在磁共振成像期间姿势状况对大腿肌肉大小的影响
Hiroto Shiotani1, Yusaku Nishino2, Hoshizora Ichinose3,4
1Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan.
Scandinavian journal of medicine & science in sports
|November 15, 2024
概括
腿部肌肉大小的磁共振成像 (MRI) 测量受身体位置的影响. 引力会导致压缩,改变肌肉大小,特别是在像举重运动员这样的大肌肉中.
科学领域:
- 生物医学成像技术 生物医学成像技术
- 人体生理学 人体生理学
- 运动科学 运动科学 运动科学
背景情况:
- 磁共振成像 (MRI) 是肌肉大小评估的标准.
- 在MRI过程中缺少大腿定位的标准化.
- 重力和压缩可以影响大腿肌肉的测量.
研究的目的:
- 为了研究不同姿势条件对大腿肌肉大小的影响.
- 为了量化肌肉大小因压缩和悬浮而发生的变化.
- 确定肌肉大小如何影响与姿势相关的测量变化.
主要方法:
- 在20名举重运动员和20名对照人群中进行了3特斯拉MRI扫描.
- 参与者被扫描在仰卧和倾斜的位置,大腿被压缩和悬挂.
- 测量了15个大腿肌肉的最大解剖截面面积 (ACSAmax) 和肌肉体积.
主要成果:
- 姿势条件显著改变了四头四肢,腿筋和添加器的ACSAmax.
- 在压缩条件下,大腿肌肉总体积下降了 (0.6%-3.8%).
- 肌肉体积的变化因肌肉群而异,在男性举重运动员的大肌肉中更为明显.
结论:
- 腿部肌肉的大小受到MRI期间姿势条件的重大影响.
- 变化的程度取决于肌肉的大小和压缩行为.
- 需要标准化的MRI协议来准确评估大腿肌肉的大小.
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