fluid balance

Question 1

what is the terminology behind fluid balance?

Answer 1

• Dehydration
The process of losing fluid; everyone in here is dehydrating!
• Hypohydration Physiological state of ‘too little’ total body water
• Euhydration
Physiological state of optimum ‘normal’ body water
• Hyperhydration
Physiological state of ‘too much’ total body water
• Rehydration
The process of gaining fluid; i.e. drinking

Question 2

what two compartments are included in fluid distribution?

Answer 2

• Intracellular Fluid
(60-70%)
• Extracellular Fluid
(30-40%)

Question 3

what is the physiology of fluid balance?

Answer 3

Equilibrium between body water gains and body water losses

Question 4

what are the two variables behind homeostasis?

Answer 4

• Regulated variables

* Controlled variables

Question 5

what are the two types of dehydration?

Answer 5

osmotic - intracellular

volume - extracellular

Question 6

what does intracellular dehydration do?

Answer 6

Increase osmolality + decrease in volume

Question 7

what does extracellular dehydration do?

Answer 7

Reduction in volume but not osmolality

Question 8

what happens when we drink too many fluids?

Answer 8

Overdrinking (water)
Dilutional hyponatremia
Urine production increased and AVP secretion reduced

Question 9

Performance effect dehydration – does it, doesn’t it?

Answer 9

• Dehydration of 2-7% of body mass consistently

decreased endurance performance, ranging from 7-60%

Question 10

how much should an individual drink?

Answer 10

depends on their own circumstances, it is hard to recommend generic guidelines,