Immediate gastrocnemius responses to intermittent cold compression at different pressure levels in soccer players.
完整摘要 · 中文译文
背景：间歇性冷加压（ICC）广泛用于运动后恢复，但足球运动员腓肠肌恢复的最佳压力仍不明确。本研究探讨了不同ICC压力水平对疲劳后腓肠肌恢复的即时效果。 方法：七名男性大学足球运动员（国家二级及以上）参加了一项随机交叉试验。在完成90分钟足球专项疲劳方案后，参与者接受单次20分钟、1°C的ICC干预，压力为低压力（LP，5-15 mmHg）或中等压力（MP，5-50 mmHg），洗脱期为48小时。结局指标包括主观感受（VAS疼痛、Borg CR10疲劳）、运动功能（反向纵跳[CMJ]高度、峰值力、峰值功率、向心做功、力量发展速率[RFD]）、肌肉机械特性（张力、硬度、弹性）和肌肉结构（厚度、羽状角），在干预前后进行评估。 结果：疼痛和RPE评分从干预前到干预后显著下降（p < 0.05），未发现显著的压力或压力×时间效应。CMJ高度（F = 25.94，p = 0.002，η2ₚ = 0.812）、峰值力（F = 11.07，p = 0.016，η2ₚ = 0.649）和峰值功率（F = 13.17，p = 0.011，η2ₚ = 0.687）存在显著的时间效应，均在干预后下降。RFD（F = 6.07，p = 0.049，η2ₚ = 0.503）和腓肠肌外侧头对数衰减率（F = 9.21，p = 0.023，η2ₚ = 0.606）存在显著的压力×时间交互作用。 结论：虽然两种方案均缓解了主观症状， 在RFD和腓肠肌外侧头对数衰减率方面观察到显著的压强×时间交互作用，提示压迫压强可能影响对ICC的急性神经肌肉和力学反应。鉴于样本量较小且RFD在条件内未见显著变化，这些发现应谨慎解读。
完整摘要 · 英文原文
BACKGROUND: Intermittent cold compression (ICC) is widely used for post-exercise recovery, but the optimal pressure for gastrocnemius recovery in soccer players remains unclear. This study investigated the immediate effects of different ICC pressure levels on gastrocnemius recovery after fatigue. METHODS: Seven male collegiate soccer players (national Level 2 or above) participated in a randomized crossover trial. Following a 90-minute soccer-specific fatigue protocol, participants received a single 20-minute, 1°C ICC intervention at either low pressure (LP, 5-15 mmHg) or moderate pressure (MP, 5-50 mmHg), with a 48-hour washout. Outcomes included subjective perceptions (VAS pain, Borg CR10 fatigue), motor function (countermovement jump [CMJ] height, peak force, peak power, concentric work, rate of force development [RFD]), muscle mechanical properties (tone, stiffness, elasticity), and muscle architecture (thickness, pennation angle), assessed pre-and post-intervention. RESULTS: Pain and RPE scores decreased significantly from pre- to post-intervention (p < 0.05), with no significant pressure or pressure × time effects. Significant time effects were found for CMJ height (F = 25.94, p = 0.002, η2ₚ = 0.812), peak force (F = 11.07, p = 0.016, η2ₚ = 0.649), and peak power (F = 13.17, p = 0.011, η2ₚ = 0.687), all declining post-intervention. Significant pressure × time interactions emerged for RFD (F = 6.07, p = 0.049, η2ₚ = 0.503) and lateral gastrocnemius logarithmic decrement (F = 9.21, p = 0.023, η2ₚ = 0.606). CONCLUSIONS: While both regimens alleviated subjective symptoms, significant pressure × time interactions were observed for RFD and lateral gastrocnemius logarithmic decrement, suggesting that compression pressure may influence the acute neuromuscular and mechanical responses to ICC. These findings should be interpreted cautiously given the small sample size and the absence of significant within-condition changes in RFD.
摘要 待译
BACKGROUND: Intermittent cold compression (ICC) is widely used for post-exercise recovery, but the optimal pressure for gastrocnemius recovery in soccer players remains unclear. This study investigated the immediate effects of different ICC pressure levels on gastrocnemius recovery after fatigue. METHODS: Seven male collegiate soccer players (national Level 2 or above) participated in a randomized crossover trial.…