Active / passive insufficiency of muscle

Active Insufficiency :
- Its mean Poor Lengthening of the angonist muscle
- Example (i):
When bend the wrist ( flexion the wrist ) and bend the elbow ( flexion the elbow ), its hard to make a fist of the hand.It is because the length of the angonis muscle ( flexor ) is not sufficient.

Passive insufficiency :
- Its mean Poor Lenghtening of the antagonist muscle
- Example (i):
Make a fist of the hand first, and then bend the wrist and elbow. The fist will be weak. Its is because of pulling back of antagonist muscle for fist.