Int J Sports Med 2018; 39(04): 304-313
DOI: 10.1055/s-0043-122741
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

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

Perrine Truong
University of Lausanne, Faculty of Biology and Medicine, Lausanne, Switzerland
Gregoire P. Millet
University of Lausanne, Institute of Sport Sciences ISSUL, Faculty of Biology and Medicine, Lausanne, Switzerland
Boris Gojanovic
Hopital de la Tour, Swiss Olympic Medical Center, Meyrin, Switzerland
Swiss Federal Institute for Sport (BASPO), Magglingen, Switzerland
Sports Medicine Unit, Department of Human Locomotion, Lausanne University Hospital CHUV, Lausanne, Switzerland.
› Author Affiliations
Further Information

Publication History

accepted 24 October 2017

Publication Date:
23 February 2018 (eFirst)


This study aimed to investigate the differences in maximal oxygen uptake (V̇O2max) 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−1 increment every minute. Ventilatory threshold (VT) and respiratory compensation point (RCP) were determined using ventilatory equivalents. No differences were found in V̇O2max (68.0 (5.3) vs. 69.5 (5.9) ml·min−1·kg−1, p=0.243), minute ventilation (V̇E) (159.4 (35.0) vs. 162.4 (33.7) l·min−1, 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-1, 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.