Tag · 4 articles
ground contact time
guides·9 min read
The Cadence Threshold Where Race Walking Economy Starts to Break Down
Push cadence too far in race walking and economy costs rise before the legality benefit does. See the research and a protocol for finding your own threshold.
race-walking·cadence·running-economy
how to·9 min read
How to Measure Ground Contact Time with an IMU Sensor
Ground contact time separates elite sprinters from the rest by milliseconds. See the foot-sensor thresholds, sprint norms, and force-plate accuracy data.
ground-contact-time·imu·sprint-mechanics
exercises·8 min read
Ground Contact Time in Plyometric Training: How to Measure and Minimize It
How to measure and reduce ground contact time in plyometric drills to maximize reactive strength, speed, and sport performance with IMU-based testing.
ground-contact-time·plyometrics·reactive-strength
guides·10 min read
Reactive Strength Index (RSI): Complete Training Guide
There is no single good RSI score; the benchmark shifts by position. Covers measurement, position norms, ground-contact protocols, and progress tracking.
RSI·reactive-strength·plyometrics