Treadmill load carriage overestimates energy expenditure of overground load carriage

This study compared physiological and biomechanical responses between treadmill and overground load carriage. Thirty adults completed six 10-minute walking trials across three loads (0, 20, and 40% body mass) and two surfaces (treadmill and overground). Relative oxygen consumption was significantly...

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Bibliographic Details
Published in:Ergonomics 2021-04, Vol.64 (4), p.521-531
Main Authors: Vickery-Howe, Danielle M., Drain, Jace R., Clarke, Anthea C., Dascombe, Ben J., McWilliam, Joel T., Middleton, Kane J.
Format: Article
Language:English
Subjects:
Abbreviations
Ankle
Biomechanics
Body mass
Carbon dioxide
Energy expenditure
Fitness equipment
Gait
Heart rate
Kinematics
Load
military ergonomics
Oxygen
Oxygen consumption
physiological demand
Physiological responses
Physiology
Plantar flexion
Standard error
Treadmills
Walking
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Summary:This study compared physiological and biomechanical responses between treadmill and overground load carriage. Thirty adults completed six 10-minute walking trials across three loads (0, 20, and 40% body mass) and two surfaces (treadmill and overground). Relative oxygen consumption was significantly greater on the treadmill for 20% (1.54 ± 0.20 mL⋅kg −1 ⋅min −1 ) and 40% loads (1.08 ± 0.20 mL⋅kg −1 ⋅min −1 ). All other physiological and perceptual responses were significantly higher in the treadmill condition and with increases in load. Stance time was longer (0%: 0.05 s; 20%: 0.02 s, 40%: 0.05 s, p 
ISSN:0014-0139
1366-5847
DOI:10.1080/00140139.2020.1839675