相关实验视频
Updated: Mar 9, 2026
08:12
Experimental Methods to Study Human Postural Control
Published on: September 11, 2019
10.2K
实验量化平衡使用整体稳定区域从姿势摇摆练习的实验量化平衡
Kübra Akbaş1, Neethan Ratnakumar1, Rachel Jones2
1Department of Biomedical Engineering, New Jersey Institute of Technology, 323 Dr Martin Luther King Jr Blvd, Newark, NJ, 07102, USA.
Biomedical engineering online
|March 7, 2026
概括
本研究引入了一种新方法,使用基于质量中心 (COM) 的平衡区域 (BR) 来量化动态任务期间的人类平衡. 这种方法比传统方法提供了更个性化和更全面的评估,有助于评估跌倒风险.
科学领域:
- 生物力学 生物力学
- 人类运动科学科学 人类运动科学
- 康复工程 康复工程 康复工程
背景情况:
- 有效的平衡评估对于那些有跌倒风险的人来说至关重要.
- 当前的临床方法往往缺乏精确的姿势控制评估所需的动态和全身视角.
- 现有的指标,如压力中心 (COP) 和倒置摆形模型,对整体平衡能力的洞察力有限.
研究的目的:
- 开发和验证一种新的实验框架,用于使用基于质量中心 (COM) 的平衡区域 (BRs) 来量化人类平衡.
- 为了将基于COM的BR与传统的指标和线性反转 (LIP) 模型进行比较.
- 为了研究在动态姿势任务中平衡控制中的性别差异.
主要方法:
- 使用基于COM的BRs开发了一个新的框架,该BRs来自22名健康成年人的大型姿势摇摆任务.
- 参与者在力量板上站立时进行了自愿,支持和扰乱的前后 (AP) 摆动,并进行了全身运动捕捉.
- 从OpenSim肌肉骨模型中获得了个性化的COM轨迹,以构建BR并计算关键指标,如稳定性边际 (MoS) 和外推COM (XcoM) 范围.
主要成果:
- COM轨迹一般保持在基于LIP的分析界限内,BRs有效地捕获了个性化的余额包裹.
- 在最大后部MoS,XcoM范围和BR区域发现了显著的性别差异.
- COP指标和关节动力学显示了不同任务的显著差异,以及在扰动波动期间COP范围的显著性别差异.
结论:
- 成功开发了一种基于COM的新型实验框架,用于使用动态姿势任务进行平衡评估.
- 余额区域 (BRs) 提供了一个量化,个性化的衡量余额能力,超过了传统指标.
- 这一框架对跌倒风险评估,平衡训练以及使用先进的运动捕捉技术将其整合到临床环境中充满希望.
相关概念视频
00:49Rigid Body Equilibrium Problems - I
5.6K
A rigid body is said to be in static equilibrium when the net force and the net torque acting on the system is equal to zero. To solve for rigid body equilibrium problems, do the following steps.
5.6K
01:21Rigid Body Equilibrium Problems - II
8.1K
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
8.1K
01:15Equilibrium and Balance
7.5K
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
7.5K