Zero plates - Zero the plates. Ensure nothing is touching the plates during this step.
Assume starting position - Ask the individual to assume the starting position on the plates.
Weigh individual - Measure the individual's weight.
Stabilise individual - Instruct the individual to remain completely still, in the starting position for 2-3 seconds before and between each rep in the test.
Important: ensure there is no downward movement from the starting position.
Perform test - Instruct the individual to:
Keep the chest up and looking forward;
Jump up; then
Land softly; then
Assume starting position again.
Repeat - Repeat step 5 to record the desired number of reps.
Complete the test - Click to stop the recording and check the results.
Test overview
The Squat Jump (SJ) test is used to evaluate triple extension performance by isolating the concentric phase of a jump.
The SJ is a highly effective test to determine an athlete's reliance on eccentric loading (i.e. the stretch-shortening cycle) to achieve maximal performance output. The protocol is very strict and must be performed precisely to ensure correct software detection and accurate results.
The goal of the SJ is to jump as high as possible.
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