muscular contractions

Question 1

Isometric contractions

Answer 1

Muscles that DO NOT create movement.
When the muscle contacts without lengthening or shortening.
e.g in gymnastics holding a handstand

Question 2

isometric contractions

Answer 2

muscles that DO create movement.
The muscle changes it shape (lengthens and shortens) - through contraction.

Question 3

Concentric contractions

Answer 3

when the muscle shortens under tension. e.g upwards phase of a bicep curl

Question 4

eccentric contractions

Answer 4

when the muscle lengthens under tension. e.g downwards phase of a bicep curl. (acts as a break to help control the movement of the body part)