Step-by-step, no fluff.
Practical guides for improving athletic performance and training smarter with measurable data.
Cornerback Backpedal-to-Break Test: Splitting Deceleration From Re-Acceleration Speed
The pro-agility shuttle gives cornerbacks one number. This protocol splits backpedal deceleration from re-acceleration to show where coverage breaks down.
Force Plate Baseline Drift: Zeroing and Tare Fixes for Clean Session Data
Body weight creeping mid-session? Temperature and residual load quietly shift a plate's zero. A field checklist for re-zeroing before it wrecks your data.
Gaelic Football High-Catch Jump Test: Measuring One-Step Approach Reach and Timing
A midfielder's vertical jump can look fine while his high fielding falls apart. The one-step approach reach test that actually measures catch readiness.
How to Measure Hurling Striking Speed with Radar and IMU
Stick head speed alone hides where the power comes from. Learn the radar+IMU protocol to split wrist snap from rotational power, with 2 cited studies.
Golf Clubhead Speed Launch-Monitor Testing: Fixing Placement and Marking Errors for Reliable Data
Clubhead speed swings 4-5 mph between sessions and it's rarely the swing. A launch-monitor placement and club-marking protocol that keeps the number honest.
Why GPS Underreports Sprint Max Speed and How to Fix It
GPS max speed reads low for a reason: sampling rate, smoothing filters, and satellite lock. A control protocol to isolate which one is costing you km/h.
Grip Dynamometer Position Is Skewing Your Readings — Here's the Standardized Fix
Handle span and elbow angle shift grip dynamometer readings by 10-20%. A standardized setup protocol so a retest measures the hand, not the posture.
Gymnastics Vault Run-Up Sprint Test: Measuring the Final 5-Meter Acceleration
Gymnastics vault difficulty tracks final 5m run-up speed, not average pace. Get the timing-gate protocol, elite benchmarks by vault type, and 2 cited studies.
Measuring Arm Velocity in the Handball Wing Shot: Separating Arm Speed from Trunk Rotation
Wing shots can't use the trunk rotation a jump shot uses. See the dual-IMU protocol, contribution bands, and 2 cited studies behind arm velocity share.
Handheld Dynamometer Hip Abduction Test Protocol: Make vs. Break Technique for Reliable Readings
Two testers, one athlete, an 18% gap. The fix: pick make or break, lock the same hip position every retest. Full HHD protocol inside.
Fixing Heart Rate Cadence-Lock Artifacts: How to Diagnose and Break the Sensor Lock
Your wrist HR reads exactly your cadence and won't budge with effort. Here's how to tell a locked optical sensor from a real match, and fix it.
Hop Test Battery for ACL Return-to-Sport: Protocol, Scoring, and Cutoffs
One hop test rarely tells the whole story. Run all four - single, triple, crossover, timed hop - with real LSI cutoffs and where the research draws the line.