School of Kinesiology and Health Studies, Queen's University, Kingston, ON, Canada.
Eur J Phys Rehabil Med. 2012 Dec;48(4):569-75. Epub 2012 Jun 20.
Thigh musculature strength assessment in individuals with knee osteoarthritis is routinely performed in rehabilitative settings. A factor that may influence results is pain experienced during testing.
To assess whether pain experienced during isokinetic testing in individuals with knee osteoarthritis is dependent on the angular velocity prescribed.
Experimental, repeated measures.
University laboratory.
Thirty-five individuals (19 women, 16 men) with tibiofemoral osteoarthritis.
Participants performed three randomized sets of five maximal concentric extension-flexion repetitions at 60°/s, 90°/s and 120°/s. Pain intensity was measured immediately after the completion of each set. Strength outcomes for each set were the average peak moment.
Across gender, pain level was not significantly affected by testing velocity (P=0.18, η(p)(2) =0.05). There was a trend of women reporting more pain than men across all testing velocities, however this comparison did not reach statistical significance (P=0.18, η(p)(2)=0.05). There was a significant main effect of testing velocity on strength, with the highest level attained at 60°/s. However, no difference in strength was noted when testing was performed at 90°/s or 120°/s.
A large variation in pain scores within and across conditions and gender was noted, suggesting that at the current stage: 1) isokinetic angular velocity prescription be performed on an individual patient basis; and 2) improvements in the manner pain is recorded are needed in order to reduce the variations in pain scores.
Individual prescription of angular velocity may be necessary for optimal strength output and reduction of pain during effort exertion in this patient population.
在膝关节骨关节炎患者的康复环境中，通常会进行大腿肌肉力量评估。可能影响结果的一个因素是测试过程中感受到的疼痛。
评估膝关节骨关节炎患者在进行等速测试时所经历的疼痛是否取决于所规定的角速度。
实验，重复测量。
大学实验室。
35 名（19 名女性，16 名男性）患有胫股关节炎的个体。
参与者进行了三组随机的五次最大向心伸屈重复测试，角速度分别为 60°/s、90°/s 和 120°/s。在每组完成后立即测量疼痛强度。每组的力量结果为平均峰值力矩。
无论性别如何，疼痛水平都不受测试速度的显著影响（P=0.18，η(p)(2) =0.05）。在所有测试速度下，女性报告的疼痛程度都高于男性，但这种比较没有达到统计学意义（P=0.18，η(p)(2)=0.05）。测试速度对力量有显著的主要影响，在 60°/s 时达到最高水平。然而，当在 90°/s 或 120°/s 进行测试时，力量没有差异。
在个体和个体之间以及性别之间，疼痛评分存在很大差异，这表明在现阶段：1）等速角速度的处方应根据个体患者的情况进行；2）需要改进疼痛记录的方式，以减少疼痛评分的差异。
对于该患者群体，为了获得最佳的力量输出和减少用力时的疼痛，可能需要对角速度进行个体化处方。
