Understanding Total Energy Expenditure and Basal Metabolic Rate
The Largest Contributor to Total Energy Expenditure
When it comes to total energy expenditure, it is essential to understand which component contributes the most to the calories we burn in a day. For most individuals, the largest contributor to total energy expenditure is the basal metabolic rate (BMR).
Final answer:
The largest contributor to total energy expenditure for most individuals is the basal metabolic rate (BMR). About 75% of calories burned in a day go into basic functions.
Explanation:
The largest contributor to total energy expenditure for most individuals is the basal metabolic rate (BMR). BMR is the rate at which the body uses food energy to sustain life and perform basic functions. The largest fraction of energy goes to organs like the liver and spleen, with the brain coming next. During exercise, the energy consumption of skeletal muscles and the heart increases. About 75% of calories burned in a day are used for these basic functions.
Which component is the largest contributor to total energy expenditure for most individuals? The largest contributor to total energy expenditure for most individuals is the basal metabolic rate (BMR). About 75% of calories burned in a day go into basic functions.