Objective : This study obtained normative values for variable parameters of lumbar function with the isoinertial triaxial dynamometer in patients with chronic low back pain.
Subjects and Methods : 30 patients(male 15, female 15) with chronic low back pain in this study. Variable parameters that were measured with the Isostation B-200 were lumbar range of motion, isometric maximum torques, and maximum velocities in three axis.
Results : In patient male group mean R.O.M. was degrees in lumbar rotation, degrees in lumbar flexion/extension, and degrees in lumbar lateral flexion. In patient female group mean R.O.M. was degrees in lumbar rotation, degrees in lumbar flexion/extension, and degrees in lumbar lateral flexion. In patient male group mean isometric maximum torques was in lumbar rotation, in lumbar flexion, in lumbar extension, and in lumbar lateral flexion. In patient female group mean isometric maximum torques was in lumbar rotation, in lumbar flexion, in lumbar extension, and in lumbar lateral flexion. In patient male group mean maximum velocity of isoinertial exercise with low (25%) resistance was in lumbar rotation, in lumbar flexion/extension, and in lumbar lateral flexion. In patient female group mean maximum velocity of isoinertial exercise with low (25%) resistance was in lumbar rotation, in lumbar flexion/extension, and in lumbar lateral flexion. In patient male group mean maximum velocity of isoinertial exercise with high (50%) resistance was in lumbar rotation, in lumbar flexion/extension, and in lumbar lateral flexion. In patient female group mean maximum velocity of isoinertial exercise with high (50%) resistance was in lumbar rotation, in lumbar flexion/extension, and in lumbar lateral flexion.
Conclusion : Maximum isoinertial velocities were more reliable and more significant than isometric maximum torque for the objective assessment of chronic low hack pain.
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