相关实验视频
Updated: Jul 17, 2025

08:12
Experimental Methods to Study Human Postural Control
Published on: September 11, 2019
9.5K
弹性脚外骨架在意想不到的干扰时会影响索莱斯动力学
James L Williamson1, Glen A Lichtwark2, Taylor J M Dick1
1School of Biomedical Sciences, University of Queensland, St Lucia, Queensland, Australia.
Journal of biomechanics
|September 6, 2023
概括
被动脚外骨架可能会限制腿部肌肉在意外干扰时吸收冲击能量的能力. 这项研究探讨了这些设备如何影响跳跃扰动期间的肌肉活动和筋动力学.
科学领域:
- 生物力学 生物力学
- 可穿戴式机器人技术
- 人类的机动运动.
背景情况:
- 被动脚外骨架旨在模仿生物肌单元功能,如节能和功率放大.
- 这些设备复制肌单元的功率减弱作用的能力仍然未被探索.
研究的目的:
- 研究双边被动脚外骨对神经肌肉控制和肌肉动力学的影响.
- 为了评估在移动过程中遇到的快速,意想不到的垂直扰动时的影响.
主要方法:
- 参与者在带有或没有被动脚外骨架辅助的高架平台上跳跃 (76 Nm rad-1).
- 平台的意外移除引发了垂直扰动.
- 记录了肌肉激活和肌底长度变化.
主要成果:
- 外骨架辅助在扰乱的跳跃过程中降低了肌底肌肉的激活.
- 随着外骨架的使用,观察到增加的带长度变化和肌肉力量的减少.
- 这些变化可能会阻碍系列弹性组织的能量吸收能力.
结论:
- 被动脚外骨架在意外扰动时改变肌肉行为,可能限制功率减弱.
- 了解实时肌行为对于设计适应性可穿戴辅助器件至关重要.
相关概念视频
Muscles of the Leg that Move the Foot and Toes
1.6K
The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles....
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles....
1.6K
Ankle Joint
1.6K
The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
1.6K
Excitation-Contraction Coupling in Skeletal Muscles
8.4K
Excitation-contraction coupling is a series of events that occur between generating an action potential and initiating a muscle contraction. It occurs at the triad, a structure found in skeletal muscle fibers that comprise a T-tubule and terminal cisternae of the sarcoplasmic reticulum on each side. These triads are visible in longitudinally sectioned muscle fibers. They are typically located at the A-I junction — the junction between the A and I bands of the sarcomere.
When an action...
When an action...
8.4K

