Hines Mark G, Tillin Neale A, Luo Jin, Lee Raymond Y W
London South Bank University, School of Applied Sciences, 103 Borough Road, London SE1 0AA, UK; British College of Osteopathic Medicine, 3 Sumpter Close, London NW3 5HR, UK.
University of Roehampton, School of Life Sciences, Whiteland's College, Holybourne Avenue, London SW15 4JD, UK.
Clin Biomech (Bristol). 2018 Dec;60:134-140. doi: 10.1016/j.clinbiomech.2018.10.012. Epub 2018 Oct 14.
It has been found that alterations in passive muscle properties may be associated with low back pain, and these may be responsible for the altered gait parameters often observed in subjects with back pain. The purpose of the present study was to assess total hip and passive hip extensor moments in people with or without low back pain during the hip flexion component of walking.
52 subjects volunteered for this study (low back pain group, n = 25 (male n = 13, female n = 12), control group, n = 27 (male n = 15, female n = 12)). Passive hip moments were calculated using an adapted force transducer during supine testing. A biomechanical model and predictive equation were used to calculate passive hip moments during walking. Total hip moments were calculated with the use of a 9 camera, 3-D motion-capture system.
Independent samples t-tests demonstrated no significant differences between groups for gait parameters or hip or knee angles. Results of the ANOVAs demonstrated significant differences in passive hip flexor moments during the second half of hip flexion (P < 0.05).There were also significant differences in hip power and work done during peaks of power absorption and the second peak of power generation (P < 0.05).
The present data demonstrates that subjects with low back pain have altered passive hip extensor and total power and work done during walking compared with healthy controls. Biomechanical models should include individual measurements of passive joint moments.
研究发现，被动肌肉特性的改变可能与腰痛有关，这可能是导致腰痛患者经常出现步态参数改变的原因。本研究的目的是评估在步行的髋关节屈曲阶段，有或没有腰痛的人群的总髋关节力矩和被动髋关节伸肌力矩。
52名受试者自愿参与本研究（腰痛组，n = 25（男性n = 13，女性n = 12），对照组，n = 27（男性n = 15，女性n = 12））。在仰卧位测试期间，使用适配的力传感器计算被动髋关节力矩。使用生物力学模型和预测方程计算步行期间的被动髋关节力矩。使用9台摄像机的三维运动捕捉系统计算总髋关节力矩。
独立样本t检验表明，两组在步态参数、髋关节或膝关节角度方面无显著差异。方差分析结果表明，在髋关节屈曲后半段，被动髋关节屈肌力矩存在显著差异（P < 0.05）。在功率吸收峰值和第二次功率产生峰值期间，髋关节功率和做功也存在显著差异（P < 0.05）。
目前的数据表明，与健康对照组相比，腰痛患者在步行过程中被动髋关节伸肌、总功率和做功发生了改变。生物力学模型应包括被动关节力矩的个体测量。
