Built Sports Performance

Built Sports Performance

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01/20/2026

129% GAIN In 10 Weeks ❗️From Force to Flight 🚀: How Caleb’s mRSI Jumped From a .51 to a 1.17.

mRSI (Modified Reactive Strength Index) measures how efficiently an athlete turns their strength into explosive, elastic power // Critical for jumping, sprinting, and reacting on the court.

Caleb came in as a heavy force-based athlete with an MRSi of just 0.51 (bottom 20% of D1 Basketball Athletes). After an individualized propulsive power program targeting velocities and different joint angles, he’s now at 1.17—over double in weeks and now Top 30% in D1 Basketball.)

We’re not like others, we don’t guess. We assess.
We program with precision.🏀💥

This is what happens when you train in a sports science lab where:
✅ Athlete training programs are 100% individualized
✅ We use sports performance technology to remove guesswork
✅ Every session is designed to help you jump higher, move faster, and dominate your sport

If you’re a basketball player, jumping dominate athlete, multi-sport athlete, or parent who wants explosive speed, vertical jump gains, and next-level performance…

📩 Tag a Teammate who needs help with their Vertical ❗️

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2202 W Anklam Rd
Tucson, AZ
85709