ForceDecks Test: Countermovement Jump 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.

• Eccentric Peak Velocity [m/s]
• Jump Height (Flight Time) in Inches [in]
• Eccentric Duration [ms]
• Concentric Duration [ms]

• Concentric Mean Force Asymmetry [% L,R]
• Eccentric Mean Force Asymmetry [% L,R]
• Takeoff Peak Force Asymmetry [% L,R]
• Peak Landing Force Asymmetry [% L,R]