Isomed 2000测试系统的等速向心测试方法的可信度分析

The Reliability Analysis of Isokinetic Measurement of Isomed 2000 Dynamometer

分析Isomed 2000测试系统等速向心肌力测试方法的可信度。应用标准重物对比的方法对Isomed 2000等速肌力测试系统进行检验,对19名普通健康年青人（15男,4女,平均年龄=24.1±5.6岁）进行了腰背屈/伸60°/s、髋关节屈/伸60°/s、180°/s和240°/s、膝关节屈/伸60°/s和240°/s、踝关节跖屈/背屈60°/s、180°/s和240°/s、肩关节60°/s和180°/s、肘关节屈/伸60°/s、180°/s和240°/s、腕关节屈/伸60°/s和240°/s的单侧等速向心测试和重复性测试,2次测试间隔4-7天。测试结果：1）标准重物进行的3次测试值与计算值的相关系数r〉0.999;2）腰背屈/伸60°/s、髋关节屈/伸60°/s和180°/s、膝关节屈/伸60°/s和240°/s、踝关节跖屈/背屈60°/s和180°/s、肩关节60°/s和180°/s、肘关节屈/伸60°/s和180°/s、腕关节屈/伸60°/s和240°/s测试时的力矩、做功和功率参数的组内相关系数（ICC）介于0.71-0.98之间;3）肘关节240°/s测试时力矩的ICC为0.67-0.82、髋关节240°/s测试时屈肌群各参数的ICC为0.64-0.83、踝关节240°/s测试时背屈肌群各参数值的ICC为0.36-0.82。结论：该仪器误差小,准确度、精度良好;肘关节、髋关节和踝关节240°/s测试重复性相对较差,其余各关节肌群的不同速度测试重复性中等或者良好。

The purpose of this study was to evaluate the reliability of Isomed 2000 dynamometer.We compared the dynamometer and different weight of barbells on torque.Nineteen normal subjects（15male,4female）ages 24.1±5.6with no history of related injury were tested unilaterally for concentric extension/flexion,back at 60°/s,hip at 60°/s,180°/s and 240°/s,knee at 60°/s and 240°/s,ankle at 60°/s,180°/s and 240°/s,shoulder at 60°/s and 180°/s,elbow at 60°/s,180°/s and 240°/s,wrist at 60°/s and 240°/s,utilizing standard Isomed2000 protocol.Each subject was tested two times with an interval of 4-7days.Statistical analysis of data showed that 1）The correlation coefficient（r）between the torque measured and calculated was〉0.999.2）the isokinetic concentric extension/flexion mode for back at 60°/s,hip at 60°/s and 180°/s,knee at 60°/s and 240°/s,ankle at 60°/s and 180°/s,shoulder at60°/s and 180°/s,elbow at 60°/s and 180°/s,wrist at 60°/s and 240°/s of the Isomed 2000 dynamometer was with test-retest reliability ranging from 0.71 to 0.98.3）The intraclass correlation coefficient（ICC）of elbow extension/flexion peak torque and average peak torque at240°/s to be from 0.67 to 0.82,ICC of hip flexion every parameters at 240°/s to be from0.64 to 0.83,ICC of ankle extension（dorsiflexion）every parameters at 240°/s to be from0.36 to 0.82.Conclusions：1）The measurement error of the dynamometer is small and the accuracy is fine.2）The isokinetic concentric extension/flexion mode for hip,elbow and ankle at240°/s of the dynamometer was less or not reliable for test-retest measures of peak torque,work and power;3）Other measures implied good to excellent reliable.