ForceDecks Test: Drop Jump Protocol

ForceDecks App Protocol

Starting Position
  • Standing on box or elevated platform, immediately behind force plates
  • Normal standing posture
  • Hands on hips
  • Chest up and looking forward
  1. Zero plates – Ensure nothing is touching plates and click "Zero Platforms".
  2. Step on plates – Ask individual to step 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. Assume starting position – Ask individual to assume starting position.
  5. Start Recording – Click "Start Recording”.
  6. Perform jump - Instruct the individual to:
    1. Keep chest up and looking forward;
    2. Step off the box; then
    3. Land on the plates with both feet at the same time; then
    4. Immediately jump as high as possible; then
    5. Land softly, remaining completely still on the plates for 2-3 seconds; then
    6. Assume the starting position again.
  7. Repeat jump – Repeat steps 4 and 6 to record a total of 3 drop jumps.
  8. Stop recording – Click "Stop Recording".
  9. Review – Review that reps and test type have been detected correctly.  You can manually correct the test type and/or manually mark trial ranges, if required.
  10. Analyse Click "Analyse and Save" - to move directly to next individual; or Click "Analyse" – to review results.
Reps 1 - 100 reps
Default Instant Results


  • Contact Time
  • RSI (JH (Flight Time)/Contact Time) [m/s]
  • Peak Takeoff Acceleration [m/s2]
  • Jump Height (Flight Time) [cm]

  • Peak Landing Force Asymmetry [% L,R]
  • Landing RFD Asymmetry [% L,R]

Related Article: ForceDecks Test: Drop Jump Overview