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Core 2 Factors affecting performance

How can nutrition affect performance?

Hydration and fluid replacement

The core temperature of the human body is maintained within a narrow range of 1 degree above or below 37 degrees Celsius. During exercise the body generates heat energy as a result of the muscles burning fuel to power movement. To maintain a constant body temperature the body has to find someway to lose heat. This can be achieved in a number of ways including, radiation, conduction, convection and evaporation. It is also important to maintain a constant fluid balance in order for the body to be able to regulate its temperature effectively, especially during endurance events. A general rule to follow is that whenever you increase your energy expenditure, you also need to increase your water intake.

Student activity
What effects does heat loss have on the body? What factors influence the amount of sweat you will lose during an activity? What are the physical signs of dehydration, heat exhaustion and heat stroke? Create a list of helpful hints for athletes to follow to avoid dehydration. Organise the hints under each of the following areas. pre-event event post-event. The Gatorade Company site has information about hydration and fluid replacement . Follow the directions below to explore this site for answers to the above questions. This site requires you to register before you can move into the relevant section. To register: Click on the on-line membership section and complete the on-line registration form. This should only take a couple of minutes. Registration is free. Once registration has been completed click on the fluids 2000 navigational button on the home page. Locate the Science of sweat and Dehydration and heat illness and read the related information.

Student activity

What effects does heat loss have on the body?
What factors influence the amount of sweat you will lose during an activity?
What are the physical signs of dehydration, heat exhaustion and heat stroke?
Create a list of helpful hints for athletes to follow to avoid dehydration. Organise the hints under each of the following areas.
- pre-event
- event
- post-event.

The Gatorade Company site has information about hydration and fluid replacement . Follow the directions below to explore this site for answers to the above questions.

This site requires you to register before you can move into the relevant section. To register:

Click on the on-line membership section and complete the on-line registration form. This should only take a couple of minutes. Registration is free.

Once registration has been completed click on the fluids 2000 navigational button on the home page. Locate the Science of sweat and Dehydration and heat illness and read the related information.

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