抗力运动对心脏干扰和心性能的影响:一个交叉随机试验,比较体积和技术
Rasoul Dokht Abdiyan1, Anita Sadeghpour2, Azin Alizadehasl2
1Department of Exercise Physiology, School of Physical Education and Sport Sciences, University of Tehran, Tehran, Iran.
阻力运动会导致暂时的心脏变化,重复最大值更高,训练到失败,导致对心脏结构和功能的体积依赖性影响更大,直到运动后6小时.
科学领域:
- 心血管生理学心血管生理学
- 运动科学 运动科学
- 运动医学 运动医学
背景情况:
- 众所周知,阻力运动 (RE) 会引起暂时的心脏干扰.
- 了解这些变化的程度和时间过程对于运动处方和心脏健康监测至关重要.
- 不同的重复最大值 (RM) 和训练方案 (设置到失败与非失败) 对这些心脏反应的影响需要进一步调查.
研究的目的:
- 为了研究不同抵抗运动技术引起的暂时心脏干扰的幅度和时间.
- 为了比较8-10个RM与15个RM协议对心脏功能和结构的影响,有或没有失败,对心脏功能和结构的影响.
主要方法:
- 24名参与者根据RM (8-10或15) 和训练强度 (失败或不失败) 分为四组.
- 心声和血压 (BP) 数据在基线和运动后30分钟,6小时和24小时收集.
- 评估的关键参数包括末缩周围壁应力 (cESS),传导入流速度 (E/A),后壁厚度 (PWT),全球应力 (GCS,GLS),中风体积 (SV),射出分数 (EF),左心室 (LV) 质量,心室间隔膜厚度 (IVST) 和左心房 (LA) 区域.
主要成果:
- 所有组均显示运动后6小时内,cESS和E/A比率下降,PWT,GCS,GCSR,GLSR和SV增加.
- 与8-10个RM组相比,15个RM组显著增加了LV质量和IVST,并减少了LA面积 (p <0.05).
- 在15个RM组中,RE导致全球纵向应变 (GLS) 降低,射出分数 (EF) 增加 (p < 0.01).
结论:
- 抵抗运动后的过渡性心脏干扰是依赖体积的,并受到训练到失败的影响.
- 与较低的RM (8-10RM) 相比,更高的重复最大值 (15RM) 诱导了心脏结构 (LV质量,IVST,LA区域) 的更显著变化.
- 阻力运动,特别是体积较高的阻力运动,可以增加GCS和减少后负载,有助于保持冲击体积和弹射率.
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