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生物力学模型在运动分析中具有重要作用.目前,一些常用的传统模型带有有棒标识,可能在运动中产生振动,引起误差.本文提出一种下肢无棒标识模型,可以计算下肢关节的角度、力、力矩和功.为了验证新模型,22个健康成人参加了试验,分别应用新模型和传统模型分析了他们的步行和跑步标识数据,计算并比较了其下肢的踝、膝、髋关节的角度、力、力矩和功.基于所有参数曲线,误差分析结果显示:高频振动引起的误差在传统模型中比在新模型中大一倍.可靠性分析显示:新模型的内联相关系数在步行和跑步中分别达到0.934和0.960,而传统模型分别只有0.737和0.916.结果表明新模型比传统的有棒标识模型在减少误差和提高可靠性方面均有改善.新的无棒标识下肢生物力学模型可以取代传统有棒标识下肢模型,用于医疗步态和跑步的运动分析.
Biomechanical model plays an important role in the motion analysis.At present, some commonly used traditional models with a bar logo, may produce vibration in the movement, causing errors.This paper presents a lower limb rodless identification model, you can calculate the lower limb joint angle , Force, moment and power.In order to validate the new model, 22 healthy adults participated in the experiment, analyzed their walking and running identification data using the new model and the traditional model respectively, and calculated and compared the ankle, knee and hip joint Based on all the parameter curves, the error analysis results show that the error caused by high-frequency vibration is twice as large as that of the new model in the traditional model. The reliability analysis shows that the in-line correlation coefficient 0.934 and 0.960 respectively in walking and running, compared with 0.737 and 0.916 in the traditional model respectively.The results show that the new model has better performance than the traditional model in reducing errors and improving reliability.The new rod-less identification of lower limbs The mechanical model can replace the traditional model of lower limbs with rod identification for the movement analysis of medical gait and running.