Heart rate (HR) parameters before (Pre), during (Routine), and after (Post) the competitive routines for junior category.

Data are mean ± SD (beats·min−1). TS, Technical Solo; FS, Free Solo; TD, Technical Duet; FD, Free Duet; TT, Technical Team; FT, Free Team. HRpre, last minute before routine; HRpeak, HRmean, HRmin, HRrange: peak, mean, minimum, and range values during routine; HRpost1, HRpost3, HRpost5: first, third and fifth minutes during recovery.