The Single Leg Jump (SLJ) test is the unilateral equivalent of the Countermovement Jump (CMJ). It follows the same test protocols, except it is performed on one leg at a time.
ForceDecks App Protocol
Starting Position
Standing tall on one foot
Hands on hips (if unweighted) or hands on barbell (if weighted)
Chest up and looking forward
Protocol
1. Zero plates - Ensure nothing is touching plates and click "Zero Platforms".
2. Assume starting position - Ask the individual to assume the starting position on the plates.
3. Weigh individual - Click "Measure Weight". The individual must remain completely still, and the colour display must register green before accepting body weight.
4. [OPTIONAL] Enter external load - If applicable, the weight of the external load can be manually added in the ForceDecks software.
5. Stabilise individual - Instruct the individual to remain completely still, in the standing position for 2-3 seconds before, and between each jump in the test.
6. Start recording - Click "Start Recording".
7. Perform jump - Instruct the individual to:
a. Keep the chest up and looking forward;
b. Bend down; then
c. Jump up; then
d. Land softly; then
e. Assume starting position again.
8. Repeat jump - Repeat step 7 to record a total of 3 countermovement jumps.
9. Stop recording - Click "Stop Recording".
10. Review - Review that reps and test type have been detected correctly. If required, you can manually correct the test type and/or manually mark trial ranges.
11. Analyse -Click "Analyse and Save" - to move directly to next individual; or Click "Analyse" – to review results.
