Basal metabolic rate (BMR)

Definition

Basal Metabolic Rate (BMR) is the amount of energy expended while at rest in a neutrally temperate environment. It represents the minimum energy required to maintain vital functions such as breathing and circulation.

5 Must Know Facts For Your Next Test

1. BMR accounts for about 60-75% of daily energy expenditure in most people.
2. Factors influencing BMR include age, sex, genetics, body composition, and hormonal status.
3. Weight management drugs can affect BMR by altering metabolic processes or influencing appetite and energy expenditure.
4. Accurate measurement of BMR requires a controlled environment, typically involving indirect calorimetry.
5. Understanding BMR is crucial for determining appropriate caloric intake for weight management.

Review Questions

• What percentage of daily energy expenditure does BMR typically account for?
• Name three factors that can influence an individual's BMR.
• Why is understanding BMR important in the context of weight management?

Related terms

Thermogenesis:

The process of heat production in organisms, contributing to overall energy expenditure.

Indirect Calorimetry: A method used to measure oxygen consumption and carbon dioxide production to estimate metabolic rate.

Resting Metabolic Rate (RMR): Similar to BMR but measured under less stringent conditions; it includes minimal activity beyond resting state.