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Body fluid is lost when you swim. Drinks provide fluid to help prevent dehydration
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Some drinks also contain some carbohydrate (sugar) to provide some energy and some sodium or potassium (electrolytes)
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Drinks provide both fluid & energy (isotonic) are well absorbed by the body
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Avoid the very high sugar “high energy” or “designer” drinks as they can stop the body using the fluid efficiently
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Try not to become thirsty – being thirsty means you are already dehydrated
There are 3 different types of drinks on the commercial market
Isotonic: these fluids are absorbed as quickly as water and provide a boost of carbohydrate for the working muscle. It has shown that isotonic drinks, if taken around training can help performance. They can be drunk before & after exercise.
e.g. Lucozade Sport, Powerade, High Five, Boots Isotonic & Gatorade.
Hypotonic: contain less carbohydrate but are still useful in providing fluid to the body. They can be drunk before & after exercise e.g. Lucozade low calorie, replay
Hypertonic: These fluids should only be used after a swim to help refuel the muscles carbohydrate (glycogen) stores e.g. Lucozade NRG
Commercial sports drinks are convenient but expensive.
Try making your own.
Ingredient |
Hypotonic |
Isotonic |
Hypertonic |
Glucose / Sucrose warm water salt |
20g 1 litre 1g ( a pinch) |
50g 1 litre 1g ( a pinch) |
100g 1 litre 1g ( a pinch) |
Unsweetened fruit juice Water salt |
250mls 750mls 1g ( a pinch) |
500mls 500mls 1g ( a pinch) |
1 litre – 1g ( a pinch) |
Orange squash water salt |
100mls 1 litre 1g ( a pinch) |
200mls 1 litre 1g ( a pinch) |
400mls 1 litre 1g ( a pinch) |