
Validity and Reliability of an iPhone and Apple Watch App to Measure Jump Height
For several years, we’ve been publishing data showing that Spleeft is a reliable tool for measuring movement velocity. More recently, we’ve expanded and optimized the

For several years, we’ve been publishing data showing that Spleeft is a reliable tool for measuring movement velocity. More recently, we’ve expanded and optimized the

In this article, I share — from a technical and reflective perspective — the learning and development process behind the latest optimization of the Spleeft

Some weeks ago, we published a proof white paper which explaining everything about our algorithm, the technology behind it and lots of data proving why

INTRODUCTION – Scientific Validity After validating and testing with real users the measurement of running speed with the mobile camera (you can read the presentation

INTRODUCTION Quantifying movement velocity is the only way to control intensity and level of effort at the gym. Each velocity is hugely correlated with a

If strength is your engine size, VO₂ max is the size of your fuel pump. You can bolt on all the power you want in

Overspeed training has a certain mystique. The first time an athlete clips into a towing system or an assisted treadmill and suddenly finds themselves running

You step on the mound, take a breath, and let one rip. The gun flashes a number that’s… fine. Not bad. But not the number

You walk into a powerlifting meet and immediately notice two worlds colliding. One side has lifters in singlets, belts, and sleeves—raw powerlifting warriors grinding out

You unrack a heavy squat that should be routine. On paper it’s 85%—nothing heroic—but today it feels like a house. You grind out three ugly reps, stare

You rush into the gym, maybe do 30 seconds of light jogging, and jump straight into your main lift. Sound familiar? Most people treat warm up
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