Cardiopulmonary exercise test
Participants performed a maximal cardiopulmonary exercise test (CPET) on a treadmill, following a stepwise protocol with increments of speed and incline every 3 min. Initial workload and workload increments were set according to participants’ perceived fitness estimated based on an initial familiarization with the treadmill ~1 h before the CPET. During the CPET, oxygen consumption (VO