Glucose is used for energy in anaerobic systems related to muscular contraction.
Muscular Power is the Fitness Component tested in Standing Long Jump.
isometric contraction
isometric contraction
A rhythmic muscular contraction in the body is called Peristalsis.
Muscular strength
actin
a cramp or spasm.
tightens
ATP
A painful and involuntary muscular contraction.
Muscular tissue .