10/11/2018
with
・・・
This week’s infographic series will be focused on the Box Jump. This is a plyometric exercise we use for power development. With plyometric progressions, we will typically progress from lowest level of eccentric stress to highest level of eccentric stress. This is a great beginner variation because the box takes out the impact force of landing (eccentric stress), while teaching the athlete how to express force in to the ground.
•
Technique-wise, the bottom position of your jump is the loading position of your ankle, knee, and hip (triple flexion). It is best to try and get equal load sharing of the ankle, knee, and hip for maximal power.
•
On the left, there is too much load with the ankles and knees. There is less hip involvement and a greater forward weight shift. You will often see someone knee tuck on to the box with this type of loading position.
•
In the middle image, there is too much hip load and not enough use of the ankles and knees. You will often see a greater weight shift backwards and a rocking motion with the jump in this scenario.
•
On the right, there is more equal load sharing of the ankle, knee, and hip. The weight is more balanced, allowing the ability to work down into the ground so that true vertical force can be expressed into triple extension.
•
Content, copy and demonstration by .