基于超出受伤水平的推进动力学对轮椅使用者的自下而上的分类:探索性发现
概括
轮椅推进策略更多地受到身体活动和经验的影响,而不是受伤程度. 促进体育活动和训练可以提高轮椅使用者的流动性和独立性.
科学领域:
- 生物力学 生物力学
- 康复科学 康复科学 康复科学
- 神经科学是一个神经科学.
背景情况:
- 轮椅推进对于轮椅使用者的健康和独立性至关重要.
- 以前的研究往往侧重于受伤程度,忽视了其他影响因素.
- 了解各种推进策略对于有效的康复至关重要.
研究的目的:
- 在脊髓损伤的个体中确定不同的轮椅推进策略.
- 检查推进策略,伤害程度,体力活动和协调之间的关系.
- 探索轮椅推进过程中的神经肌肉控制差异.
主要方法:
- 利用关节动力学的主要组件分析 (PCA) 来聚合28名轮椅使用者.
- 分析了六个上肢肌肉的电肌图 (EMG) 数据,使用非负矩阵因子化计算肌肉协同作用.
- 在人体力计上对最大力度的推进模式进行评估.
主要成果:
- 确定了三个不同的推进集群,主要在体力活动水平和轮椅使用经验方面存在差异.
- 集群1 (高PA,经验丰富的用户) 显示出更高的手速和高效的协调模式.
- 集群3 (低PA) 呈现了保守的模式和显著降低的手速;肌肉协同作用在时间和协调上有所不同.
结论:
- 轮椅推进策略在很大程度上取决于身体活动水平和用户经验,而不仅仅取决于受伤程度.
- 调查结果强调了将体育活动促进和系统训练纳入康复的重要性.
- 加强体力活动和训练可以提高轮椅使用者的移动性,独立性和整体生活质量.
相关概念视频
01:21Rolling Resistance
When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...
01:17Rolling Resistance: Problem Solving
Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
01:24Normal and Tangetial Components: Problem Solving
Consider a man with a mass of 70 kg seated in a chair connected to a pin support through a member BC. If the man maintains an upright position, the task is to determine the horizontal and vertical reactions of the chair on the man when the member makes a 45° angle with the horizontal. At this moment, the man has a speed of 5 m/s, increasing at a rate of 1 m/s².