Faculty of Sports Sciences, University of Extremadura, Caceres, Spain.
Arch Phys Med Rehabil. 2011 Oct;92(10):1646-51. doi: 10.1016/j.apmr.2011.04.017. Epub 2011 Aug 27.
To investigate the reliability of isokinetic peak torque and work and isometric peak torque measurements for knee flexion and extension in fibromyalgia (FM) patients by determining the smallest real difference (SRD).
Test-retest reliability study.
University laboratory.
Women with FM (N=37) aged between 34 and 74 years.
Not applicable.
The participants performed isometric, concentric, and eccentric tests of the knee. Unilateral maximal peak torque and average work were measured for each direction (flexion, extension) and contraction (isometric, concentric, eccentric) type. Relative reliability, absolute reliability, and SRD were calculated. The 3 tests were repeated after an interval of 7 days.
With the exception of eccentric flexion, all peak torque measures had an intraclass correlation coefficient (ICC) of > 0.90, and all work measures had an ICC of > 0.85. The SRD ranged between 21% and 37% for all peak torque measures and between 40% and 73% for all work measures.
Isokinetic dynamometry provides reliable measurement of peak torque and work for isometric, concentric, and eccentric knee flexion and extension in patients with FM. The present study has generated novel SRD data, which will assist physicians, therapists, and clinicians in interpreting posttreatment changes in patients with FM.
通过确定最小实际差异（SRD）来研究纤维肌痛（FM）患者膝关节屈伸时等速峰值扭矩和功以及等长峰值扭矩测量的可靠性。
测试-再测试可靠性研究。
大学实验室。
年龄在 34 至 74 岁之间的 FM 女性患者（N=37）。
不适用。
参与者进行了膝关节等长、向心和离心测试。测量了每个方向（屈伸）和收缩类型（等长、向心、离心）的单侧最大峰值扭矩和平均功。计算了相对可靠性、绝对可靠性和 SRD。3 次测试在 7 天后重复。
除了离心性屈曲外，所有峰值扭矩测量的组内相关系数（ICC）均>0.90，所有功测量的 ICC 均>0.85。所有峰值扭矩测量的 SRD 范围为 21%至 37%，所有功测量的 SRD 范围为 40%至 73%。
等动测力法为 FM 患者的等长、向心和离心膝关节屈伸提供了可靠的峰值扭矩和功测量。本研究产生了新的 SRD 数据，这将有助于医生、治疗师和临床医生解释 FM 患者的治疗后变化。
