The Countermovement Jump (CMJ) is a commonly used test in sports science and strength and conditioning to assess lower-body power. Here’s a breakdown of what it is and why we look at it: ⸻ 🔍 What the CMJ Assesses 1. Lower-Body Power The CMJ measures how effectively an athlete can generate force within a limited timeframe — a key component of a powerful golf swing. 2. Stretch–Shortening Cycle (SSC) It evaluates how well the muscles and tendons store and release elastic energy. 3. Neuromuscular F