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相关概念视频

Cross-bridge Cycle01:26

Cross-bridge Cycle

As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.

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相关实验视频

Updated: Jun 15, 2026

The Impact of Motor Task Conditions on Goal-Directed Arm Reaching Kinematics and Trunk Compensation in Chronic Stroke Survivors
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在使用外骨架进行高空钻井任务时的性别差异 - 一个横截面研究

Bettina Wollesen1,2, Julia Gräf1, Sander De Bock3

  • 1Department of Human Movement Science, Universität Hamburg, 20148 Hamburg, Germany.

Biomimetics (Basel, Switzerland)
|October 25, 2024
PubMed
概括

上半身外骨对头部任务的表现的影响在性别之间有所不同. 虽然男性对外骨的准能力有所提高,但女性的准能力有所下降,这表明身体成分是外骨有效性的关键.

关键词:
性别比较性别比较超越肩膀的工作任务的工作任务.支持系统 支持系统

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Last Updated: Jun 15, 2026

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科学领域:

  • 人体工程学和人类因素
  • 职业健康和安全问题 职业健康和安全问题
  • 生物力学 生物力学

背景情况:

  • 身体上部外骨显示出对空中任务的承诺.
  • 对于外骨使用对性别特异性影响的理解有限.

研究的目的:

  • 为了比较男性和女性之间的性能,应变和舒适性,使用上肢外骨架.
  • 调查在有或没有外骨辅助的情况下执行空头任务的性别差异.

主要方法:

  • 一项随机交叉研究涉及36名参与者 (20名女性,16名男性) 进行空中钻探.
  • 任务绩效指标,感知到的劳动力和易用性都被评估,并没有被动外骨架.
  • 分析包括性别比较,相互作用效应和身体质量指数 (BMI) 作为共同变量.

主要成果:

  • 在错误积分中观察到显著的性别差异 (p < 0.001),男性的错误较高.
  • 一个显著的相互作用效应 (性别 x 外骨架使用) 显示,女性的准性能随着外骨架的使用而下降,而男性的目标性能得到改善 (p = 0.025).

结论:

  • 对空头任务的外骨性能的性别差异不如预期那么明显.
  • 在预测外骨有效性方面,人体构成和人体测量似乎比单独的性别更为关键.
  • 未来的研究应该探索肌肉活动,以了解性别特定的运动控制模式.