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Flexibility - Mobility

Flexibility, mobility and suppleness all mean the range of limb movement around joints. What is flexibility ? Flexibility is the ability to perform a joint action through a range of movement. In any movement there are two groups of muscles at work : * protagonistic muscles which cause the movement to take place and * opposing the movement and determining the amount of flexibility are the antagonistic muscles See the page on muscle movement to find out what happens when you stretch or contract a muscle. Why do flexibility exercises ? The objective of flexibility training is to improve the range of stretch of the antagonistic muscles. What are the benefits ? Flexibility 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. How will I know if I am stretching properly ? 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. What do I need to consider before conducting flexibility exercises ? 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. What types of flexibility exercises are there ? The various techniques of stretching may be grouped as Static, Ballistic, Dynamic, Active, Passive, Isometric and Assisted. Static stretching 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. Example of static stretching exercises. Ballistic stretching Ballistic stretching uses the momentum of a moving body or a limb in an attempt to force it beyond its normal range of motion. Dynamic stretching Dynamic stretching consists of controlled leg and arm swings that take you gently to the limits of your range of motion. Where the event requires a dynamic movement then it is appropriate and perhaps necessary to conduct dynamic stretching exercises. Start off with the movement at half speed for a couple of repetitions and then gradually work up to full speed. Active stretching An active stretch is one where you assume a position and then hold it there with no assistance other than using the strength of your agonist muscles. Active stretching is also referred to as static-active stretching. Passive stretching Passive stretching is also referred to as relaxed stretching, and as static-passive stretching. A passive stretch is one where you assume a position and hold it with some other part of your body, or with the assistance of a partner or some other apparatus. Isometric stretching is a type of static stretching which involves the resistance of muscle groups through isometric contractions (tensing) of the stretched muscles. Assisted stretching 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 stretches 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 breath easily throughout the exercise. Partner assisted stretches are best used as developmental exercises, with each stretch being held for thirty seconds. PNF technique Proprioceptive Neuromuscular Facilitation (PNF) involves the use of muscle contraction before the stretch in an attempt to achieve maximum muscle relaxation. 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.) Which method is best ? Static methods produce far fewer instances of muscle soreness, injury and damage to connective tissues than dynamic or 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 - 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. What order should the flexibility methods be used ? When conducting flexibility exercises it is recommended to perform them in the following order - Static, Assisted and then Dynamic. When should they be performed ? Flexibility exercises could be part of: * the warm up or warm down program * a stand alone unit of work It is considered beneficial to conduct flexibility exercises as part of the warm down program but should not include ballistic or dynamic exercises as the muscles are fatigued and more prone to injury. Static exercise are recommended as they relax the muscles and increase their range of movement. Factors limiting flexibility Internal influences * the type of joint * the internal resistance within a joint * bony structures which limit movement * the temperature of the joint and associated tissues * the elasticity of muscle tissue, tendons, ligaments and skin * the ability of a muscle to relax and contract to achieve the greatest range of movement External influences * the temperature of the place where one is training (a warmer temperature is more conducive to increased flexibility) * the time of day (most people are more flexible in the afternoon than in the morning) * the stage in the recovery process of a joint (or muscle) after * age (pre-adolescents are generally more flexible than adults) * gender (females are generally more flexible than males) * the restrictions of any clothing or equipment * one's ability to perform a particular exercise * one's commitment to achieving flexibilityould inform them that you are an endurance athlete.

 

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