Muscle Action Spectrum

Question 1

Concentric

Answer 1

SHORTENS Muscle Length

Ex) Calf raise

Question 2

Isometric

Answer 2

MAINTAINS muscle length

Ex) when exercise is being held still

Question 3

Eccentric

Answer 3

LENGTHENS muscle

Ex) Lowering the arm after bicep curl, the bicep eccentrically decelerate elbow extension