Department of Physical Therapy, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.
Department of Physical Therapy, Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.
Braz J Phys Ther. 2019 May-Jun;23(3):221-227. doi: 10.1016/j.bjpt.2018.08.001. Epub 2018 Aug 18.
This study had three aims: (1) to evaluate the relationships between the paretic knee extensor muscle strength and global lower-limb strength in individuals who had suffered a sub-acute/chronic stroke, (2) to determine whether global lower-limb strength, sex, body mass index, or age could predict knee extensor muscle strength, and 3) to investigate whether the results obtained via a Modified Sphygmomanometer Test (MST) would be similar to those obtained using a hand-held dynamometer.
This was a cross-sectional study, performed at a research laboratory, at participants' homes, or at outpatient clinics. Forty-two individuals with a sub-acute stroke and 45 individuals with a chronic stroke participated. Maximum isometric strength of the paretic lower-limb muscles (i.e. hip, knee, and ankle flexors/extensors, hip abductors) was measured using the MST and a hand-held dynamometer.
Significant and high correlation coefficients were found between knee extensor muscle strength and global lower-limb strength as measured by the combined strength values of 6 lower limb muscle groups in individuals with sub-acute (0.81≤r≤0.88; p<0.05) and chronic (0.82≤r≤0.85; p<0.05) stroke. Step-wise multiple regression analysis revealed that only global lower-limb strength was retained in the model and accounted for 66-78% and 67-72% (p<0.001) of the variance in knee extensor muscle strength at the sub-acute and chronic phases post-stroke, respectively. The results obtained via the MST were similar to those obtained using the hand-held dynamometer.
Paretic knee extensor muscles strength, assessed using a MST or a hand-held dynamometer, indicates global lower-limb strength in individuals with a sub-acute or chronic stroke.
本研究有三个目的：（1）评估亚急性/慢性脑卒中后个体患侧膝关节伸肌肌力与下肢整体力量之间的关系；（2）确定下肢整体力量、性别、体重指数或年龄是否可以预测膝关节伸肌肌力；（3）探讨通过改良血压计测试（MST）获得的结果是否与使用手持式测力计获得的结果相似。
这是一项横断面研究，在研究实验室、参与者家中或门诊诊所进行。共有 42 名亚急性脑卒中患者和 45 名慢性脑卒中患者参与。使用 MST 和手持式测力计测量患侧下肢肌肉（即髋、膝、踝关节屈肌/伸肌、髋外展肌）的最大等长肌力。
在亚急性（0.81≤r≤0.88；p<0.05）和慢性（0.82≤r≤0.85；p<0.05）脑卒中患者中，膝关节伸肌肌力与下肢整体力量之间存在显著且高度相关的相关系数，下肢整体力量由 6 个下肢肌肉群的组合力量值表示。逐步多元回归分析显示，仅下肢整体力量保留在模型中，分别占亚急性和慢性脑卒中后膝关节伸肌肌力变异的 66-78%和 67-72%（p<0.001）。通过 MST 获得的结果与使用手持式测力计获得的结果相似。
使用 MST 或手持式测力计评估的患侧膝关节伸肌肌力可反映亚急性或慢性脑卒中患者的下肢整体力量。
