单边的高负荷阻力训练会影响承受低负荷训练的对手臂的力量变化
Zachary W Bell1, Vickie Wong2, Robert W Spitz2
1Department of Kinesiology and Physical Education, McGill University, Canada.
Journal of science and medicine in sport
|July 9, 2023
概括
一只手臂的高负荷训练没有影响对手臂的肌肉大小. 然而,在未经训练的手臂中观察到强度增加,这表明对强度的实体内研究设计存在潜在问题.
科学领域:
- 运动生理学 运动生理学
- 体育科学 运动科学 运动科学
- 肌肉生理学 肌肉生理学
背景情况:
- 在运动研究中经常使用学科内部培训模型.
- 单边高负荷训练对对边缘肢体肌肉大小和力量的影响仍然不清楚.
研究的目的:
- 调查一只手臂高负荷训练是否会影响与低负荷训练的对手臂的肌肉大小和力量.
- 为了比较单边高负荷训练与双边训练协议对肌肉适应的影响.
主要方法:
- 116名参与者被随机分配到三个组,进行6周的肘部曲炼.
- 第1组:主导臂高负荷 (8-12 RM). 第二组:主导臂高负荷,非主导臂低负荷 (30-40 RM). 第三组:非主导的手臂只有低负荷.
- 干预前后测量肌肉厚度和一次重复的最大值 (1RM).
主要成果:
- 第1组的未训练手臂和第2组的低负荷手臂显示出较大的强度增加 (分别为1.5公斤和1.1公斤),与第3组的低负荷单独手臂 (0.3公斤) 相比.
- 肌肉厚度仅在直接训练的手臂中增加 (约0.25厘米).
- 在对侧 (未训练) 臂没有观察到显著的肌肉厚度变化.
结论:
- 在学科内部的设计可能会因为潜在的跨学科影响而混强度结果指标.
- 一个肢体的高负荷训练似乎不会损害对侧肢体的肌肉缩.
- 在未经训练的肢体中,力量适应甚至可以发生在对侧高负荷训练中,这质疑了某些主体内比较的有效性.
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