Metabolic, cardiovascular, neuromuscular, and perceptual responses to repeated military-specific load carriage treadmill simulations

Vine, C., Coakley, S. L., Blacker, S. D., Runswick, O. R. and Myers, S. D. (2024) Metabolic, cardiovascular, neuromuscular, and perceptual responses to repeated military-specific load carriage treadmill simulations. European Journal of Sport Science, 24 (8). pp. 1110-1119. ISSN 1536-7290

[thumbnail of Vine, C. et al, Metabolic, cardiovascular, neuromuscular, and perceptual responses to repeated military-specific load carriage treadmill simulations, Eur J. Sport Sci., 2024. Which has been published in final form at https://doi.org/10.1002/ejsc.12154.]
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Text (Vine, C. et al, Metabolic, cardiovascular, neuromuscular, and perceptual responses to repeated military-specific load carriage treadmill simulations, Eur J. Sport Sci., 2024. Which has been published in final form at https://doi.org/10.1002/ejsc.12154.)
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Abstract

Bouts of military load carriage are rarely completed in isolation; however limited research has investigated the physiological responses to repeated load carriage tasks. Twelve civilian men, (age, 28 ± 8 y; stature, 185.6 ± 5.8 cm; body mass 84.3 ± 11.1 kg; maximal oxygen uptake, 51.5 ± 6.4 mL·kg-1·min-1) attended the laboratory on two occasions to undertake a familiarisation and an experimental session. Following their familiarisation session, participants completed three bouts of a fast load carriage protocol (FLCP; ~65-minutes), carrying 25 kg, interspersed with a 65-minute recovery period. Physiological strain (oxygen uptake [V̇O2], heart rate [HR]) were assessed during the FLCP bouts, and physical performance assessments (weighted counter-movement jump [wCMJ], maximal isometric voluntary contraction of the quadriceps [MIVC], seated medicine ball throw [SMBT]) were measured pre- and post- each FLCP bout. A main effect for bout and measurement time was evident for V̇O2 and HR (both p<0.001, Ѡ2= 0.103-0.816). There was no likely change in SMBT distance (p=0.201, Ѡ2=0.004), but MIVC peak force reduced by approximately 25% across measurement points (p<0.001, Ѡ2=0.133). A mean percentage change of approximately -12% from initial values, was also evident for peak wCMJ height (p=0.001, Ѡ2=0.028). Collectively, these data demonstrate that repeated FLCP bouts result in an elevated physiological strain for each successive bout, along with a substantial reduction in lower body power (wCMJ and MIVC). Future research should therefore investigate possible mitigation strategies, to maintain role-related capability.

Publication Type: Articles
Additional Information: © 2024 The Author(s).
Uncontrolled Keywords: military personnel, physical functional performance, humans, physiological stress, occupational physiology, combatant
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports
Q Science > QP Physiology
U Military Science > U Military Science (General)
Divisions: Academic Areas > Institute of Sport
Research Entities > Centre for Health and Allied Sport and Exercise Science Research (CHASER)
Related URLs:
Depositing User: Christopher Vine
Date Deposited: 12 Jun 2024 09:10
Last Modified: 12 Aug 2024 11:26
URI: https://eprints.chi.ac.uk/id/eprint/7556

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