方程的交叉验证,以估计1次重复的最大值,从重复到失败,用于长椅压力和腿部延伸
Trevor D Roberts1, Robert W Smith2, Jocelyn E Arnett1
1Exercise Physiology Laboratory, Department of Nutrition and Health Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska; and.
Journal of strength and conditioning research
|November 4, 2024
概括
这项研究交叉验证的方程估计一个重复最大 (1RM) 从重复到故障 (RTF) 对于长椅压力和腿部延伸. 在这些练习中,修改后的方程显示了预测1RM的更高准确性.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
背景情况:
- 估计一个重复最大 (1RM) 对于设计抵抗训练计划至关重要.
- 预测1RM从重复到故障 (RTF) 的以前方程的准确性各不相同.
- 交叉验证是必要的,以评估现有的1RM估计方程的适用性.
研究的目的:
- 进行交叉验证18个先前发表的方程,用于从RTF估计1RM.
- 评估通用方程,板压方程和腿部延伸方程的准确性.
- 修改和重新验证最准确的方程,以改善1RM估计.
主要方法:
- 四十三名休活动的男性进行了1RM测试,并在1RM的80%进行了RTF,用于腿部延伸和长椅压力.
- 通过使用包括常量误差,相关性和总误差在内的标准,对现有的18个方程进行了交叉验证.
- 准确的方程通过减去它们的恒定误差而被修改并重新验证.
主要成果:
- 交叉验证显示,对于长椅压力和腿部延伸的18个方程,准确性各不相同.
- 修改后的方程通过减少系统错误,提高了估计1RM的准确性.
- 板压的推方程:1RM = (RTF^0.1 ×重量) +1.49;用于腿部延伸: 1RM = (RTF^0.1 ×重量) +1.06.
结论:
- 现有的1RM估计方程需要对特定移动进行交叉验证.
- 修改后的方程提供了更准确的预测板压和腿部延伸1RM.
- 推的方程适用于引起4-10 RTF的权重.
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