed for both CMJ and EUR (p < 0.001); post hoc analysis revealed that the improvements in CMJ and EUR were significantly greater in the FWT group compared to the AELT group (p < 0.001). These findings indicate that both FWT and AELT are effective at enhancing lower-body strength, power, and speed in well-trained male college sprinters, with FWT being particularly more effective in promoting elastic energy storage and the full utilization of the stretch–shortening cycle.

In this cross-sectional investigation, we aimed to compare impulse-derived (iDSI) and forcederived (fDSI) dynamic strength indices to determine their consistency in guiding individualized training recommendations. It also assessed the agreement between training prescriptions based on these...