jump testing
How to Measure Trampoline Time of Flight with an IMU on a Training Mat
Trampoline time of flight decides your score. Learn the IMU protocol for matching competition ToF on a training mat, plus real norms and consistency checks.
RSI-Modified Explained: The Countermovement Jump Reactive Metric
Your CMJ height looks fine, but something's off in the timing. RSImod explains why — the formula, protocol, real research findings, and common testing errors.
How to Run Accurate Vertical Jump Testing
Bent knees or arm swing variance can shift your CMJ number by centimeters. Get the standardized setup, warm-up, and norm tables that remove the guesswork.
Vertical Jump Height Norms by Age, Sex & Sport
Vertical jump height norms by position, not just sport: NBA guard vs. center, NFL skill vs. line, plus every age bracket from 10 to 54 years.
Countermovement Jump Test: Complete Protocol & Norms
Complete CMJ test guide: standardized protocol, force-time curve interpretation, normative data by sport and sex, and how to use CMJ for fatigue.