Dos Santos Wagner Teixeira, Rodrigues Erika de Carvalho, Mainenti Míriam Raquel Meira
Centro Universitário Augusto Motta, Bonsucesso, RJ, Brazil, Centro Universitário Augusto Motta (UNISUAM), Bonsucesso, RJ, Brazil.
Acta Ortop Bras. 2014;22(1):54-8. doi: 10.1590/S1413-78522014000100010.
To correlate muscule performance, body composition, pain and joint function in elderly people with gonarthrosis.
21 elderly patients were submitted to bioelectrical impedance analysis, dynamometry associated with electromyographic (EMG) evaluation of isometric knee extension, in addition to pain assessment by the Numeric Pain Intensity Scale and function assessment, by the Western Ontario and McMaster Universities (WOMAC) Osteoarthritis (OA) questionnaire. Correlations were checked by the Pearson's correlation coefficient.
The sample characteristics were mean age 67.36 ± 4.21 years old, body fat percentage 40.57±6.15%, total WOMAC score 43.27 ± 16.32%, and maximum strength 19.95 ± 6.99 kgF. Pain during movement showed a statistical association with WOMAC physical activity domain (r = 0.47) and its general score (r = 0.51); pain intensity at night presented association with WOMAC stiffness domain (r = 0.55), in addition to the negative correlation with the slope values of the Medium Frequency of the EMG signal (r = - 0.57).
pain intensity is correlated to functional incapacity in elderly people with knee OA and to a greater expression of fatigue in EMG signal. Levels of Evidence III, Study of non consecutive patients.
探讨膝关节骨性关节炎老年患者的肌肉性能、身体成分、疼痛及关节功能之间的相关性。
对21例老年患者进行生物电阻抗分析、与等长膝关节伸展肌电图（EMG）评估相关的肌力测试，此外，通过数字疼痛强度量表进行疼痛评估，并通过西安大略和麦克马斯特大学（WOMAC）骨关节炎（OA）问卷进行功能评估。采用Pearson相关系数检验相关性。
样本特征为平均年龄67.36±4.21岁，体脂百分比40.57±6.15%，WOMAC总分43.27±16.32%，最大力量19.95±6.99kgF。运动时的疼痛与WOMAC身体活动领域（r = 0.47）及其总分（r = 0.51）存在统计学关联；夜间疼痛强度与WOMAC僵硬领域相关（r = 0.55），此外与EMG信号中频斜率值呈负相关（r = - 0.57）。
膝关节OA老年患者的疼痛强度与功能障碍以及EMG信号中更大程度的疲劳表达相关。证据等级III，非连续患者研究。
