Isometric Exercise is best described as which?

Isometric Exercise is best described as which?

• A. Contraction of the muscle statically without changing its length
• B. Contraction with movement through ROM
• C. Resistance at fixed velocity
• D. Dynamic contractions with joint movement

Answer: (A)

Isometric contraction is a static type of muscle contraction where force is generated without the muscle changing length or the joint angle moving. Isometric exercise uses holds against resistance—like a plank or wall sit—to develop strength at a specific joint position. The other descriptions describe movements through a range of motion or contractions at a constant speed, which involve joint movement, not the static length change seen in isometrics. So the best description is a contraction of the muscle statically without changing its length.

Isometric contraction is a static type of muscle contraction where force is generated without the muscle changing length or the joint angle moving. Isometric exercise uses holds against resistance—like a plank or wall sit—to develop strength at a specific joint position. The other descriptions describe movements through a range of motion or contractions at a constant speed, which involve joint movement, not the static length change seen in isometrics. So the best description is a contraction of the muscle statically without changing its length.