SUCCESS at last year's Commonwealth Games was about more that winning medals and putting on the best-ever Games.

It was also about the regeneration of our city, increasing long-term jobs, boosting tourism - in other words, legacy.

With the obesity epidemic in our children already here, our legacy hopes should also include an aspiration to increase the physical activity in our young people.

Sport and physical activity has been proven to have so many physical, emotional and social benefits, it has been described by some as the ideal "pill" to ensure a long and healthy life.

One of the many facets of the health benefits and one where our elite athletes can be important role models, is the drive to improve nutrition in both school and home.

A healthy eating programme is accepted in professional sport as part of the normal preparation for competition. Indeed, sports nutrition input is seen as essential a part of a sports "backroom team" as physiotherapy or strength and conditioning.

Regardless of how much training an athlete does, or how good the coaching system is, unless they give their body the optimum balance of essential nutrients, they will never reach their full potential.

High-intensity sporting activity depletes the limited energy stored in the muscles, mainly in the form of glycogen.

Poor nutritional preparation will lead to faster glycogen depletion with fatigue and, in turn, a reduction in performance.

In order to maintain adequate energy stores, athletes require to take on board sufficient carbohydrates and to replenish these stores throughout the day.

Traditionally, pre-competition meals are timed for around three hours before the event. Good sources of carbohydrate include starchy foods such as rice, pasta, noodles, potatoes and bread.

It is vital to increase the frequency of carbohydrate intake with "kit bag" or "on-the-road" snacks such as fruit (bananas are very popular), cereal bars, rolls and sandwiches, rice pudding, yoghurts and sweets, such as jelly babies and gums, are ideal!

All of these are also useful during breaks in sporting activity. Some sportsmen and women still believe that eating after exercise should be avoided. Nothing could be further from the truth; refuelling should start immediately after activity.

This enhances the recovery and helps minimise fatigue. This should be a combination of carbohydrate refuelling and fluid replacement.

Fruit, cereal bars, sandwiches etc, should be taken in the changing room with a meal ideally within two hours. This refuelling and rehydration should continue throughout the rest of the day.

Maintenance of adequate fluid intake is of equal importance for those involved in activity at all levels and this is often overlooked. Every 1kg of loss of weight during exercise is the equivalent of one litre of lost fluid.

This is obviously exacerbated in warm conditions. It is important to get into a pattern of drinking a little, but often, to maintain hydration. There is much debate, and considerable commercial interest, as to what is the best fluid to drink.

In my opinion, the hardest part is to persuade those who exercise of the importance of fluids and, if you can get them to drink water, then the most important goal has been achieved.

Water is cheap, effective and readily available, and ideal for day-to-day fluid maintenance when not playing sport.

If we accept that the human body is the world's most complicated machine, then it is no surprise that, in order to perform to its optimum ability, we need to treat it well.

The National Sports Health and Injury Clinic is on 0141-616 6161 or at sportsmedicinecentre.org