Investigating the reproducibility of maximal oxygen uptake responses to high-intensity interval training

Objectives To test the hypothesis that observed maximal oxygen uptake (VO2max) and time to fatigue (TTF) responses to two identical periods of standardized high-intensity interval training are reproducible. Design Fourteen recreationally active and healthy young males completed two identical four-week periods of high-intensity interval training (4 × 4-min intervals at 90–95% maximum heart rate [HRmax] separated by 3-min periods of active...