诊断性超声波显示直肠腹部部分的优先激活,有针对上部和下部的炼
Aaron P Gomirato1, Sylvain G Grenier1
1School of Kinesiology and Health Sciences, Laurentian University, Sudbury, ON, CANADA.
International journal of exercise science
|January 30, 2024
概括
腹部挤压运动最有效地激活直腹肌的肌肉部分,显示较坐姿和腿部抬起相比,肌肉变厚更大. 这表明运动特定的招募模式会影响腹肌的参与.
科学领域:
- 运动生理学 运动生理学
- 生物力学 生物力学
- 人体解剖学 解剖学 解剖学
背景情况:
- 选择性激活直肠腹部段在腹部炼,如挤压和腿部提升是一个正在进行的辩论的话题.
- 了解差异性肌肉激活对于优化训练计划和预防伤害至关重要.
研究的目的:
- 为了研究和比较各种腹部运动期间直肠腹部肌肉部分的激活模式.
- 为了确定特定的练习是否会在直肠腹部内引起优先招募.
主要方法:
- 采用随机独立测量设计,使用电肌图 (EMG) 和诊断超声波.
- 15名参与者进行了45度缩,90度坐姿和90度腿部抬起.
- 在每次运动期间,M模式超声波记录了直肠腹部厚度在所有四个单边段的变化.
主要成果:
- 在腹部肌肉部分和运动类型之间发现了显著的相互作用 (F{6,440) = 4.718,p < .01, η2 = .065).
- 腹部缩导致直肠腹部显著加厚 (36.39 ± 3.21%) 与腿部提升相比 (p < .01).
- 坐也显示出比抬腿更大的加厚 (32.49 ± 3.04%) ,在炼过程中观察到的肌肉缩短和加厚最为明显.
结论:
- 腹直肌的肌肉招募是依赖于运动的,偏向于更接近施加负荷的细分.
- 腹部似乎是最有效的练习在那些被测试的引发显著的直肠腹部激活和加厚.
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