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相关概念视频

Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

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Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
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Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.
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Skeletal muscles, the key players in our body's movement, can be classified into two groups based on their location and function: axial muscles and appendicular muscles. These classifications reflect the primary roles the muscles play in the body's structure and movement.
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跨辐射纵向压缩是否影响肌电控制?

J Olsen1, S Day2, S Dupan3

  • 1Intelligent Sensing Laboratory, School of Engineering, Newcastle University, UK.

Canadian prosthetics & orthotics journal
|August 24, 2023
PubMed
概括
此摘要是机器生成的。

纵向压缩插座不会影响单通道肌电控制或疲劳. 然而,它们可以通过在肌肉收缩期间保持一致的压力来增强多通道EMG控制.

关键词:
截肢是一种截肢.压缩 压缩是一种压缩.压缩释放方式 (Compression-Release) 是一种压缩释放方式.控制 控制 控制 控制 控制在EMGEMGEMGEMGEMGEMGEMGEMGEMGEM疲劳 疲劳 疲劳 疲劳 疲劳微电动的 微电动假肢是一种假体.插座 插座 插座 插座超辐射的 超辐射的上肢-上肢是什么意思

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科学领域:

  • 生物医学工程 生物医学工程
  • 假肢和整形手术
  • 康复技术 康复技术 康复技术

背景情况:

  • 目前的跨辐射假肢插座并没有为肌电控制进行优化.
  • 改进的插座设计,如纵向压缩插座,提供增强的生物力学稳定性.
  • 肢体稳定对肌电控制的影响仍未得到充分研究.

研究的目的:

  • 为了评估纵向压缩插座配置对肌电控制的影响.
  • 评估压缩对假肢使用期间肌肉压力和疲劳的影响.

主要方法:

  • 十二名身体健康的参与者测试了纵向压缩插座模拟器在压缩,缓解和未压缩状态.
  • 参与者执行了单通道肌电目标追踪和高强度抓取任务.
  • 在各种配置中评估了跟踪精度,压力分布和四肢疲劳率.

主要成果:

  • 在压缩配置之间没有发现跟踪精度或疲劳率的显著差异.
  • 压缩配置在肌肉收缩过程中成功地维持了口对面的压力.

结论:

  • 纵向压缩不会阻碍单通道EMG控制或改善疲劳抵抗力.
  • 纵向压缩插座通过确保肌肉激活期间保持一致的压力来提高多通道EMG控制可靠性.