![]() Isometric contractions occur when tension increases but the muscle remains at a constant length. Isotonic contractions occur when muscles become shorter or longer against resistance, and tension remains the same. There are two types of muscle contraction: isotonic and isometric. By applying constant tension to the muscles, isometric exercises can be useful for improving physical endurance and posture by strengthening and stabilizing the muscles. ![]() Isometric exercises place tension on particular muscles without moving the surrounding joints. ![]() Share on Pinterest Image credit: Andrey_Popov / Shutterstock.
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