Olney S J, Griffin M P, Monga T N, McBride I D
Queen's University, Kingston, ON, Canada.
Arch Phys Med Rehabil. 1991 Apr;72(5):309-14.
Biomechanical analysis of the work and power patterns involved in gait provides insight into the nature of gait deficits and suggests methods for improvement. The purpose of this study was to describe the work and power characteristics during gait for both limbs of hemiplegic patients, and to determine the work and power variables related to self-selected speeds of walking. The gait of 30 ambulatory adults between the ages of 47 and 79 years was studied using two-dimensional cinematography and force-plate data in a link-segment model. About 40% of the positive work required for walking was performed by the muscles of the affected side. Major contributors were the ankle plantar flexors, hip flexors, and hip extensors. The results suggest interdependence between the limbs and between muscle groups of the same limb; a need for further research is indicated.
对步态中所涉及的功和功率模式进行生物力学分析，有助于深入了解步态缺陷的本质，并提出改进方法。本研究的目的是描述偏瘫患者双下肢在步态中的功和功率特征，并确定与自选步行速度相关的功和功率变量。采用二维摄影术和力板数据，在环节模型中对30名年龄在47至79岁之间的能行走的成年人的步态进行了研究。步行所需的约40%的正功由患侧肌肉完成。主要贡献者是踝跖屈肌、髋屈肌和髋伸肌。结果表明双下肢之间以及同一肢体的肌肉群之间存在相互依存关系；这表明需要进一步研究。
