Relative Strength Index (RSI) Calculator

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Evaluate jump power and reactive capacity based on jump height and ground contact time.

Jump Height (cm)

Ground Contact Time (seconds)

Understanding the Stretch-Shortening Cycle (SSC)

The **Reactive Strength Index (RSI)** is a plyometric assessment metric. It evaluates an athlete's ability to rapidly transition from an eccentric contraction (landing/absorbing force) to a concentric contraction (takeoff/generating force). High RSI indicators point to optimal nervous system firing and Achilles tendon spring capacity.

Sıkça Sorulan Sorular

Typically measured using force plates, contact mats, or video analysis software.

Incorporate progressive plyometrics like depth jumps, hurdle bounds, and explosive calf loading.