Real-World: Application Time
When landing after a VERTICAL JUMP, 4 real-world actions must be performed in order to increase the application time of the external forces slowing the body down:
(1) initial contact must be on the forefoot
(2) the ankle joints should be maximally plantar flexed prior to contact with the ground
-upon contact with the ground, the ankle plantar flexor muscles should be contracted to create eccentric ankle dorsiflexion torques
(3) the knee joints should be slightly flexed prior to contact with the ground
-upon contact with the ground, the knee extensor muscles should be contracted to create eccentric knee flexion torqes
(4) the hip joints should be slightly flexed prior to contact with the ground
-upon contact with the ground, the hip extensor muscles should be contracted to create eccentric hip flexion torques
When landing after a HORIZONTAL JUMP, initial contact is made with the heels. 3 real-world actions must be performed in order to increase the application time of the external forces slowing the body down:
(1) the ground that you land on should be soft
-this will allow the heels to continue to move while you perform real-world actions 2 and 3.
(2) the knee joints should be slightly flexed prior to contact with the ground
-upon contact with the ground, the knee extensor muscles should be contracted to create eccentric knee flexion torques
(3) the hip joints should be slightly flexed prior to contact with the ground
-upon contact with the ground, the hip extensor muscles should be contracted to create eccentric hip flexion torques