40161 Muscle Contractions – Definitions

Hypertonia Excessive muscle tone
Hypotonia Below normal muscle tone
Iso The same
Tonic Holding tone or tension
Concentric Towards the middle (of the muscle)
Eccentric Away from the middle (of the muscle)
Kinetic Moving
Isotonic contractions A muscle contraction in which the tension within the muscle does not change
Isotonic Concentric Contraction A muscle contraction where a muscle shortens as it contracts
Isokinetic Contraction A muscle contraction in which the speed of the movement stays the same
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