Dziuba Alicja Katarzyna, Tylkowska Małgorzata, Jaroszczuk Sebastian
University School of Physical Education, Aleje J.I. Paderewskiego 35, 51-612 Wrocław, Poland.
Acta Bioeng Biomech. 2014;16(3):77-87.
The pathological gait of children with cerebral palsy involves higher mechanical work, which limits their ability to function properly in society. Mechanical work is directly related to walking speed and, although a number of studies have been carried out in this field, few of them analysed the effect of the speed. The study aimed to develop standards for mechanical work during gait of children with cerebral palsy depending on the walking speed. The study covered 18 children with cerebral palsy and 14 healthy children. The BTS Smart software and the author's software were used to evaluate mechanical work, kinetic, potential and rotational energy connected with motion of the children body during walk. Compared to healthy subjects, mechanical work in children with cerebral palsy increases with the degree of disability. It can be expressed as a linear function of walking speed and shows strong and statistically significant correlations with walking gait. A negative statistically significant correlation between the degree of disability and walking speed can be observed. The highest contribution to the total mechanical energy during gait is from mechanical energy of the feet. Instantaneous value of rotational energy is 700 times lower than the instantaneous mechanical energy. An increase in walking speed causes the increase in the effect of the index of kinetic energy on total mechanical work. The method described can provide an objective supplementation for doctors and physical therapists to perform a simple and immediate diagnosis without much technical knowledge.
脑瘫患儿的病理性步态涉及更高的机械功，这限制了他们在社会中正常发挥功能的能力。机械功与步行速度直接相关，尽管该领域已经开展了多项研究，但其中很少有分析速度的影响。本研究旨在根据步行速度制定脑瘫患儿步态期间机械功的标准。该研究涵盖了18名脑瘫患儿和14名健康儿童。使用BTS Smart软件和作者的软件来评估与儿童身体行走过程中运动相关的机械功、动能、势能和旋转能。与健康受试者相比，脑瘫患儿的机械功随着残疾程度的增加而增加。它可以表示为步行速度的线性函数，并且与步行步态显示出强烈且具有统计学意义的相关性。可以观察到残疾程度与步行速度之间存在负的统计学显著相关性。步态期间对总机械能贡献最大的是足部的机械能。旋转能的瞬时值比瞬时机械能低700倍。步行速度的增加会导致动能指数对总机械功的影响增加。所描述的方法可以为医生和物理治疗师提供客观补充，以便在无需太多技术知识的情况下进行简单而即时的诊断。
