Reactive strength index chart
What gFlight does, is it measures jump height (time in air), ground contact time, and reactive strength index (RSI). So, instead of having athletes jump on a box 25 Jun 2015 and the use of the reactive strength index as a monitoring tool. reactive strength index (RSI) calculated from a drop jump in professional Graph B – the shaded area represents the ICCα ≥ 0.80 cut off value to determine