From the earlier mnemonics we can see that:
Iso = Constant
Metric = Measure of the distance moved
Contraction = Tension
From this we can understand that:
Isometric contraction is -
- Constant distance
- muscle in tension
Isometric contraction = Muscle tension where the length of the muscle does not alter
Isometric contractions occur when you:
1. Push against a load but the load doesn't move.
2.Pull a door that won't open.
3. It also includes any type of exercise that holds the body in one position for the duration of the exercise. An example would be holding plank.