肌肉力量、收缩速度和脑卒中后的功能表现。
Muscle power, contraction velocity and functional performance after stroke.
机构信息
Department of Physical Medicine, Medical University of Lodz, Lodz, Poland.
Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, Lodz, Poland.
出版信息
Brain Behav. 2019 Apr;9(4):e01243. doi: 10.1002/brb3.1243. Epub 2019 Feb 28.
OBJECTIVE
The goal of this study was to describe muscle function deficit in patients after stroke as well as to define the relationship between maximal muscle power (P ) and optimal shortening velocity (υ ) with functional efficiency in stroke survivors.
MATERIAL AND METHODS
A total of 134 participants were enrolled in the study, including 67 patients after a stroke and 67 volunteers, matched for age and sex (controls). Functional performance was measured with the timed Up and Go test (TUG) and additionally with Rivermead Motor Assessment (RMA) and Barthel Index (BI) in stroke survivors. To assess P and υ of the knee extensor muscles, a specially equipped Monark cycle ergometer was used.
RESULTS
The power generated by stroke survivors was 49.6% that of their peers and muscle contraction velocity was 65.5%. P /kg and υ were associated with TUG outcomes in both groups. P /kg and υ were associated with age in the control group, but not in patients after stroke. In multivariate analysis in patients after stroke, TUG was better predicted by P /kg or υ than by the age. In stroke survivors, both P /kg and υ were related to the BI and to the RMA total results. Both BI and RMA total were not determined by age.
CONCLUSIONS
Muscle power and muscle contraction velocity in patients who have had a stroke within three months have reduced markedly. These factors significantly affect functional performance. Muscle power and optimal shortening velocity are more important determinants of functional status than age in these stroke survivors.
目的
本研究旨在描述脑卒中后患者的肌肉功能障碍，并定义最大肌肉力量（P）和最佳缩短速度（υ）与脑卒中幸存者功能效率之间的关系。
材料与方法
共有 134 名参与者入组研究，包括 67 名脑卒中后患者和 67 名年龄和性别匹配的志愿者（对照组）。脑卒中幸存者的功能表现通过计时起立行走测试（TUG）以及Rivermead 运动评估（RMA）和巴氏指数（BI）进行评估。为了评估膝关节伸肌的 P 和 υ，使用了专门配备的 Monark 功率自行车。
结果
脑卒中幸存者产生的力量为同龄人的 49.6%，肌肉收缩速度为 65.5%。P/kg 和 υ 与两组的 TUG 结果相关。P/kg 和 υ 与对照组的年龄相关，但与脑卒中后患者无关。在脑卒中后患者的多变量分析中，TUG 可以通过 P/kg 或 υ 更好地预测，而不是通过年龄。在脑卒中幸存者中，P/kg 和 υ 均与 BI 和 RMA 总分相关。BI 和 RMA 总分不受年龄影响。
结论
脑卒中后 3 个月内患者的肌肉力量和肌肉收缩速度明显降低。这些因素对功能表现有显著影响。在这些脑卒中幸存者中，肌肉力量和最佳缩短速度是功能状态的更重要决定因素，而不是年龄。
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