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首页> 外文期刊>Gait & posture >Comparison of utilized coefficient of friction during different walking tasks in persons with and without a disability.
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Comparison of utilized coefficient of friction during different walking tasks in persons with and without a disability.

机译：残障人士和非残障人士在不同步行任务中使用的摩擦系数的比较。

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The purpose of this study was to determine if older persons with a disability have greater utilized coefficient of friction requirements than healthy older and younger adults during various walking conditions. Forty-eight community-dwelling adults were divided into five groups based on medical diagnosis and age: CVA (unilateral stroke; mean age 63 years), DM (diabetes mellitus; mean age 70 years), ARTH (lower extremity arthritis; mean age 69 years), SENIOR (healthy; mean age 73 years), and YOUNG (healthy; mean age 29 years). Ground reaction forces (GRF) were recorded as subjects walked across a walkway, ascended and descended stairs, and negotiated a turn. The utilized coefficient of friction (COF(U)) throughout stance was calculated as the ratio of shear to vertical GRFs, and the peak COF(U) resulting from a shear force that would contribute to a forward foot slip was identified. Separate one-way ANOVAs were used to identify differences in peak COF(U) across subject groups for each walking task. The results of this study found that for all conditions evaluated, those with a disability did not demonstrate greater friction requirements then adults without a disability. Friction requirements for the YOUNG group were significantly greater than all disability groups while negotiating a turn, and were greater than the DM group during level walking. These results indicated that the diagnostic groups evaluated in this study are not at any greater risk for slip initiation than the healthy older or younger adults during the tasks evaluated.
机译：这项研究的目的是确定在各种步行条件下，老年人是否比健康的老年人和年轻人具有更大的利用摩擦系数要求。根据医学诊断和年龄，将48位居住在社区中的成年人分为五组：CVA（单侧中风;平均年龄63岁），DM（糖尿病;平均年龄70岁），ARTH（下肢关节炎;平均年龄69岁）岁（健康;平均年龄73岁）和青年（健康;平均年龄29岁）。记录地面反作用力（GRF），当受试者走过人行道，爬升和下降楼梯并协商转弯时。整个姿势中利用的摩擦系数（COF（U））计算为剪切力与垂直GRF的比率，并确定了由剪切力产生的峰值COF（U），该剪切力会导致向前的脚部打滑。对于每个步行任务，使用单独的单向方差分析来确定受试者组之间峰值COF（U）的差异。这项研究的结果发现，对于所有评估的条件，与没有残疾的成年人相比，那些残疾的人没有表现出更大的摩擦要求。在进行转弯时，YOUNG组的摩擦要求显着高于所有残疾组，并且在水平行走过程中也高于DM组。这些结果表明，在本研究中评估的诊断组在评估任务期间没有比健康的老年人或年轻人更大的滑倒风险。

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