both of them
Anerobic contraction of muscles.
An asymmetrical contraction of the erector spinae muscles can result in lateral flexion of the spine, where the spine bends to one side.
An imbalance caused by contraction of the pectoralis minor muscle can result in a rounded shoulder position known as forward shoulder posture or kyphosis. Opposing muscles that might be affected by this contraction include the rhomboids and lower trapezius, which become lengthened and weakened, contributing to the postural imbalance.
A hereditary disease of the muscles characterized by prolonged contraction of the muscles whenever voluntary motion is attempted, contraction and relaxation being slow and the muscles stiff.
The general opposite of contraction is expansion, or possibly inflation. For muscles, the opposite of contraction is relaxation.
It isn't just muscles, but the interaction between muscles, ligaments, tendons, nerves, and the bones that permit movement. In muscles only, it's contraction and relaxation, but without the rest involved, the muscles would not result in purposeful movements.
True. A spasm is indeed a sudden, involuntary contraction of one or more muscles. These contractions can occur in various muscles throughout the body and may be caused by factors such as fatigue, dehydration, or irritation. Spasms can range from mild to severe and may result in discomfort or pain.
An involuntary muscle contraction is called a spasm.
Muscles are tissues composed of fibers, the contraction of which produces movement in the body.
muscles, I guess.
prolonged contraction of the muscles