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首页> 外文期刊>Journal of Rehabilitation Research and Development >Comparison of peak shoulder and elbow mechanical loads during weight-relief lifts and sitting pivot transfers among manual wheelchair users with spinal cord injury
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Comparison of peak shoulder and elbow mechanical loads during weight-relief lifts and sitting pivot transfers among manual wheelchair users with spinal cord injury

机译：手动轮椅使用者脊髓损伤中举重和坐姿转移过程中肩部和肘部峰值机械负荷的比较

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摘要

This study compared shoulder and elbow joint forces and moments between weightrelief lifts (WRLs) and sitting pivot transfers (SPTs) among manual wheelchair users with spinal cord injury (SCI) (N = 13) during biomechanical laboratory assessment. Minimum and maximum values were reported for each triaxial component of the joint force at the dominant shoulder and elbow during SPTs (leading and trailing roles) and WRLs. Peak shoulder flexor and adductor moments, along with elbow flexor and extensor moments, observed during the same period were also analyzed. The SPTs predominantly exposed (p < 0.001) the shoulder joints to substantial posteriorly directed forces (leading = 2.6 N/kg; trailing = 3.1 N/kg) compared with WRLs (2.2 N/kg), whereas superiorly directed forces (2.9 N/kg) were principally sustained (p < 0.001) during WRLs compared with SPTs (leading = 1.5 N/kg; trailing = 1.5 N/kg). High superiorly directed forces (3.6 to 3.9 N/kg) were observed at the elbow, which were comparable (p = 0.33) between the two tasks. The peak shoulder flexor (leading = 1.36 N?m/kg; trailing = 1.45 N?m/kg) and adductor moments (leading only = 0.46 N?m/kg), along with the peak elbow flexor moments (leading = 0.24 N?m/kg; trailing = 0.15 N?m/kg), were significantly more elevated (p < 0.021) during SPTs than during WRLs. Peak shoulder adductor (0.46 vs 0.24 N?m/kg) and elbow flexor moments were also more elevated (p = 0.03) at the leading upper limb compared with the trailing one. The peak elbow extensor moments did not differ (p = 0.167) between the two tasks (0.17 to 0.25 N?m/kg). SPTs exposed the shoulder and elbow joints to greater mechanical loads than WRLs among individuals with SCI.
机译：这项研究比较了在生物力学实验室评估过程中手动轮椅使用者脊髓损伤（SCI）（N = 13）的肩肘关节力量和举重（WRLs）与坐姿枢转（SPT）之间的力矩。在SPT（主导和尾随角色）和WRL期间，报告了优势肩部和肘部关节力的每个三轴分量的最小值和最大值。还分析了在同一时期观察到的峰值肩屈肌和内收肌力矩，以及肘屈肌和伸肌力矩。与WRLs（2.2 N / kg）相比，SPT主要将肩关节暴露于（p <0.001）肩关节承受较大的后向力（前导= 2.6 N / kg;尾随= 3.1 N / kg），而优越方向的力（2.9 N / kg）与SPT相比，WRL期间主要维持体重（p <0.001）（前导= 1.5 N / kg;尾随= 1.5 N / kg）。在肘部观察到较高的上导向力（3.6至3.9 N / kg），这在两个任务之间可比（p = 0.33）。肩屈肌峰值（前导= 1.36 N？m / kg;尾随= 1.45 N？m / kg）和内收肌力矩（仅前导= 0.46 N？m / kg），以及肘部屈肌力矩峰值（前导= 0.24 N ？m / kg;拖尾= 0.15 N？m / kg），在SPT期间比WRL期间明显更高（p <0.021）。与前者相比，前上肢的峰值肩关节内收肌（0.46 vs 0.24 N？m / kg）和肘屈肌力矩也更高（p = 0.03）。在两个任务之间（0.17至0.25 N？m / kg），肘部伸肌的峰值伸直力矩没有差异（p = 0.167）。在SCI患者中，SPT使肩和肘关节承受的机械负荷大于WRL。

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