Jerome J A, Hunter K, Gordon P, McKay N
Ingham Medical Center, Lansing, Michigan.
Spine (Phila Pa 1976). 1991 Jul;16(7):804-8. doi: 10.1097/00007632-199107000-00020.
The purpose of this study was 1) to provide normative data for isokinetic trunk strength as measured by peak torque, best work repetition, and a new composite variable, "muscle performance index"; and 2) to examine the effects of protocol velocity, subject age, gender, height, and weight on these measurements. A significant decrease in peak torque of extension for females (P less than 0.0001) was seen as protocol velocity increased, but no differences were seen in males. A statistically significant amount (0.5-0.7) of the variance in isokinetic measurements was explained by subject age, height, and weight. Multivariant analysis of covariance showed the effects of these variances to be significant on all measurements except for the muscle performance index, which was unaffected by protocol velocity and remained stable without adjustments for subject age, weight, or height.
1）提供以峰值扭矩、最佳工作重复次数以及一个新的复合变量“肌肉性能指数”衡量的等速躯干力量的标准数据；2）研究测试速度、受试者年龄、性别、身高和体重对这些测量结果的影响。随着测试速度增加，女性伸展峰值扭矩显著下降（P<0.0001），但男性未见差异。受试者年龄、身高和体重可解释等速测量中具有统计学意义的部分方差（0.5-0.7）。多变量协方差分析表明，这些方差对除肌肉性能指数外的所有测量结果均有显著影响，肌肉性能指数不受测试速度影响，在不根据受试者年龄、体重或身高进行调整的情况下保持稳定。
