大象传媒

Aerobic respiratory system

The respiratory system is responsible for producing the majority of our energy while our bodies are at rest or taking part in low-intensity exercise for long periods of time such as jogging or long-distance cycling.

Cyclists in the Tour de France

Glucose + oxygen 鈫 energy + water + carbon dioxide

Glucose from carbohydrates and fats supply the energy for the aerobic energy system and can supply energy for long periods of time.

Carbohydrate food sources include rice, bread, potatoes, bananas and energy drinks. Fat food sources include butter, oils, cheese, milk and nuts.

Question

Give an example of an athletics event that mainly uses the aerobic energy system to provide energy.

Energy balance equation

In simple terms, if there is a greater intake than output in terms of diet then weight is likely to be gained. Conversely, if the output is greater than the input, weight can be lost.