|本期目录/Table of Contents|

无棒标识的下肢生物力学模型在步行和跑步运动分析中的应用(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2015年5期
页码:
383-390
栏目:
神经工程学中的精密测量、计算与控制技术
出版日期:
2015-09-15

文章信息/Info

Title:
A Lower Limb Biomechanical Model Without Using Wand-Markers

for Motion Analysis During Walking and Running

作者:
Ghaffar Muhammad1 Raza Syed12 Arnold Graham1 Abboud Rami1 王威杰1
(1. 英国邓迪大学运动分析研究所,矫形及创伤外科系,泰滨矫形及康复技术中心, 邓迪 DD1 9SY;

2. 巴基斯坦NED理工大学生物医学工程系, 卡拉奇 78000)

Author(s):
Ghaffar Muhammad1 Raza Syed12 Arnold Graham1 Abboud Rami1 Wang Weijie1
?

(1. Institute of Motion Analysis and Research, Department of Orthopaedic and Trauma Surgery, Tayside Orthopaedics and Rehabilitation

Technology Centre, University of Dundee, Dundee DD1 9SY, United Kingdom;

2. Department of Biomedical Engineering, NED University of Engineering and Technology, Karachi 78000, Pakistan)

关键词:
生物力学模型 可靠性 误差分析 下肢关节 步行 跑步
Keywords:
biomechanical model reliability error analysis lower limb joints walking running
分类号:
R33
DOI:
10.13494/j.npe.20150050
文献标识码:
A
摘要:
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.

Abstract:
Biomechanical models play an important role in motion analysis. Some models routinely used in motion analysis have wandmarkers and may bring about errors

due to vibrations during movement. This study proposed a lower limb model without using wandmarkers which can calculate joint angle, force, moment and power.

Twentytwo healthy subjects participated in this study. The proposed model was compared with a traditional model which has wandmarkers and is widely used in many

clinical gait laboratories in processing running and walking data. Kinematical and kinetic parameters for the hip, knee and ankle were obtained using both models.

The results show that the errors produced by high frequency of vibration between the filtered and the raw data from the proposed model are approximately half of

those from the traditional model. The analysis of reliability shows that intraclass correlation coefficients are 0934 and 0960 in running and walking,

respectively, using the proposed model while these coefficients are 0737 and 0916 using the traditional one. The results indicate that being wandmarker free

makes the proposed model of better quality in the calculation of kinetic and kinematical parameters than the traditional model. The proposed model could be

considered as an improved alternative for the traditional ones in motion analysis of clinical gait and running.

参考文献/References

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备注/Memo

备注/Memo:
收稿日期: 2015-06-15.
基金项目: 英国文化学会和巴基斯坦高等教育委员会的英巴知识经济伙伴基金资助项目(KEP-058);英国爱丁堡皇家学会和中国国家自然科学基金联合资助项目;西班牙科学与创新部基金资助项目(CGL2010-20868).
作者简介: Ghaffar Muhammad(1972—),男,主任医师.
通讯作者: 王威杰, 高级讲师,w.wang@dundee.ac.uk.
更新日期/Last Update: 2015-11-27