Fluids Flashcards
What are the functions of fluids
Joint lubrication Temperature regulation Component of blood Transportation Waste excretion
Total daily requirement of fluids?
2.5 L
Balanced diet usually provides how much fluid from food?
1.5 L
What is hypertonic?
Greater amount of glucose than body fluid
Slower absorption of fluid
More energy than fluid
What is hypotonic?
More fluid than glucose
Less energy, more hydration
What is isotonic?
Equal amount of hydration and fuel
Consumed pre, during and post workout
How is fluid loss measured?
Weight X percentage of fluid loss
What % causes death?
10
What % causes muscular work capacity to decline by 20-30%?
4%
What % causes heat exhaustion?
5%
What % cause hallucinations?
7%
What factors affect dehydration?
Temperature Altitude Acclimitisation Exercise intensity Time of exercise
How can people avoid dehydration?
Drink half a litre 2 hours before exercise
Drink 110-225 ml 5-10 mins before
Drink 225-280 ml during every 10-15 mins
Define diuretics/
Substances which encourage net water loss e.g. caffiene and alcohol
What do diuretics do to the body?
Stimulate the CNS
Encourage kidneys to excrete water