working at a moderate intensity so that the body has time to utilise oxygen for energy production, allowing the body to work for a continuous period, e.g. long-distance events, or duration of a match

working at a high intensity without oxygen for energy production, therefore limited energy so work period will be short, e.g. sprinting up the wing in a football match

a by-product of energy production-formed when the body is exercising anaerobically at high intensity

when lactate levels in the blood/muscle rise due to increased work intensity, e.g. moving from aerobic to anaerobic exercise

Aerobic and anaerobic exercise

Physical education

This unit will explore the impact of varying the intensity and durations of exercise upon the build up of lactic acid and recovery rates. Exercises will be classified as either aerobic (with sufficient oxygen) or anaerobic (without sufficient oxygen).

Anatomy and physiology: anaerobic and aerobic exercise

Aerobic respiration is in the presence of which of the following?

long duration and low intensity exercise using oxygen

high intensity exercise without oxygen that can only last a short time

build up of the by-product of anaerobic respiration in the blood

Match the following key terms with their definitions.

If you set off too fast on a long distance run, you will cross the {{ }} threshold resulting in a build up of lactic acid and fatigue.

Regular {{ }} training results in an improved ability to work at a moderate intensity for longer whilst still working aerobically.

Place the following activities in order with the most aerobic at the top and the most anaerobic at the bottom.

Which of the following activities uses a mixture of aerobic and anaerobic respiration to provide energy for exercise?

Which substance do the muscles require to produce energy for exercise?

branch off the trachea to enter each lung

Match the following cardio-respiratory features with their role.

The substance in red blood cells that carries oxygen is called ...

Arrange the following features in order to show how oxygenated blood is transported from the lungs to the muscles.

The amount of blood pumped out of the heart per minute is know as {{ }} and is measured in litres per minute.

the amount of air breathed in or out normally at rest

the additional air that can be breathed in after a normal breath in

a maximal breath in followed by a maximal breath out

the amount of air left in the lungs after a maximal breath out

Match the following respiratory volumes to the definition.

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