Water

Question 1

Functions of the water in the body (6)

Answer 1

• Ingestion
• Digestion
• Absorption
• Transportation of nutrients
• Regulation of body temp
• Excretion of waste products

Question 2

What does water consumption depend on

Answer 2

• Climate
• Clothing
• Physical activity
• Age

Question 3

Thirst

Answer 3

Consumption of liquids is governed by thirst and habit, both of which can be overridden

Question 4

How much to drink

Answer 4

There is no recommendation made on the intake of water in the DRV report in the UK

Question 5

Water loss

Answer 5

Water loss through kidneys as urine and through the skin as sweat and through faeces

Question 6

Water balance

Answer 6

Kidneys maintain water balance

Question 7

What is the body’s response to dehydration

Answer 7

• Plasma volume decreases
• Blood osmolality
• Increased reabsorption of water and sodium

Question 8

Hyponatremia definition

Answer 8

Low sodium concentration in the blood

Question 9

Hyponatremia symptoms

Answer 9

• Nausea
• Headache
• Confusion
• Loss of energy
• Muscle weakness
• Coma

Question 10

Exercise induced hyponatremia

Answer 10

Sodium loss through excess sweating when exercising

Question 11

Beverage hydration index

Answer 11

Different beverages will hydrate us more than others shown by the scale on the index

Question 12

Water in foods

Answer 12

Foods also contribute towards our requirements for water

Question 13

Fluid recommendations for sport

Answer 13

• Before = 2 hours before consume 400-600ml fluid
• During = 150-350ml fluid every 15-20 mins
• After = Adequate fluids to replace sweat losses

Question 14

Calculating sweat rate

Answer 14

Some people sweat more than others and will therefore require more fluid replenishment to maintain physical performance