2.5. Countermovement Jumps

This test consisted of three maximal CMJ on a force plate (Leonardo GRFP, Novotec medical GmbH, Pforzheim, Germany). Before the first test, all participants were shown and practiced the correct execution of the jump. They were asked to “quickly drop to a half-squat position and then immediately jump as high as possible” (with hands akimbo). A 1-min of rest was given between each jump. Data acquisition and analysis for all tests on the force plate (i.e., reactive hops, CMJ) were performed with Leonardo Mechanography software (version 4.3b01.93, Novotec Medical GmbH, Pforzheim, Germany) and barefoot on the same force plate. Ground reaction forces were sampled and recorded at 800 Hz. The maximal jump height (cm) and jump peak power (W/kg) were extracted and used for further analyses as the mean of all three jumps (Avg) and the highest height or the highest peak power value of the session (Hv).