Title :

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

Author(s) :

Combes, Adrien [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369
Dekerle, Jeanne [Auteur]
Bougault, Valerie [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - EA 7369
Daussin, Frédéric [Auteur]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369 - ULR 4488 [URePSSS]
Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369

Journal title :

Journal of sports sciences

Abbreviated title :

J. Sports Sci.

Volume number :

35

Pages :

7-13

Publication date :

2017-01-01

ISSN :

0264-0414

English keyword(s) :

Mesh:Oxygen/metabolism*
Mesh:Male
Mesh:Humans
Mesh:High-Intensity Interval Training
Mesh:Fatigue/metabolism
Mesh:Adult
Mesh:Energy Metabolism/physiology*
Mesh:Exercise Test
Mesh:Exercise/physiology*
Mesh:Young Adult
Mesh:Rest/physiology*
Mesh:Physical Exertion/physiology*
Mesh:Physical Endurance/physiology*
Mesh:Oxygen Consumption*
Mesh:Muscle
Mesh:Skeletal/metabolism
VO2
intermittent exercise
work:rest cycle duration
training prescription
VO2 fluctuations

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

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 ...
Show more >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 < 0.05; OFI: +41% ± 29% and +67% ± 62% vs. 120 s:120 s and 30:30 s, P < 0.05). [Formula: see text] fluctuation analysis was successful in identifying the intermittent condition associated with the greatest disturbances: the 60 s:60 s duty cycle induces more [Formula: see text] fluctuations. The present findings also demonstrate that the selection of the duty cycle duration for submaximal intermittent exercise (70% of WR ) prescription is of interest to produce high [Formula: see text] fluctuations.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Univ. Littoral Côte d’Opale
Univ. Artois
Université de Lille

Collections :

• Unité de Recherche Pluridisciplinaire Sport, Santé, Société (URePSSS) - ULR 7369

Research team(s) :

Activité Physique, Muscle, Santé (APMS)

Submission date :

2019-09-24T07:27:13Z
2019-12-03T10:22:34Z
2019-12-03T10:23:39Z