Each day we need to replace about 2 litres of fluid to balance
general body losses - even before sweat loss during training are
taken into account. When the body heats up, production of sweat
helps to reduce body temperature. Sweat rates vary between individuals,
and increase with harder works loads and hotter environments.
Think of your body as a car with a radiator, if you don't keep
the radiator full your car over heats and will break down or run
poorly. Same goes for your body, if you don't stay well hydrated.
There is a gradual reduction in performance, physical and mental,
as the degree of dehydration increases.
Fluid needs are important to your competition strategies, so start
developing good drinking habits in advance. Look forward to better
training when you are better hydrated. Good luck - or even thirst
- are not the basis of a good hydration plan, be organised with
drinking plenty of fluid over the day.
Strategies to replace fluids over the day
Make sure that you drink at each meal. Don't overlook water
as a great choice.
Take extra care in hot, humid weather, you will need to increase
your drinking opportunities.
Keep a supply of fluids on hand during the day. Carry your own
water bottle so you can get a drink wherever you are.
Rehydrate quickly after a session. Remember that you will continue
to lose fluid during recovery through urine and continued sweating.
You need to drink 1.5 times the amount lost over the next 1-2
hours to achieve good hydration (E.g. If you are 1 kg lighter
after a session, you will need to drink 1500ml to rehydrate).
Get a feel for sweat losses during your activity, and how well
you replace these. If you weigh yourself before and after a session,
you are measuring fluid losses only.
Every 1 kg of weight lost = 1 litre of fluid.
Try to keep fluid loss to a minimum over a session by drinking
as often as practical.
During the game
Most important during the event is fluid intake. Hopefully you
have stayed well hydrated during the day with plenty of fluid intake,
to take some pressure off drinking huge volumes during a competition.
There is a gradual reduction in performance as the degree of dehydration
Tips to remember:
Try to consume water at every opportunity possible and practical,
i.e. when there are breaks in a game.
Have your own water bottle and monitor how much you drink.
Drink to your comfort level, you can experience stomach upsets
if you consume too much.
In events longer than 1 hour there may be benefits to consuming
some carbohydrates with your drink, such as a sports drink.
Keeping fluids cool may encourage greater consumption.