What is Isolation Exercise?

An Isolation Exercise is an exercise that involves movement at only one joint and is designed to target a specific muscle group in relative isolation. Common examples include the biceps curl (elbow joint only), the leg extension (knee joint only), and the lateral raise (shoulder joint only). While compound lifts are superior for building absolute strength and athletic coordination, isolation movements are valuable tools for targeting weak points, correcting muscular imbalances, and accumulating local volume for hypertrophy without generating high systemic fatigue.