Fig. 2.

Representative training schedules for HIIT and MICT programs in phase II cardiac rehabilitation. While variations in both HIIT and MICT exist, common approaches include 4 high intensity intervals, interspersed with moderate-intensity active recovery periods. As shown, both HIIT and MICT programs shorten the warm-up and cool-down periods of an equivalent duration. While some programs shorten the warm-up and cool-down duration in the MICT protocol to match the total duration of the corresponding HIIT program, most examples within the literature reflect a time savings for patients assigned to the high-intensity protocol.