Health and Rehabilitation Research Centre, School of Rehabilitation and Occupation Studies, Auckland University of Technology, Private Bag 92006, Auckland, New Zealand.
Physiotherapy. 2010 Mar;96(1):14-21. doi: 10.1016/j.physio.2009.06.010. Epub 2009 Sep 4.
To compare the effects of an acute stretching intervention on knee extension range of motion, passive resistive torque and stiffness in subjects with osteoarthritis of the knee, and to compare these variables with subjects without osteoarthritis.
Cross-sectional experimental study.
Human performance laboratory.
A total of 55 participants were recruited: 28 subjects (males and females) with osteoarthritis of the knee joint and 27 subjects of a similar age without osteoarthritis of the knee joint.
Using the Kincom dynamometer, three 60-second stretches with 60seconds of rest between stretches were applied to the hamstring muscle group.
Peak knee extension range of motion, peak passive torque and stiffness in the final 10% of knee extension range of motion.
A significant (P<0.05) increase in knee extension range of motion, peak passive torque and stiffness was observed in both groups. For knee extension range of motion, the mean difference for the osteoarthritis group and non-osteoarthritis group was 4.9 degrees [95% confidence interval (CI) 0.9 to 8.5] and 4.4 degrees (95% CI 1.8 to 6.8), respectively. For peak passive torque, the mean difference in the osteoarthritis group and the non-osteoarthritis group was 4.4Nm (95% CI 0.8 to 6.9) and 1.0Nm (95% CI -1.4 to 3.5), respectively. For stiffness in the final 10% of knee extension range of motion, the mean difference for the osteoarthritis group and the non-osteoarthritis group was 0.19Nm/degree (95% CI 0.08 to 0.3) and 0.04Nm/degree (95% CI -0.05 to 0.1), respectively. Stiffness in the final 10% of knee extension range of motion was significantly higher in the osteoarthritis group compared with the non-osteoarthritis group after stretching.
Elderly individuals with and without osteoarthritis of the knee are able to demonstrate immediate beneficial adaptations to a stretching intervention. This is important as stretching is often used in preparation for exercise programmes.
比较急性伸展干预对膝伸展运动范围、被动阻力扭矩和膝关节骨关节炎患者刚度的影响，并将这些变量与无膝关节骨关节炎的患者进行比较。
横断面实验研究。
人体性能实验室。
共招募了 55 名参与者：28 名（男性和女性）膝关节骨关节炎患者和 27 名年龄相近的无膝关节骨关节炎患者。
使用 Kincom 测力计，对腘绳肌群进行三次 60 秒的伸展，每次伸展之间休息 60 秒。
膝关节伸展运动范围的峰值、膝关节伸展运动范围最后 10%时的峰值被动扭矩和刚度。
两组患者的膝关节伸展运动范围、峰值被动扭矩和刚度均有显著（P<0.05）增加。对于膝关节伸展运动范围，骨关节炎组和非骨关节炎组的平均差异分别为 4.9 度[95%置信区间（CI）0.9 至 8.5]和 4.4 度（95% CI 1.8 至 6.8）。对于峰值被动扭矩，骨关节炎组和非骨关节炎组的平均差异分别为 4.4Nm（95% CI 0.8 至 6.9）和 1.0Nm（95% CI -1.4 至 3.5）。对于膝关节伸展运动范围最后 10%时的刚度，骨关节炎组和非骨关节炎组的平均差异分别为 0.19Nm/度（95% CI 0.08 至 0.3）和 0.04Nm/度（95% CI -0.05 至 0.1）。伸展后，骨关节炎组的膝关节伸展运动范围最后 10%时的刚度明显高于非骨关节炎组。
有和没有膝关节骨关节炎的老年患者都能够对伸展干预表现出即时的有益适应。这很重要，因为伸展通常用于准备运动计划。
