运动强度对腹部侧侧肌肉的剪切模量的影响,在腹部拉进机动过程中
Kazuyoshi Kozawa1, Gakuto Nakao2, Ginji Nara3
1Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan.
Journal of biomechanics
|July 17, 2025
概括
腹部拉进机动 (ADIM) 是最有效的激活横腹部 (TrA) 和内斜 (IO) 在25-50%的强度. 这一发现有助于优化ADIM的目标肌肉参与.
科学领域:
- 生物力学 生物力学
- 运动生理学 运动生理学
- 肌肉骨成像系统的成像
背景情况:
- 腹部拉入机动 (ADIM) 旨在隔离和增强腹部横向 (TrA) 激活.
- 标准化的ADIM协议和最佳的炼强度还没有得到很好的定义.
- 侧腹肌功能的区域差异可能需要特定区域的强度方法.
研究的目的:
- 为了研究不同强度的运动在ADIM期间对侧腹肌的剪切模量的影响.
- 为了确定选择性激活TRA和斜肌的最佳运动强度.
- 探索TRA,内斜 (IO) 和外斜 (EO) 内的肌肉激活模式的区域差异.
主要方法:
- 20名健康的年轻男性根据腹周长变化进行了5个强度级别的ADIM (0%,25%,50%,75%,100%).
- 剪切波弹性学被用来测量TrA (上,中,下),IO (中,下) 和EO (上,中) 的剪切模量.
- 统计分析发现了不同强度和肌肉区域的剪切模块的显著变化.
主要成果:
- 上部,中部和下部TRA和下部IO的剪切模量逐渐从25%增加到100%的强度 (p <0.05).
- 中IO和上/中EO显示剪切模量从75%到100%强度增加 (p <0.05),但不是在较低强度.
- 观察到TRA和下IO的选择性激活在ADIM强度的25%至50%之间.
结论:
- 选择性TRA和较低IO激活的最佳ADIM强度在25%至50%之间.
- 这种强度范围对于最大化ADIM的神经肌肉益处至关重要.
- 了解区域肌肉反应可以完善ADIM运动处方.
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