上肢用力并不能增加不完全性脊髓损伤患者的最大自主肌肉激活。
Upper limb effort does not increase maximal voluntary muscle activation in individuals with incomplete spinal cord injury.
作者信息
Huang Helen J, Ferris Daniel P
机构信息
Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.
出版信息
Clin Neurophysiol. 2009 Sep;120(9):1741-9. doi: 10.1016/j.clinph.2009.07.038. Epub 2009 Aug 21.
OBJECTIVE
To determine the effect of upper limb effort on maximal lower limb muscle activation in individuals with incomplete spinal cord injury.
METHODS
Fifteen individuals with incomplete spinal cord injury performed recumbent stepping using different combinations of upper and lower limb efforts.
RESULTS
There was no significant difference in active lower limb electromyography amplitudes regardless of whether the upper limbs were resting or exerting maximal effort. Upper limb effort increased passive lower limb muscle activation and likewise, lower limb effort increased passive upper limb muscle activation.
CONCLUSIONS
Upper limb effort did not increase lower limb muscle activation during active lower limb effort in individuals with incomplete spinal cord injury during recumbent stepping. This suggests that individuals with incomplete spinal cord injury cannot recruit additional lower limb motor units using maximal volitional effort of their upper limbs.
SIGNIFICANCE
Understanding how upper limb effort and movement influences lower limb muscle activation patterns in incomplete spinal cord injury patients has implications for prescribing therapies for lower limb rehabilitation.
目的
确定上肢用力对不完全性脊髓损伤患者最大下肢肌肉激活的影响。
方法
15名不完全性脊髓损伤患者采用上肢和下肢用力的不同组合进行卧位踏步。
结果
无论上肢是休息还是最大用力，主动下肢肌电图幅度均无显著差异。上肢用力增加了被动下肢肌肉激活，同样，下肢用力增加了被动上肢肌肉激活。
结论
在不完全性脊髓损伤患者卧位踏步时，主动下肢用力过程中上肢用力并未增加下肢肌肉激活。这表明不完全性脊髓损伤患者无法通过上肢的最大意志用力来募集额外的下肢运动单位。
意义
了解上肢用力和运动如何影响不完全性脊髓损伤患者的下肢肌肉激活模式，对制定下肢康复治疗方案具有重要意义。
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