Effect of work:rest cycle duration on VO2 fluctuations during intermittent exercise

Autor: Combes, Adrien, Dekerle, Jeanne, Bougault, Valerie, Daussin, Frederic
Přispěvatelé: Univ. Littoral Côte d’Opale, Univ. Artois, Université de Lille, Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS], Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 (URePSSS), Université d'Artois (UA)-Université de Lille-Université du Littoral Côte d'Opale (ULCO), Université d'Artois (UA)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Journal of Sports Sciences
Journal of Sports Sciences, Taylor & Francis, 2017, Journal of sports sciences, 35, pp.7-13. ⟨10.1080/02640414.2016.1154591⟩
Journal of Sports Sciences, 2017, Journal of sports sciences, 35, pp.7-13. ⟨10.1080/02640414.2016.1154591⟩
ISSN: 0264-0414
1466-447X
DOI: 10.1080/02640414.2016.1154591⟩
Popis: International audience; The succession of on-transient phases that induce a repetition of metabolic changes is a possible mechanism responsible for the greater response to intermittent training (IT). The objective of this study was to quantify [Formula: see text] fluctuations during intermittent exercise characterised by the same work:rest ratio, but different durations and identify which duration leads to the greatest fluctuations. Ten participants (24 ± 5 years; [Formula: see text]: 42 ± 7 mL·min ·kg ) performed (1) an incremental test to exhaustion to determine peak work rate (WR) and oxygen uptake ([Formula: see text]), (2), and three 1 h intermittent exercises alternating work period at 70% WR with passive recovery period of different 1:1 work:recovery duty cycles (30 s:30 s, 60 s:60 s, 120 s:120 s). [Formula: see text] response analysis revealed differences in the fluctuations across the intermittent conditions despite an identical total energy expenditure. The sum of the cycle's nadir-to-peak [Formula: see text] differences (ΣΔ[Formula: see text]) and the oxygen fluctuation index (OFI) were both greater in the 60 s:60 s condition (ΣΔ[Formula: see text]: +38% ± 13% and +19% ± 18% vs. 120 s:120 s and 30 s:30 s, P
Databáze: OpenAIRE
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