Drop Jump

It is a strength and power test of the lower limbs, during which the athlete is asked to let himself fall from a standardized height (a few tens of centimeters) and immediately jump as high as he can. The contact time on the ground and the height of the jump are measured, as well as the ratio between the two, named Reactive Strength Index. Moreover, video footage during the test are recorded to identify qualitative deficit during landing and/or propulsive phases.