Figure 1.

Comparison of three training protocols in terms of speed and speed variations. (A) The UC protocol was 13 RPM for 1,560 sec (26 min). (B) The VC protocol consisted of two series of 480 sec (8 min) of inversion bi-pyramidal exercise and an active recovery of 120 sec (2 min) at RPM between the two series, with a total training length of 18 min. (C) The PC protocol was based on incremental speed changes with a gradually increasing intensity of exercise. The intensity increased in 2 RPM intervals from 10 RPM to 32 RPM with 12 speed changes, for a total of 1080 sec (18 min) of training. UC, uniform continuous; VC, varying continuous; PC, progressive continuous.