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Lower limb kinematics and physiological responses to prolonged load carriage in untrained individuals
Mullins, Alexandra K. Annett, Liam E. Drain, Jace R. Kemp, Justin G. Clark, Ross A. Whyte, Douglas G.
Mullins, Alexandra K.
Annett, Liam E.
Drain, Jace R.
Kemp, Justin G.
Clark, Ross A.
Whyte, Douglas G.
Abstract
The aim of this study was to simultaneously assess the changes in physiology, and kinematic and spatiotemporal features of gait, during prolonged load carriage in individuals without load carriage experience. Eleven males, representative of new military recruits, walked for 120 min at 5.5 km h− 1, 0% grade, on a motorised treadmill while carrying a 22 kg load. The load ( ≤ 30% body mass) was distributed over a weighted vest, combat webbing and replica model firearm, to reflect a patrol order load. Oxygen consumption and heart rate increased throughout the trial; however, apart from a minor increase in step length, there were no changes in the kinematic or spatiotemporal parameters, despite an increase in perceived exertion and discomfort. These data suggest that individuals with no experience in load carriage are able to maintain normal gait during 2 h of fixed speed walking, while carrying a patrol order load ≤ 30% body mass.
Keywords
oxygen consumption, cardiovascular drift, kinematics, spatiotemporal, gait analysis, military, 3D motion analysis
Date
2015
Type
Journal article
Journal
Ergonomics
Book
Volume
58
Issue
5
Page Range
770-780
Article Number
ACU Department
Faculty of Health Sciences
School of Behavioural and Health Sciences
School of Behavioural and Health Sciences
Relation URI
Source URL
Event URL
Open Access Status
License
File Access
Controlled