What did Dr. Hall's study find about the contestants' resting metabolic rates after six years?

Question

BlackTom AI · Accepted Answer

Resting metabolic rate (RMR) is the energy the body expends at rest to maintain basic physiological functions. Dr. Hall’s longitudinal follow-up measured contestants’ RMR at baseline (before the show), after rapid weight loss, and again six years later, comparing energy expenditure to body composition and weight.

1. Relevant knowledge points and concepts
- RMR is largely determined by lean body mass, hormonal status (thyroid, leptin), and sympathetic activity.
- “Metabolic adaptation” refers to a persistent reduction in RMR below what would be predicted from body composition after weight loss.
- Long-term follow-up can reveal whether this adaptation reverses when weight is regained.

2. Step-by-step reasoning based on the study design and findings
- Contestants underwent substantial weight loss during the show; RMR dropped acutely, as expected.
- Six-year follow-up re-measured RMR and body weight/composition.
- Although many contestants regained weight over the six years, their measured RMR remained lower than expected for their current body composition and compared to their pre-show values.
- This indicates a persistent metabolic adaptation rather than a transient effect that reversed with weight regain.

3. Calculations
- The study compared measured RMR to predicted RMR based on lean mass; the persistent negative difference indicated depressed RMR. (No numerical calculations are provided here, but the comparison method is standard.)

4. Why the correct answer is correct
- The empirical result reported by Dr. Hall was that RMR stayed depressed despite participants regaining weight, showing that the metabolic adaptation persisted long-term.

5. Why the other options are incorrect
- “They increased significantly”: contradicts the measured persistent suppression.
- “They remained the same as before the show”: would imply no lasting adaptation; the study found a sustained decrease.
- “They varied widely without a clear pattern”: the study reported a consistent depressed RMR rather than random variability.

6. Conclusion
- Therefore, the correct conclusion is: They stayed depressed despite weight regain. This matches the provided answer.

What did Dr. Hall's study find about the contestants' resting metabolic rates after six years?Single choice

Similar Questions

A change in which of the following would boost one's resting metabolic rate?

Which is the largest component of metabolism, accounting for about 65% to 70% of daily energy expenditure?

Question at position 43 Over the lifespan, when accounting for lean body mass, resting metabolism tends to:Remain the sameDecreaseIncreaseNot enough information

Question at position 10 Lean body mass is a modifiable variable that influences resting metabolism?TrueFalse

Question at position 9 The use of a triaxial accelerometer is acceptable for assessing the resting metabolic rate of all people, regardless of their body composition.TrueFalse

Question at position 2 Claudio has more lean body mass than Vanessa, so you could predict that Claudio has a resting metabolism that is ____ than Vanessa: the samelowerhighernot enough information

The main contributor to daily energy expenditure for the average person is the:

The greatest contributor to the average persons daily energy expenditure is:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler