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Titre du Document
Metabolic responses of South African soldiers during simulated marching with 16 combinations of speed and backpack load
Auteur(s)
CHRISTIE Candice J. ; SCOTT Patricia A.
Résumé
Objectives: This study assessed the metabolic responses of South African soldiers marching at different speeds and carrying varying loads. The main objective was to establish the physiological cost of a range of speed/load combinations to identify the energy requirements to meet a diversity of march objectives. Methods: Thirty male soldiers marched on a treadmill for 6 minutes with varying combinations of speed and load, established through numerous pilot studies and in consultation with military personnel. The four speeds were 3.5, 4.5, 5.5, and 6.5 km.-1, combined with the four loads of 20, 35, 50, and 65 kg, totaling 16 combinations. Each participant completed eight of the 16 conditions, during which the participants wore standardized military gear and were attached to a portable ergospirometer (the Metamax, Cortex, Leipzig, Germany) for the duration of the march. Results: Based on the responses, five discrete categories of speed/load combinations were identified. These combinations were categorized as nominal (<40% of maximal oxygen consumption [VO2max]), moderate (40-50% of VO2max), heavy (50-65% of VO2max), very heavy (65-80% of VO2max), and excessive (>80% of VO2max), with each categorization incorporating diverse combinations of speed and load. Conclusion: The findings demonstrate that the interplay between marching speed and backpa
Editeur
Association of Military Surgeons
Identifiant
PMID : 16130645 ISSN : 0026-4075 CODEN : MMEDA9
Source
Military medicine A. 2005, vol. 170, n° 7, pp. 619-622 [4 pages]
Langue
Anglais
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