神经肌肉植物 flexor 短跑者的表现与身体活跃的个体相比
Evan D Crotty1, Laura-Anne M Furlong, Andrew J Harrison
1Sport and Human Performance Research Centre, University of Limerick, Limerick, IRELAND.
Medicine and science in sports and exercise
|September 18, 2023
概括
与身体活跃的个人相比,短跑者表现出更高的爆炸性脚部曲器性能,特别是在早期的肌肉收缩阶段. 这种增强的神经肌肉功能与冲刺训练有关,而不是肌肉大小或性.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 人体生理学 人体生理学
背景情况:
- 了解运动员类型之间的神经肌肉性能差异可以揭示体内变异性和潜在机制的洞察力.
- 比较短跑者和身体活跃的个体有助于评估脚部 flexors爆炸力产生的差异.
研究的目的:
- 为了比较短跑者和身体活跃的个体之间的足部 flexors的神经肌肉功能.
- 评估爆炸力性能的差异,特别是扭矩发展速度 (RTD).
主要方法:
- 在冲刺者和身体活动的个体中,在各种肌单位 (MTU) 长度的同位体足曲过程中评估神经肌肉性能.
- 以50毫秒的间隔测量脚部屈曲RTD,并计算肌肉激活同步性.
- 评估肌肉大小和MTU度,使用中部胃半的超声波.
主要成果:
- 在不同的MTU长度中,短跑者表现出明显更大的非自愿和自愿RTD,特别是在早期收缩阶段 (0-100 ms).
- 短跑者表现出更同步的胃肌肉激活.
- 两组之间在中部胃肌的大小或MTU度方面没有发现显著差异.
结论:
- 冲刺特定训练可以提高脚下 flexor 的爆炸性性能,特别是在收缩的早期阶段.
- 在短跑者中,提高爆炸扭矩的产生很可能归因于训练适应,而不是肌肉大小或度的差异.
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