Protein & Hydration

Question 1

What are the role of hydration in an athlete?

Answer 1

1. Thero-regulation
   - preventing over heating
2. Electrocyte balance
   - muscle contraction
3. intra/extra-cellular fluid balance
   - cellular functioning
4. Blood pressue control
   - changes in heart rate with exercise

Question 2

Thermoregulation

Answer 2

Process of keeping body temperature within a range that support life
* ~37°C
* Athletes core can rise to 41.5 °C in competition
* Menstrual cycle can alter core body temperature
* Hypothalamus is our control center, “central regulation”

Question 3

Heat balance

Answer 3

internal metabolic heat production = rate of heat exchange to environment

Question 4

Thermoregulation functions

Answer 4

Physiological control
1. Sweating
* In humans, sweating can exceed 30 g/min
* Water lost with sweating is derived from all fluid compartments of the body
* Causing an increase in the concentration of electrolytes in the body fluids (hypertonicity)
2. Vaso-dilation
- less resistance
Behavioral control:
* Thirst - natural response on a hot day
* Shade-seeking behaviours
* Wearing light colored clothes, a hat