Applied anatomy and physiology

Paper 1 - Muscular, Skeletal, Cardiovascular and Respiratory Systems

Aerobic work

Working at a moderate intensity so that the body has time to use oxygen for energy production and can work for a continuous period of time. For example, long-distance events, for the duration of a match.

Agonist

The muscle within the pair that, at a given time, is contracting to pull on the bone and produce movement.

Anaerobic work

Working at a high intensity without oxygen for energy production. The work period will be short in duration, because the energy is limited. For example, sprinting up the wing in a football match.

Antagonist

The muscle within the pair that, at a given time, is relaxing to allow movement to occur.