Department of Physical Medicine and Rehabilitation, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
Department of Physical Medicine and Rehabilitation, Kaohsiung Municipal Siaogang Hospital, Kaohsiung 812, Taiwan.
Medicina (Kaunas). 2021 Sep 29;57(10):1037. doi: 10.3390/medicina57101037.
Whole body vibration is widely used to enhance muscle performance, but evidence of its effects on the tendon stiffness of the knee extensor tendon in stroke remains inconclusive. Our study was aimed to determine the difference in patellar and quadriceps tendon stiffness between hemiparetic and unaffected limbs in stroke patients and to investigate the immediate effect of whole body vibration on tendon stiffness. The patellar and quadriceps tendon stiffness of first-ever hemiplegic stroke patients was evaluated with elastography to compare the differences between hemiparetic and unaffected limbs. After one 20 min session of whole body vibration exercise in the standing position, tendon stiffness was again measured to evaluate the immediate effects of whole body vibration on tendon stiffness. The results showed no significant differences in the tendon stiffness of the patellar and quadriceps tendons between hemiparetic and unaffected limbs. However, significant associations were found between the tendon stiffness of the patellar and quadriceps tendons and knee extensor spasticity on the hemiparetic side (ρ = 0.62; = 0.044). There were no significant changes in tendon stiffness after a single session of whole body vibration. In conclusion, knee extensor tendon stiffness in hemiparetic limbs is positively correlated to the degree of knee extensor spasticity in stroke patients. However, a single session of whole body vibration does not alter tendon stiffness.
全身振动被广泛用于增强肌肉性能，但它对脑卒中患者膝伸肌腱硬度的影响证据尚不明确。我们的研究旨在确定脑卒中患者偏瘫侧和非偏瘫侧髌腱和股四头肌肌腱硬度的差异，并探讨全身振动对肌腱硬度的即时影响。使用弹性成像评估首次偏瘫脑卒中患者髌腱和股四头肌肌腱硬度，以比较偏瘫侧和非偏瘫侧之间的差异。在站立位进行一次 20 分钟的全身振动运动后，再次测量肌腱硬度，以评估全身振动对肌腱硬度的即时影响。结果显示，偏瘫侧和非偏瘫侧髌腱和股四头肌肌腱硬度无显著差异。然而，髌腱和股四头肌肌腱硬度与偏瘫侧膝伸肌痉挛程度之间存在显著相关性（ρ=0.62；p=0.044）。单次全身振动后，肌腱硬度无明显变化。总之，脑卒中患者偏瘫侧膝伸肌腱硬度与膝伸肌痉挛程度呈正相关。然而，单次全身振动并不能改变肌腱硬度。
