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GCSE Food Preparation and Nutrition · key term
The minimum rate at which the body uses energy at rest to maintain essential life processes, such as breathing and a heartbeat. It can be expressed as an energy requirement per day.
Used by AQA
Specification 3.2.3.2 · Paper 1
Revise: Energy NeedsBasal metabolic rate (BMR) is the minimum rate of energy use needed to maintain these essential life processes at rest. It can be expressed as the number of kilocalories needed for them each day. BMR is therefore only part of a person's total daily energy requirement, not an allowance for everything they do.
Distinguish BMR from total daily energy needs: BMR covers basic life processes at rest, while PAL accounts for how active someone is.
Explain links rather than just naming factors: ageing often reduces muscle mass, which lowers BMR.
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