Mobility is the ability to perform a joint action through a range of movement. In any movement there are two groups of muscles at work:

• protagonist muscles which cause the movement to take place
• opposing the movement and determining the amount of mobility are the antagonistic muscles

The objective of mobility training is to improve the range of stretch of the antagonistic muscles. Mobility plays an important part in the preparation of athletes by developing a range of movement to allow technical development and assisting in the prevention of injury. When you perform a stretch correctly you will feel mild discomfort in the antagonistic muscles. If you feel pain or a stabbing sensation you must STOP. The body responds best to a stretching program when it is warm and the muscles and joints have been exercised through their current range of movement. The various techniques of stretching may be grouped as Static, Ballistic and Assisted. In both Static and Ballistic exercises the athlete is in control of the movements. In Assisted the movement is controlled by an external force which is usually a partner.

Static stretching involves gradually easing into the stretch position and holding the position. The amount of time a static stretch is held may be anything from 6 seconds to 2 minutes. Often in static stretching you are advised to move further into the stretch position as the stretch sensation subsides.

Ballistic stretching involves some form of rapid movement into the required stretch position. Where the event requires a ballistic movement then it is appropriate and perhaps necessary to conduct these exercises. Start off with the movement at half speed for a couple of repetitions and then gradually work up to full speed.

Assisted stretching involves the assistance of a partner who must fully understand what their role is otherwise the risk of injury is high. A partner can be employed to assist with Partner stretches and Proprioceptive Neuromuscular Facilitation (PNF) techniques.

Partner stretching is when your partner assists you to maintain the stretch position or help you ease into the stretch position as the sensation of stretch subsides. You should aim to be full relaxed and breathe easily throughout the exercise. Partner assisted stretches are best used as developmental exercises, with each stretch being held for thirty seconds.

1. You move into the stretch position so that you feel the stretch sensation
2. Your partner holds the limb in this stretched position
3. You then push against your partner by contracting the antagonistic muscles for 6 to 10 seconds and then relax. During the contraction your partner aims to resist any movement of the limb.
4. Your partner then moves the limb further into the stretch until you feel the stretch sensation
5. Go back to 2. (repeat this procedure 3 or 4 times before the stretch is released.)

Static methods produce far fewer instances of muscle soreness, injury and damage to connective tissues than ballistic methods. Static methods are simple to carry out and may be conducted virtually anywhere. For maximum gains in flexibility in the shortest possible time PNF technique is the most appropriate. Dynamic (ballistic) - slowed controlled movements through the full range of the motion - will reduce muscle stiffness. Where the technique requires ballistic movement then ballistic stretches should be employed.

When conducting mobility exercises it is recommended to perform them in the following order - Static, assisted and then dynamic.

Mobility exercises could be part of:

• the warm up program
• a stand alone unit of work

It is considered beneficial to conduct mobility exercises as part of the warm down program but should not include ballistic exercises as the muscles are fatigued and more prone to injury. Static exercises are recommended as they relax the muscles and increase their range of movement.

All athletes require a basic level of general all round mobility to allow them to benefit from other forms of training. Identify a selection of exercises and then put a program together for your athletes.