Power (jump height)
All vertical jumps were performed using an optical measurement system (Optojump, Microgate®, Bolzano, Italy). A software program recorded jump height based on flight time. In order to ensure the validity of the test, participants were asked to have their knees as fully ex- tended as possible and their ankles completely plantar- flexed on both take-off and landing. Participants stood with their feet shoulder width apart and flat on the con- tact mat. The best jump from three attempts was re- corded for both squat jumps (SJ) and countermovement jumps (CMJ). A 1-min recovery was provided between all jump trials. For both jump measurements, partici- pants stood feet flat on the contact mat with hands on hips (no arm swing). For SJ measurements, participants held their knees flexed at 90° for two seconds, and were then told to jump as high as possible, avoiding the use of a stretch-shortening cycle as for CMJ. No specific in- structions were given about the depth or speed of the countermovement for the CMJ test.
Power (jump height)All vertical jumps were performed using an optical measurement system (Optojump, Microgate®, Bolzano, Italy). A software program recorded jump height based on flight time. In order to ensure the validity of the test, participants were asked to have their knees as fully ex- tended as possible and their ankles completely plantar- flexed on both take-off and landing. Participants stood with their feet shoulder width apart and flat on the con- tact mat. The best jump from three attempts was re- corded for both squat jumps (SJ) and countermovement jumps (CMJ). A 1-min recovery was provided between all jump trials. For both jump measurements, partici- pants stood feet flat on the contact mat with hands on hips (no arm swing). For SJ measurements, participants held their knees flexed at 90° for two seconds, and were then told to jump as high as possible, avoiding the use of a stretch-shortening cycle as for CMJ. No specific in- structions were given about the depth or speed of the countermovement for the CMJ test.
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