This randomized controlled trial investigated the acute effects of floss band (FB) application at different pressures on multidimensional ankle stability in patients with chronic ankle instability (CAI). Forty-two male participants with CAI were randomly assigned to a medium-pressure (MP, 150 mmHg), high-pressure (HP, 200 mmHg), or control group (CG, non-compressive bandage). Outcomes included the Y-Balance Test (YBT), single-leg landing stability (assessed via surface electromyography), ankle proprioception, and static balance, measured at baseline (T0), 5 min (T1), 25 min (T2), and 45 min (T3) post-intervention. The results showed that both MP and HP groups exhibited significant improvements in YBT composite scores, lower limb muscle activation during landing, and joint position sense accuracy at T1 and T2 compared to T0 (all p < 0.05), with the MP group demonstrating longer-lasting benefits up to T3. The MP group also significantly outperformed the CG across multiple dynamic stability and neuromuscular metrics at early time points (p < 0.05). Improvements in static balance were limited and transient. These findings indicate that a single application of FB, particularly at 150 mmHg, can acutely enhance dynamic stability, neuromuscular control, and proprioception in CAI patients, with effects sustained for up to 45 minutes, supporting its use as an effective pre-activity or pre-rehabilitation intervention.

Objective: To explore the effects of different physical training programs on the sleep of boy students in a senior high school, and to provide a reference for effectively improving the sleep level of students in a senior high school, as well as optimizing the physical training program.Methods: 77 boys in 11th grade of a senior high school were randomly divided into four groups: Group I (traditional training), Group II (strength training), Group III (HIIT training), and Group IV (strength +HIIT training). At the points before and after the intervention, the Pittsburgh Sleep Quality Index (PSQI) and examination scores were measured as indicators of the sleep health and academic performance of students in senior high school, and the intervention effects of different schemes were compared.Results: (1) After the intervention, the PSQI global score of Group II, Group III, and Group IV was significantly lower than that of Group I (p < 0.001, p = 0.004, p = 0.01, respectively), and the PSQI global score (p < 0.001, p = 0.02, p < 0.001, respectively), sleep latency (p = 0.008, p = 0.003, p = 0.005, respectively) and sleep duration (p < 0.001, p = 0.005, p = 0.003, respectively) were significantly lower than those before intervention; (2) After intervention, the score of sleep disturbances of Group IV was significantly lower than that before intervention (p = 0.02); (3) After the intervention, academic performance among the four groups show no significance (p = 0.886 > 0.05), while Group IV was significantly higher than that before intervention (p = 0.047).Conclusion: Compared with traditional training programs, strength training, HIIT and strength+HIIT training programs have a stabilizing and improving effect on the sleep health level of senior high school boy students, mainly reflected by reducing sleep latency and increasing sleep duration. All four training programs can improve academic performance, while the strength+HIIT training program produced a more significant effect.

Inspiratory muscle training (IMT) is widely implemented among athletes and patients, but its effects in sedentary adolescent students remain unclear. This randomized controlled trial investigated the effects of 12-week IMT on respiratory function and aerobic capacity in sedentary adolescent boys. For this aim, 41 sedentary male-adolescents (16–18 years) were assigned randomly into IMT (n = 20) or Sham (n = 21) group. IMT was performed 3 days/week, 3 sets of 30 repetitions daily over 12 weeks. The forced vital capacity (FVC), maximal inspiratory pressure (MIP), peak inspiratory flow (PIF), forced inspiratory volume (FIV), maximum expiratory pressure (MEP), estimated maximal oxygen uptake (VO_2max), running distance, maximal heart rate and heart rate recovery at 1/3/5 minute (HRR1/3/5) were assessed before and after intervention. Two-way mixed ANOVA or generalized estimating equations was conducted to analyze group×time interactions. Significant group×time interactions were observed for all respiratory function parameters and for VO₂max, running distance, and HRR1 (P < 0.05). Post-intervention, the IMT group showed significantly higher MIP, PIF, FIV, VO₂max, running distance, and HRR1 compared to the Sham group (P < 0.05). The augmentation value was also substantially greater in the IMT group across all outcomes (P < 0.05). These findings suggest 12-week IMT effectively enhances respiratory function and aerobic endurance in sedentary adolescent males. This trial was registered at the Chinese Clinical Trial Registry (Registration ID ChiCTR2600117069, 3/12/2025).