Hydration Flashcards
What is an isotonic drink ?
Contains carbohydrates and minerals at a smaller concentration to that in the human body.
What is a hypertonic sports drink ?
Contains higher concentration of carbohydrates to that in the human body.
What is a hypotonic sports drink ?
Contains a lower concentration of carbohydrates to that in the human body.
What does an electrolyte sports drink do ?
Maintains a fluid balance by replacing important salts and minerals.
Ex. calcium and iron
What is dehydration ?
Progressive depletion of body fluids caused when.
fluid loss > fluid intake
What is thermoregulation ?
The process that allows the body to maintain its core body temperature.
What is hyponatraemia / water intoxication ?
A condition where the levels of salt or sodium, in the blood drops to abnormally low levels.
What are the benefits of hydration ?
(4)
- regulate body temperature
- regulate heart rate
- maintain blood volume
linked to blood pressure and viscosity of blood - regulate transport of essential nutrients
What are the drawbacks of dehydration ?
- increased blood viscosity
- decreased blood flow
- increased lactic acid production
- early OBLA
blood volume depletion…
- decreased blood to skin
- decreased sweating
- impaired thermoregulation
- increased core body temperature
- heat stress
What are the positive of isotonic drinks ?
(2)
- replaces fluids lost by sweating
- supplies a boost of carbohydrate
What is the negative of isotonic drinks ?
- absorbed slower than hypotonic drinks
Give examples of isotonic drinks and what they are good for.
ex. power aid, Lucozade sport
Good for… endurance, team games
What is the positive of hypertonic drinks ?
- replenishes glycogen stores after exercise
What are the negatives of hypertonic drinks ?
(2)
- not suitable during exercise as it pulls water into the digestive system to dilute it
- absorbed very slowly
What are examples of hypertonic drinks and what are they good for.
Ex. fruit juice, Lucozade energy
Good for… post performance, ultra endurance events
