- Title
- Treadmill load carriage overestimates energy expenditure of overground load carriage
- Creator
- Vickery-Howe, Danielle M.; Drain, Jace R.; Clarke, Anthea C.; Dascombe, Ben J.; McWilliam, Joel T.; Middleton, Kane J.
- Relation
- Ergonomics Vol. 64, Issue 4, p. 521-531
- Publisher Link
- http://dx.doi.org/10.1080/00140139.2020.1839675
- Publisher
- Taylor & Francis
- Resource Type
- journal article
- Date
- 2020
- Description
- 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 < 0.001) and cadence was lower (0%: 1 step·min−1; 20%: 2 steps·min−1; 40%: 3 steps·min−1, p < 0.05) on the treadmill. Peak lower limb joint angles were similar between surfaces except for ankle plantar flexion, which was 8˚ greater on the treadmill. The physiological responses to treadmill-based load carriage are generally not transferable to overground load carriage and caution must be taken when conducting treadmill-based load carriage research to inform operational-based scenarios.
- Subject
- gait; physiological demand; biomechanics; kinematics; military ergonomics
- Identifier
- http://hdl.handle.net/1959.13/1445875
- Identifier
- uon:42702
- Identifier
- ISSN:0014-0139
- Language
- eng
- Reviewed
- Hits: 848
- Visitors: 845
- Downloads: 0