Subjects
Forty‐eight healthy non‐smoking males volunteered to participate in the present study. Females were not invited to participate to ensure homogeneity of physiological factors and baseline training status. The subjects were aerobically well‐trained and relatively accustomed to treadmill running, but not specialized runners nor engaged in long‐distance or sprint running competitions or trainings. They were randomized into three training groups: HIIT 4 × 4 min, SIT 8 × 20 s, or SIT 10 × 30 s (Figure Flow chart of the study.Subjects' descriptive data.
