Agility or nimbleness is an ability to change the body's position quickly and requires the integration of isolated movement skills using a combination of balance, coordination, speed, reflexes, strength, and endurance. More specifically, it is dependent on these six skills:
- Balance – The ability to maintain equilibrium when stationary or moving (i.e., not to fall over) through the coordinated actions of our sensory functions (eyes, ears and the proprioceptive organs in our joints);
- Static balance – The ability to retain the center of mass above the base of support in a stationary position;
- Dynamic balance – The ability to maintain balance with body movement; an equal distribution of weight;
- Speed – The ability to move all or part of the body quickly;
- Strength – The ability of a muscle or muscle group to overcome a resistance; and lastly,
- Coordination – The ability to control the movement of the body in co-operation with the body's sensory functions (e.g., in catching a ball [ball, hand, and eye coordination]).
In sports, agility is often defined in terms of an individual sport, due to it being an integration of many components each used differently (specific to all sorts of different sports). Sheppard and Young (2006) defined agility as a "rapid whole body movement with change of direction or velocity in response to a stimulus".
