concentric, eccentric and isometric contractions

Question 1

Isometric

Answer 1

– muscle does not change length E.g. Pushing against a door or holding a weight at shoulder height

Question 2

Isotonic

Answer 2

muscle changes length when contracting.

Question 3

Concentric

Answer 3

muscle shortens when contracting E.g. push up (pectorals)

Question 4

Eccentric

Answer 4

– muscle lengthens when contracting
E.g. going from a sit up position to lying flat (Abdominals).