肌肉负荷,舒适度,可用性和任务时间在3个轮椅手柄方向和地面类型之间进行比较:一个随机交叉研究
Yen-Hui Lin1,2, Chien-Chun Chang3, Victor Ei-Wen Lo4
1Department of Occupational Safety and Health, Chung Shan Medical University, Taichung, Taiwan.
概括
平行轮椅手柄会增加上肢的压力和不适,尤其是在坡道上. 垂直手柄减少肌肉负荷,但损害可用性,而侧面手柄为人体工程学轮椅推进提供平衡.
科学领域:
- 生物力学 生物力学
- 人类因素工程 人类因素工程
- 康复工程 康复工程
背景情况:
- 轮椅推进涉及重要的上肢生物机械应力.
- 优化手柄设计对于护理人员的舒适性和效率至关重要.
- 整合生理和可用性数据提供了全面的性能评估.
研究的目的:
- 为了比较肌肉负荷,舒适度,可用性和任务完成时间在平行,垂直和横向轮椅手柄方向.
- 调查不同地形类型对这些参数的影响.
- 为了评估手柄设计和表面在轮椅推进性能上的综合影响.
主要方法:
- 随机交叉研究与28名健康成年人模拟轮椅推.
- 测量了主要上肢肌肉 (ECR,FCU,BB) 的电肌图 (EMG) 活动.
- 主观测量包括Borg CR-10的不适度和系统可用性尺度 (SUS) 的可用性.
主要成果:
- 手柄的方向和地面类型显著影响了肌肉激活 (P<0.05).
- 平行手柄导致较高的肌肉负荷和不适,特别是在坡道上.
- 垂直手柄降低了前臂肌肉负荷,但降低了可用性得分 (SUS) 和增加了复杂路径上的任务时间.
结论:
- 平行手柄增加了轮椅推手的生物机械需求和不适,特别是在斜坡上.
- 垂直手柄可以减少肌肉负荷,但会损害可用性和机动性.
- 侧面手柄提供了一个平衡的方法,适度的肌肉激活和改进的转向控制,支持人体工程学设计原则.
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