一个新的计算框架,用于估计内部肌肉骨负荷和肌肉适应在低重力状态下
James Cowburn1,2, Gil Serrancolí3, Gaspare Pavei4
1Department for Health, University of Bath, Bath, United Kingdom.
Frontiers in physiology
|February 22, 2024
概括
宇航员在太空中经历肌肉骨变化. 这项研究使用了在模拟引力下单腿跳跃的计算建模,以了解肌肉和关节负荷,告知运动处方.
科学领域:
- 生物力学和运动生理学
- 太空飞行生理学 空间飞行生理学
- 肌肉骨适应 肌肉骨适应
背景情况:
- 太空飞行会导致肌肉骨的显著和多样化的适应.
- 了解肌肉和关节负荷对于有效的宇航员运动处方至关重要.
- 计算肌肉骨建模可以提高太空飞行期间下肢负荷的估计.
研究的目的:
- 为了证明计算肌肉骨建模在估计低重力期间下肢负荷的好处.
- 在模拟的重力条件下单腿跳跃时分析肌肉和关节负荷.
- 通过特征化肌肉骨适应来为宇航员提供运动处方的信息.
主要方法:
- 一名参与者使用体重支系统在模拟的重力条件下 (0.17g至1g) 进行了单腿垂直跳跃.
- 实验动力学,动力学和地面反应力被捕获并使用数据跟踪直接调配模拟框架进行分析.
- 计算的关节时刻,肌肉力 (四肢体) 和关节反应力与肌肉适应模型一起使用.
主要成果:
- 观察到两种不同的负载策略:低重力下关节主导的策略和1g时向Vasti肌肉的转移.
- 关节反应力随着重力而单调地增加,除了部.
- 为了抵消肌肉适应,预测的运动量在较低的重力下显著下降.
结论:
- 计算的肌肉骨建模,结合肌肉适应模型,提供了有价值的见解,在模拟低重力期间负载配置.
- 这种方法可以有效地比较不同练习的肌肉骨负荷.
- 研究结果支持加强宇航员的运动处方,以减轻太空飞行引起的肌肉骨适应.
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