Isotonic contraction

Isotonic contraction is a type of muscle contraction in which the muscle changes in length while maintaining a constant tension. It is one of the ways that the body moves and exercises. Isotonic contractions are divided into two types: concentric and eccentric.

Types of Isotonic Contraction

Concentric Contraction

In a concentric contraction, the muscle shortens as it contracts. This type of contraction is common in most physical activities, including lifting weights and running.

Eccentric Contraction

An eccentric contraction is a type of muscle activation that increases tension on a muscle as it lengthens. Eccentric contractions typically occur when a muscle opposes a stronger force, which causes the muscle to lengthen as it contracts.

Physiology

During an isotonic contraction, the muscle tension remains the same, but the muscle's length changes. Isotonic contractions differ from isometric contractions, in which the muscle's length remains the same and the tension changes.

Clinical Significance

Understanding isotonic contractions is important in the field of physical therapy. Therapists often use exercises that involve isotonic contractions to help patients recover from injuries and improve their strength and mobility.

See Also

• Muscle contraction
• Isometric contraction
• Concentric contraction
• Eccentric contraction

References

Isotonic contraction Resources
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