Explain types of muscle contraction with example.
Answers
isometric: Of or involving muscular contraction against resistance in which the length of the muscle remains the same.
isotonic: Of or involving muscular contraction against resistance in which the length of the muscle changes. Antonym is isometric. Isotonic movements are either concentric (working muscle shortens) or eccentric (working muscle lengthens).
concentric: (Of a motion), in the direction of contraction of a muscle. (E.g., extension of the lower arm via the elbow joint while contracting the triceps and other elbow extensor muscles.
eccentric: Against or in the opposite direction of contraction of a muscle. (E.g., flexion of the lower arm (bending of the elbow joint) by an external force while contracting the triceps and other elbow extensor muscles to control that movement.