Question

In a countermovement jump, why is there a need to know the net vertical impulse (absolute impulse) and the jumping impulse (relative impulse)? What is the relationship between these 2?

Answer 1

Ans . Countermovement jump :- The countermovement jump is primarily used to measure an athlete's explosive lower - body power and has become one of the most frequently used tests by coaches and researchers to indirectly measure power in the lower limbs. This test can be conducted either with, or without the use of the arm - swing.

Relative net vertical impulse determines the jumping performance.

A larger Countermovement jump induces an increase in the net vertical impulse, leading to a higher jump height. In addition, the maximum downward velocity was higher, when the countermovement depth is higher.