Volume 10, Issue 2 (Spring 2020)                   PTJ 2020, 10(2): 69-78 | Back to browse issues page


XML Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Nasirzadeh A. The Influence of Horizontal Velocity on Inter-lower-limbs Local and Global Asymmetry During Walking. PTJ 2020; 10 (2) :69-78
URL: http://ptj.uswr.ac.ir/article-1-413-en.html
Department of Sports Biomechnics, Faculty of Sport Sciences and Physical Education, Kharazmi University, Tehran, Iran.
Abstract:   (2110 Views)
Purpose: Considering the influence of horizontal velocity on many biomechanical characteristics of walking, the purpose of this study was to investigate how inter-lower-limbs local and global asymmetry is influenced by changes in walking speed from slow to fast. 
Methods: Ground reaction force data and trajectory of attached markers of bilateral lower limbs of 15 right leg-dominant able-bodied males were collected at each of three walking velocity conditions (slow, normal, and fast). Walking step frequencies were controlled with a metronome. Principal Component Analysis (PCA) was performed on net sagittal joint moments of the stance phase to identify the actions of each joint and the lower limbs separately. Lower limb behavior was assumed symmetrical if the PCA curves extracted from each joint (local gait asymmetry) or each of the lower limbs (global gait asymmetry) described the same portion of the stance phase.
Results: Based on findings, the PCA method highlighted different functional tasks for ankle, knee, and hip joints suggesting local gait asymmetry at slow, normal, and fast walking. Also, at slow walking speed, total lower limbs showed global gait asymmetry, however, for normal and fast walking speeds, results showed global gait symmetry.
Conclusion: Considering the possibility of the effect of movement velocity on walking behavior, it is recommended that this factor should be controlled during walking investigations in clinical and research settings.
Full-Text [PDF 1938 kb]   (961 Downloads) |   |   Full-Text (HTML)  (569 Views)  
Type of Study: Research | Subject: General
Received: 2019/10/1 | Accepted: 2020/05/18 | Published: 2020/07/9

Add your comments about this article : Your username or Email:
CAPTCHA

Send email to the article author


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

© 2024 CC BY-NC 4.0 | Physical Treatments - Specific Physical Therapy Journal

Designed & Developed by: Yektaweb