Training protocol and training monitoring
HIT
The participants performed six sessions in three days, where the first session was the GXT. The anti-meridian (AM) sessions start between 08:30 AM and 01:00 post-meridian (PM), while the PM sessions start between 02:00 and 07:00 PM. The HIT sessions were designed with the aim of overexercising participants who had no experience with the HIT method or the twice-daily sessions. Each HIT session was performed as group cycling training (5 members per group) by projecting the day’s session schedule on the wall in real-time. Specifically, we planned two formats: short intervals, alternating intervals with power above threshold (110-150%), and recovery intervals at intensities between 30 and 40% VO