Step-by-step, no fluff.
Practical guides for improving athletic performance and training smarter with measurable data.
Anaerobic Shuttle Capacity Test Protocol: Setup, Scoring, and Team-Sport Norms
Your beep test says they're fit. Their fourth cut says otherwise. A 6x20m anaerobic shuttle protocol with work:rest ratios, fatigue index math, and norms.
Fixing Bar Velocity Spikes From Bouncing: How to Spot and Filter the Artifact
A single rep reads 1.4 m/s and wrecks your average. Learn why bounced reps and bar drops spike bar velocity readings, and how to filter the artifact out.
How to Measure Pitcher Arm-Slot Consistency with IMU: Catching Fatigue Before Velocity Drops
Arm slot drifts before velocity does. Learn the wrist-IMU protocol, drift thresholds, and 2 cited studies behind catching pitcher fatigue early.
Fixing Inconsistent Baseball Spin-Rate Tracking
Spin rate swinging pitch to pitch usually isn't the arm. Lighting, ball wear, and missed release capture skew readings - here's the fix protocol.
Basketball Repeat Rebound Jump Decrement Test: Protocol, Formulas, and Norms
Ten straight max rebound jumps expose how much height a player loses to fatigue. Get the basketball decrement test protocol, the formula, and benchmark ranges.
Biathlon Shooting Stability Under Fatigue: A Post-Ski IMU Sway Test Protocol
Test rifle stability right after skiing, at 85%+ max heart rate. A muzzle-sway IMU protocol, position norms, and 2 cited biathlon studies with limitations.
How to Measure BMX Gate Start Power: A Crank and IMU Protocol for the First Three Pedal Strokes
BMX gate starts are decided in 3 pedal strokes. Get the crank+IMU protocol, power benchmarks, and 2 cited studies behind measuring the first-stroke burst.
The Bouldering Lock-Off Test: Measuring Static Hold Time Across Elbow Angles
Most lock-off failures aren't a finger problem. This protocol times static holds at four elbow angles to find exactly where a climber's lock breaks down.
Braking Force and Deceleration Field Test Protocol: Equipment, Steps, and Cutoffs
Sprint speed gets tested every combine day. Braking rarely does. A low-cost field protocol to quantify horizontal braking force, with cutoffs and math.
The Calf Endurance Heel Raise Test for Achilles: Single-Leg Rep Norms and Reinjury Risk Screening
Single-leg heel raise reps predict Achilles reinjury risk better than a pain scale. Field protocol, rep norms, LSI cutoffs, and the studies behind them.
Canoe Slalom Reverse Gate Power Test: Measuring Deceleration-to-Reacceleration Burst
Canoe slalom power test data hides in the reverse gate. Measure the deceleration-to-reacceleration stroke burst with a field IMU protocol and 2 cited studies.
Concussion Baseline Balance Testing Protocol: Equipment, Steps, and Return-to-Play Cutoffs
Team norms miss individual deficits. A preseason BESS baseline protocol with scoring steps, the practice-effect fix, and return-to-play interpretation.