摘要
目的探讨躯干屈伸肌等长与等速向心收缩肌力测试结果的相关性。方法对50例健康受试者分别进行躯干肌屈曲、伸展等长收缩与等速向心收缩肌力测试,将二种方法测试的屈曲、伸展峰力矩(peak torque,PT)和屈曲、伸展峰力矩之比(F/E)进行相关与回归分析。结果躯干屈伸肌等长收缩、等速向心收缩肌力测试中PT值呈显著正相关(r伸=0.827,P=0.000<0.05,r屈=0.873,P=0.000<0.05);等长收缩和等速向心收缩肌力测试获得的屈曲、伸展PT值建立的回归方程式分别为y^=8.158+1.097x和y^=-12.375+0.781x,经检验成立并有统计学意义(P<0.05);而屈曲、伸展峰力矩之比(F/E)无相关性(r=0.18,P=0.208>0.05),二者差异有统计学意义(t=-7.588,P=0.000<0.05)。结论躯干屈伸肌等长收缩肌力测试能准确地反映躯干肌肌力的变化,并且用中立位等长收缩肌力测试的F/E比值反映躯干的稳定性更合理。
Objective To explore the correlation between the strength of trunk flexors and extensors obtained by isometric and isokinetic concentric tests. Methods The strength of trunk extensors and flexors were measured by isometric and isokinetic concentric tests during trunk flexion and extension in 50 healthy subjects, and the peak torque of flexion and extension (FPT and EPT) and the ratios of FPT/EPT were analyzed with correlation and regression analysis. Results The FPT and EPT of trunk flexors and extensors were positively correlated (r_F=0.827,P<0.05, r_E=0.873, P<0.05),while there had significant difference but no correlation between the ratios of FPT/EPT in two tests(t=-7.588,P<0.05; γ=0.18,P>0.05, respectively), the regression equations of FPT and EPT were y^=8.158+1.097X and y^=-12.375+0.781X, respectively. Conclusion The isometric test of the trunk extensors and flexors could assess accurately the changes of the trunk muscle strength without aggravating pain and diseases. It is more reasonable to evaluate the stability of trunk with the FPT/EPT ratio at neutral position.
出处
《中华物理医学与康复杂志》
CAS
CSCD
北大核心
2005年第5期302-305,共4页
Chinese Journal of Physical Medicine and Rehabilitation
关键词
躯干肌
肌力测试
等长收缩
等速向心收缩
Trunk muscle
Muscle strength test
Isometric concentric contraction
Isokinetic concentric contraction
