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Combined Science
Key terms
Muscle fatigue

GCSE Combined Science · key term

Muscle fatigue

Definition

A condition in which muscles stop contracting efficiently during prolonged vigorous activity.

Used by AQA

How each exam board covers it

AQA GCSE Combined Science Trilogy · 8464

Specification 4.4.2.2 · Paper 1

Revise: Response to Exercise

AQA Combined Science Trilogy past papers

Exam tips

1
Muscle fatigue means that muscles stop contracting efficiently, not simply that a person feels tired.

Related key terms

Anaerobic respiration
Breath volume
Breathing rate
Heart rate
Lactic acid
Oxygen debt
Oxygenated blood

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