Metabolic Systems and Fuel Sources in Exercise Quiz

Creatine phosphate system is used for prolonged submaximal muscle activity.

Fats are the main fuel for prolonged moderate intensity exercise.

Intensity, duration, levels of fatty acids, and state of training do not affect the use of carbohydrates and fats during exercise.

Aerobic exercise mainly relies on anaerobic metabolism for energy production.

Recovery from long distance effort takes more time than recovery from short maximum effort.

Aerobic metabolism provides more than 60% of the energy demands during long distance efforts.

Carbohydrates are the main fuel for brief, intense work during exercise.

Lactic acid production is low during aerobic exercise.

Recovery from 15 seconds of maximum effort is slow and requires a longer duration than recovery from long distance effort.

The aerobic system is not important during very short maximum effort lasting 15 seconds.