应对自由重背的最低速度值:不同次最大负载方案的可靠性和有效性
Goncalo V Mendonca1,2, Diogo L Alves3, Afonso Fitas3,4
1Neuromuscular Research Lab, Faculdade de Motricidade Humana, Universidade de Lisboa, Estrada da Costa, Cruz Quebrada, 1499-002, Dafundo, Portugal. gvmendonca@gmail.com.
European journal of applied physiology
|May 10, 2024
概括
在设置失效时的平均同心速度 (MCV) 在背 squats 期间在代谢和机械负荷协议之间有所不同. 在亚最大负载下故障时的MCV不能可靠地估计一次重复的最大MCV.
科学领域:
- 运动生理学 运动生理学
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
背景情况:
- 平均同心速度 (MCV) 是抵抗运动期间神经肌肉疲劳的关键指标.
- 了解在设置失败时的MCV与最大强度 (一次重复最大,1RM) 之间的关系对于训练处方至关重要.
- 不同的加载协议可能会影响生理需求和随后的MCV反应.
研究的目的:
- 为了比较终端MCV在设置失败时,自由重量背协议之间强调代谢积累与机械负荷.
- 在这些不同的负载条件下,评估终端MCV在设置之间和日间的可靠性.
主要方法:
- 15名健康的男性 (18-30岁) 与相对强度≥1.5倍的体重参与.
- 在一次重复的最大 (1RM) 测试和两个次最大方案中测量了MCV:代谢强调 (3组40%的RM1与血液流量限制) 和机械强调 (3组80%的RM1没有血液流量限制).
- 参与者在每次重复中都以最大预期的同心速度为目标,直到肌肉衰竭.
主要成果:
- 与机械方案相比,在代谢方案中的MCV更快时发生了设置失败 (p < 0.05).
- 代谢负载方案在故障时显示了MCV的更高可靠性.
- 虽然代谢协议失败MCV超过1RM MCV,但机械协议失败MCV与1RM MCV相似,在从机械失败MCV估计1RM MCV时存在很大的错误.
结论:
- 设置失效时的终端MCV是特定于运动协议所施加的生理要求.
- 由于协议的特殊性,不建议使用在亚最大负载下设置故障的MCV数据来估计一次重复的最大MCV.
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