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  4. Correlations between heelstrike impulsive loading and joint kinematics of the lower extremities during normal level walking
 
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Correlations between heelstrike impulsive loading and joint kinematics of the lower extremities during normal level walking

Journal
Journal of Mechanics
Journal Volume
28
Journal Issue
2
Pages
337-344
Date Issued
2012
Author(s)
Chang, C.-F.
Shih, K.-S.
TING-MING WANG  
Huang, C.-H.
SHIER-CHIEG HUANG  
TUNG-WU LU  
DOI
10.1017/jmech.2012.37
URI
https://scholars.lib.ntu.edu.tw/handle/123456789/464498
URL
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84860813763&doi=10.1017%2fjmech.2012.37&partnerID=40&md5=0facfbf780f7e81db9b907fe86310990
Abstract
Impulsive loading by the ground reaction force (GRF) around heelstrike during walking is closely related to joint degeneration and might be affected by joint movement of the locomotor system. Fifteen healthy males (age: 25.5 3 years) were studied to investigate the association between the quantitative joint angles, angular velocities and accelerations of the lower-limb joints, and the loading rates of the GRF. Apart from the gait speed, both the ipsilateral kinematics during the swing phase, and the contralateral kinematics around the beginning of the terminal double limb stance (DLS), may significantly contribute to the heelstrike and maximum loading rates of the GRF. The magnitude of the heelstrike impulsive GRF was particularly affected by the peak ankle dorsiflexion velocity during the swing phase of the ipsilateral limb. However, for generating the maximum loading rate of nearly eight times the magnitude of that of the heelstrike one needed more kinematic variables to be modulated in advance, especially the knee flexion velocities around the beginning of the terminal DLS of the contralateral limb. Knowledge of the joint mechanics of the locomotor system for controlling the magnitude of the impulsive GRF during normal walking might be helpful for gait retraining for the elderly or patients who might have excessive impulsive GRF and a high risk of joint degeneration. © 2011 The Society of Theoretical and Applied Mechanics, R.O.C.
Subjects
Gait
Heelstrike impulsive loading
Joint kinematics
Type
journal article

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