Figure 2.

Mean heart rate at rest (T1), during the first half of the simulated combat (T2), during the rest period (T3) and during the second half (T4) in the beginning (pre-intervention) and at the end (post-intervention) of the preparatory period.

The symbols *, †, ‡ and § denote a significant difference among T1, T2, T3 and T4, respectively, whereas ¥ denotes a difference between pre-intervention and post-intervention.