Perceptually Regulated Exercise Test Allows Determination of V˙O2max and Ventilatory Threshold But Not Respiratory Compensation Point In Trained Runners.

Details

Serval ID
serval:BIB_D1DFDB43F6DA
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Perceptually Regulated Exercise Test Allows Determination of V˙O2max and Ventilatory Threshold But Not Respiratory Compensation Point In Trained Runners.
Journal
International journal of sports medicine
Author(s)
Truong P., Millet G.P., Gojanovic B.
ISSN
1439-3964 (Electronic)
ISSN-L
0172-4622
Publication state
Published
Issued date
04/2018
Peer-reviewed
Oui
Volume
39
Number
4
Pages
304-313
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
This study aimed to investigate the differences in maximal oxygen uptake (V̇O <sub>2max</sub> ) and submaximal thresholds between a standard graded exercise test (GXT) and a perceptually regulated graded exercise test (PRGXT) in trained runners. Eleven well-trained middle- to long-distance runners performed both tests in a randomized order. PRGXT used incremental "clamps" of rating of perceived exertion (RPE) over 10×1-min stages on an automated treadmill equipped with a sonar sensor allowing them to change their running speed instantly and in a natural way. GXT used fixed 1 km <sup>.</sup> h <sup>-1</sup> increment every minute. Ventilatory threshold (VT) and respiratory compensation point (RCP) were determined using ventilatory equivalents. No differences were found in V̇O <sub>2max</sub> (68.0 (5.3) vs. 69.5 (5.9) ml·min <sup>-1</sup> ·kg <sup>-1</sup> , p=0.243), minute ventilation (V̇E) (159.4 (35.0) vs. 162.4 (33.7) l·min <sup>-1</sup> , p=0.175), heart rate (HR) (188.4 (6.9) vs. 190.7 (5.2) bpm, p=0.254) and speed (21.0 (1.7) vs. 21.1 (2.3) km·h- <sup>1</sup> , p=0.761) between GXT and PRGXT. At VT, there were no significant differences between GXT and PRGXT for any outcome variables. For 8 of 11 subjects, it was not possible to determine RCP from ventilatory equivalent in PRGXT. GXT appears more relevant for a comprehensive gas analysis in trained runners.

Keywords
Adult, Anaerobic Threshold/physiology, Exercise Test/methods, Female, Heart Rate/physiology, Humans, Male, Oxygen Consumption/physiology, Perception/physiology, Physical Exertion/physiology, Respiration, Running/physiology, Young Adult
Pubmed
Web of science
Create date
08/03/2018 18:40
Last modification date
20/08/2019 16:52
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