The metabolic profiles of different fiber type populations under the emergence of the slow component of oxygen uptake.

Details

Serval ID
serval:BIB_DF3969769ED4
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
The metabolic profiles of different fiber type populations under the emergence of the slow component of oxygen uptake.
Journal
The journal of physiological sciences
Author(s)
Conde Alonso S., Gajanand T., Ramos J.S., Antonietti J.P., Borrani F.
ISSN
1880-6562 (Electronic)
ISSN-L
1880-6546
Publication state
Published
Issued date
28/05/2020
Peer-reviewed
Oui
Volume
70
Number
1
Pages
27
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
To investigate the influence of different metabolic muscle fiber profiles on the emergence of the slow component of oxygen uptake ([Formula: see text] <sub>SC</sub> ), 12 habitually active males completed four sessions of different combinations of work-to-work transition exercises up to severe intensity. Each transition was modeled to analyze the different kinetic parameters. Using a new approach, combining Henneman's principle and superposition principle, a reconstructed kinetics was built by temporally aligning the start of each new transition and summing them. The primary phase time constant significantly slowed and the gain at the end (GainEnd) significantly increased when transitions started from a higher intensity (p < 0.001). Kinetic parameters from the reconstructed curve ([Formula: see text], time delay of primary phase, [Formula: see text]End and GainEnd) were not significantly different from one transition to severe exercise. These results suggest that the appearance of the [Formula: see text] <sub>SC</sub> is at least related to, if not the result of, the different metabolic properties of muscle fibers.
Keywords
Adolescent, Adult, Exercise, Humans, Kinetics, Male, Metabolome, Middle Aged, Muscle Fibers, Skeletal/metabolism, Oxygen/metabolism, Oxygen Consumption/physiology, Young Adult, Muscle fatigue, Muscle fibers’ metabolic properties, Oxygen consumption kinetics, Slow component
Pubmed
Web of science
Open Access
Yes
Create date
29/05/2020 8:18
Last modification date
30/05/2021 5:35
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