The influence of speed and grade on wheelchair propulsion hand pattern.
The influence of speed and grade on wheelchair propulsion hand pattern.
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DOI：
10.1016/j.clinbiomech.2015.07.007
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发表时间：
2015-11
期刊：
影响因子：
--
通讯作者：
Neptune RR
中科院分区：
文献类型：
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作者：
Slowik JS;Requejo PS;Mulroy SJ;Neptune RR
手动轮椅推进过程中使用的手型（即，全循环手路径）可以提供对个人推进技术的洞察。然而，以前的手模式的分析一直局限于一个单一的推进条件和依赖主观定性表征方法的重点。本研究的目的是开发一套客观的定量参数来表征手的模式，并确定的影响，推进速度和倾斜度的手动轮椅使用者的首选模式。运动学和动力学数据收集170经验丰富的手动轮椅使用者在测力计在三个条件：水平推进在他们自己选择的速度，水平推进在他们最快的舒适速度，和分级推进（8%）在他们的水平自选速度。使用一组客观参数对手型进行量化，并确定了不同条件下的差异。推进速度的增加导致了从轮辋下的手模式的转变。倾斜度的增加导致手在整个循环中保持在扶手附近。手动轮椅使用者根据特定任务的限制和目标改变他们的手型。需要进一步的工作来研究手型之间的差异如何影响上肢需求，并可能导致过度使用损伤和疼痛的发展。
The hand pattern used during manual wheelchair propulsion (i.e., full-cycle hand path) can provide insight into an individual's propulsion technique. However, previous analyses of hand patterns have been limited by their focus on a single propulsion condition and reliance on subjective qualitative characterization methods. The purpose of this study was to develop a set of objective quantitative parameters to characterize hand patterns and determine the influence of propulsion speed and grade of incline on the patterns preferred by manual wheelchair users. Kinematic and kinetic data were collected from 170 experienced manual wheelchair users on an ergometer during three conditions: level propulsion at their self-selected speed, level propulsion at their fastest comfortable speed, and graded propulsion (8%) at their level self-selected speed. Hand patterns were quantified using a set of objective parameters and differences across conditions were identified. Increased propulsion speed resulted in a shift away from under-rim hand patterns. Increased grade of incline resulted in the hand remaining near the handrim throughout the cycle. Manual wheelchair users change their hand pattern based on task-specific constraints and goals. Further work is needed to investigate how differences between hand patterns influence upper extremity demand and potentially lead to the development of overuse injuries and pain.