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What is the difference between isotonic and isometric muscle contractions?

2 doctors weighed in
Dr. Audie Rolnick
Orthopedic Surgery
1 doctor agrees

In brief: See below

isometric muscle contraction is without joint motion.
for example a quad set where you tighten the muscle in a fixed position. isotonic involves joint rom with a resistance at the end of the fulcrum(for example lifting an ankle weight while extending the knee joint)

In brief: See below

isometric muscle contraction is without joint motion.
for example a quad set where you tighten the muscle in a fixed position. isotonic involves joint rom with a resistance at the end of the fulcrum(for example lifting an ankle weight while extending the knee joint)
Dr. Audie Rolnick
Dr. Audie Rolnick
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