Question

Which of the following statement is correct regarding the Basal metabolic rate?

• A. It is the number of calories needed to maintain energy level during exercise.
• B. It is the number of calories needed to maintain the body at movement.
• C. It is the number of calories needed to maintain body function at high speed.
• D. It is the number of calories needed to maintain body function at rest.

Hint:

Factors like age, muscle mass, and gender significantly affect BMR. Generally, the more muscle mass you have, the higher your BMR.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Basal Metabolic Rate (BMR) represents the minimum amount of energy required to keep the body functioning while at a completely neutral, resting state.
Step 2: Detailed Explanation:

1. Even when you are sleeping or sitting perfectly still, your body requires energy for vital processes: breathing, blood circulation, cell production, and nutrient processing.
2. BMR accounts for about 60-75% of a sedentary person's total daily energy expenditure.
3. It does not include calories burned during physical activity or digestion (TEF).
Step 3: Final Answer: (D) It is the number of calories needed to maintain body function at rest.

Answer 2

Basal Metabolic Rate is one of several related "metabolic rate" terms that this question's wrong options seem to be drawing from, so distinguishing BMR from its neighboring terms is the cleanest way to settle which statement is correct.

1. It is the number of calories needed to maintain energy level during exercise: Energy expenditure during physical activity is called Activity Energy Expenditure, a completely separate component from BMR. BMR is specifically measured in a state of complete physical rest, not during exertion, so this statement describes a different quantity altogether.
2. It is the number of calories needed to maintain the body at movement: Any calories burned through movement, however light, again fall under activity-related expenditure rather than the basal rate, since BMR by definition excludes all voluntary movement and is measured while the body is completely still.
3. It is the number of calories needed to maintain body function at high speed: There is no recognized metabolic measure tied to "high speed"; this phrasing does not correspond to BMR or to any of the other standard components of daily energy expenditure, and BMR itself is specifically the opposite condition, complete rest, not high exertion.
4. It is the number of calories needed to maintain body function at rest: This matches the actual definition of BMR precisely, the minimum energy the body needs to keep essential processes like breathing, circulation, and cell repair running while completely at rest, with no digestion or physical activity factored in.

Once BMR is separated from calories burned through activity or digestion, the only statement left describing energy needed purely to sustain life at rest is the correct one.

Therefore, the correct answer is It is the number of calories needed to maintain body function at rest.