急性热水浸泡对年轻健康成人力稳定性和运动单元放电率变异性的影响。

Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme Pub Date : 2025-01-01 DOI:10.1139/apnm-2024-0330

Patrick Rodrigues, Lucas B R Orssatto, Gabriel S Trajano, Lee Wharton, Geoffrey M Minett

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引用次数: 0

摘要

本研究考察了热水浸泡后核心和肌肉温度对力量稳定性和运动单元放电率（MUDR）变异性的影响。15名参与者(6名女性；25±6岁)完成42°C（热）或36°C（对照）水浸泡前后的神经肌肉评估。测量膝关节伸展时的力稳定性，同时记录股外侧肌和内侧肌的HD-sEMG信号，用于MUDR变异性分析。水浸泡后，力稳定性下降0.11% (p d = 0.38)， MUDR变异性增加1.25% (p d = 0.57)，这可能是由肌肉温度升高引起的。核心温度升高并没有进一步影响这些变化。

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The effects of acute hot-water immersion on force steadiness and motor unit discharge rate variability in young, healthy adults.

This study examined the effects of core and muscle temperature on force steadiness and motor unit discharge rate (MUDR) variability after a hot-water immersion session. Fifteen participants (6 women; 25 ± 6 years) completed neuromuscular assessments before and after either 42 °C (hot) or 36 °C (control) water immersion. Force steadiness was measured during knee extension, while HD-sEMG signals were recorded from vastus lateralis and medialis for MUDR variability analysis. Following water immersion, force steadiness decreased by 0.11% (p < 0.05; d = 0.38) and MUDR variability increased by 1.25% (p < 0.01; d = 0.57) potentially driven by increased muscle temperature. Elevated core temperature did not further affected these changes.

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Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme

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