Exercise Test Execution Protocol
CARDIOPULMONARY
Exercise testing occurred between 8:00 and 10:00 am in an air-conditioned exercise testing laboratory, 2 h after eating a light breakfast. The Cardiopulmonary Exercise Test (CPET) test was performed on a cycloergometer: a 3 min warm-up with a load of 25 watts, after which, the load was increased by 10 watts (60 RPM) every 90 s. The test continued until the subject refused or was unable to maintain the set cadence. A physician was present in the laboratory during the exercise test in each case.