Hydration

Is powerade Hypotonic, hypertonic, or Isotonic?

• Hypotonic

• Hypertonic

• Osmosis

• Isotonic

Define dehydration.

• Lack of water in the body

• Water loss in excess of 2% of body weight

• Too much water in the body

• Water loss in excess of 20% of body weight

Dehydration can cause an increase in blood viscosity. What does 'blood viscosity' mean?

• Amount of blood

• Thickness of blood

• Amount of red blood cells in the blood

• Speed of blood flow

2% loss of body weight through sweat can lead to ______% decrease in sporting performance.

• 20%

• 70%

• 0% (no change)

• 50%

An increase in blood viscosity can... (2 answers)

• Increase heart rate

• Decrease heart rate

• Decreases blood flow to the surface of the skin which increases body temperature

• Increase blood flow to the surface of the skin which decreases body temperature

Due to less blood being pumped to the working muscles (as blood moves from slowly when dehydrated), there is a decrease in oxygen delivered to the muscles.s

• True

• False

Name an electrolyte lost through sweating.

Why is oxygen needed during exercise?

• Needed to produce ATP in the ATP-PC system.

• Needed to produce ATP in the anaerobic system.

• Needed to produce ATP in the aerobic system.

• It is not required.

What is the recommended consumption of water per hour of activity?

• 1 litre

• 250-550ml

• 400-800ml

• 800-900ml

What do isotonic drinks contain?

• Glucose (simple carbohydrates)

• Glucose (simple carbohydrates) and water

• Glucose (simple carbohydrates) and electrolytes

• Water