CMJ Norms by Age, Sport, and Competition Level
Sourced countermovement jump (CMJ) jump-height norms by age, sport, and competition level, drawn from peer-reviewed force-plate research.
How to Use Force Plates for Return-to-Play Asymmetry Testing
Force plate asymmetry testing for return-to-play: why a single symmetry % is the weakest signal, why single-leg tests expose it, and a lab-free workflow.
How to Test and Calculate Dynamic Strength Index (DSI)
Test and calculate the dynamic strength index on force plates: the CMJ and IMTP protocol, the math, the 0.60 and 0.80 zones, and how to read it.
How to Perform an IMTP Test on a Force Plate
How to run a repeatable IMTP test on a force plate: position setup, cueing, real-time trial vetting, and reading net peak force the right way.
How to Run a CMJ Test on a Force Plate
A field protocol for running a repeatable CMJ test on a force plate: the weighing phase, which jump-height number to trust, and how to read the trend.
Understanding Force-Time Curves: A Coach's Guide
How to read a force-time curve cold: the four landmarks to spot, why impulse beats peak force, and what each curve shape tells you to train.