Muscle length is what doesn't change, so the variable would be the amount of force exerted on the muscle.
An isometric contraction builds tension but there is no joint movement.
An isometric contraction is when the muscle does not shorten and no movement results.
Isometric contraction
An Isotonic muscle contraction is a muscle contraction that makes your limbs move whereas an Isometric contraction is a muscle contraction where the limbs stay static
isometric contraction
during isometric contraction, the energy used appears as movement
isometric contraction
no
Isometric Contraction :]
Isometric
Yes.
If the muscle can not shorten because the muscle is trying to move a load that is greater than the force, then the contraction is isometric.