measurement
Standing Broad Jump: Measuring It the Same Way Every Time
Standing broad jump measurement drifts without a locked toe-line, heel-mark, and landing protocol, backed by real reliability data.
How to Test Barbell Acceleration with an Attached IMU: Placement, Axis Calibration, and 7 Key...
Velocity alone hides how a lift accelerates. This 7-step protocol covers IMU placement, axis calibration, and the metrics that reveal bar speed changes.
How to Train Your Weak Side: A Step-by-Step Guide to Fixing Asymmetry
A 10% left-right strength gap raises injury risk by 1.5x. Here is the test, diagnose, and correct protocol coaches use to close that gap for good.
Home Gym Essential Equipment: Top 10 Real Needs vs Marketing
70% of home gym owners resell half their gear within a year. The 10 pieces worth buying, split into 3 ROI tiers, not the ones that look good on camera.
How to Measure Power Output: Methods, Metrics, and Practical Testing
Force plates, LPTs, IMU sensors, and field tests measure power output differently. Compare accuracy and cost, then pick the protocol that fits your gym.
How to Measure Range of Motion: Methods, Tools, and Practical Protocols for Athletes
Goniometry, IMU sensors, and video analysis all measure ROM, but not equally well. Compare accuracy by joint against real protocols and normative values.
How to Measure Your Vertical Jump at Home: 3 Reliable Methods
Wall-chalk, smartphone video, or an IMU sensor each measures vertical jump differently. Compare accuracy, setup, and errors that skew results.
Jump Height Measurement Methods: Flight Time vs Force Plate
The h = g x t^2/8 formula assumes equal takeoff and landing height. Hip pike and knee bend break that and skew results 1-3cm. IMU validation data inside.