Official protocol by Time4Test Optical Analysis · Explosive Power
Vertical Jump (CMJ)
Estimate vertical jump height and lower-body explosive power from flight time
Primary measureEstimated Height (cm)
CategoryExplosive Power
FormatJUMP_VIDEO
Pacing audioManual / Camera
Standardized testing protocol
Record video of countermovement jump. Select exact take-off and landing frames. The app computes flight time and estimated jump height automatically.
Required field equipment
Smartphone camera with high-frame-rate recording mode
Calculation formula & scoring
Time4Test automates this equation directly during the session:
Estimated Vertical Jump Height (cm) = 100 × (9.80665 × t²) / 8.
Scientific reference
Ballistic flight-time calculation: h = (g × t²) / 8.
Execute in Time4Test
Calibrated acoustic audio cues, live split recording, and instant automated calculation on your smartphone.
Download on Google Play