Kues J M, Rothstein J M, Lamb R L
Department of Physical Therapy, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298.
Phys Ther. 1994 Jul;74(7):674-83. doi: 10.1093/ptj/74.7.674.
The purpose of this study was to describe the relationships among measurements of torque produced during selected maximal voluntary contractions of the quadriceps femoris muscles.
Twenty nondisabled women, ranging in age from 21 to 33 years (X = 25, SD = 3.5), volunteered to participate in the study.
The subjects were tested on a dynamometer. Subjects performed isometric contractions at 40 and 60 degrees of knee flexion and concentric and eccentric isokinetic contractions at velocities of 30 degrees, 90 degrees, 120 degrees, and 180 degrees/s. Isometric knee extensor torques, concentric knee extensor peak torques, and eccentric knee extensor peak torques were determined for each subject. Coefficients of determination (r2) and linear regression equations were calculated to determine the strength and nature of the relationships among the measurements.
The coefficients of determination ranged from .60 to .94.
The torque measurements were moderately to highly correlated, suggesting that the measurements obtained during different maximal voluntary contractions may be assessing similar components of performance.
本研究的目的是描述股四头肌在选定的最大自主收缩过程中产生的扭矩测量值之间的关系。
20名非残疾女性，年龄在21至33岁之间（X = 25，标准差 = 3.5），自愿参与本研究。
受试者在测力计上进行测试。受试者在膝关节屈曲40度和60度时进行等长收缩，并在30度、90度、120度和180度/秒的速度下进行向心和离心等速收缩。测定每个受试者的等长膝关节伸肌扭矩、向心膝关节伸肌峰值扭矩和离心膝关节伸肌峰值扭矩。计算决定系数（r2）和线性回归方程，以确定测量值之间关系的强度和性质。
决定系数范围为0.60至0.94。
扭矩测量值之间存在中度至高度相关性，表明在不同的最大自主收缩过程中获得的测量值可能在评估表现的相似组成部分。
