Perceptually regulated exercise test allows determination of VO2max and ventilatory threshold but not respiratory compensation point in trained runners
Deutscher übersetzter Titel: | Perzeptiv regulierter Belastungstest ermöglicht die Bestimmung von VO2max und der Ventilationsschwelle, aber nicht für den Atemkompensationspunkt bei trainierten Läufern |
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Autor: | Truong, Perrine; Millet, Grégoire Paul; Gojanovic, Boris |
Erschienen in: | International journal of sports medicine |
Veröffentlicht: | 39 (2018), 4, S. 304-313, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Elektronische Ressource (online) Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0172-4622, 1439-3964 |
DOI: | 10.1055/s-0043-122741 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU201807004846 |
Quelle: | BISp |
Abstract des Autors
This study aimed to investigate the differences in maximal oxygen uptake (V̇O ) 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 h increment every minute. Ventilatory threshold (VT) and respiratory compensation point (RCP) were determined using ventilatory equivalents. No differences were found in V̇O (68.0 (5.3) vs. 69.5 (5.9) ml·min ·kg , p=0.243), minute ventilation (V̇E) (159.4 (35.0) vs. 162.4 (33.7) l·min , 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- , 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.