What did Dutch researcher Luiz Carlos Hespanhol suggest regarding the health benefits of running and walking?

Question

BlackTom AI · Accepted Answer

Walking provides similar benefits to running but takes longer to achieve. This captures Hespanhol’s key point: health gains depend on total exercise dose (intensity × time), so lower-intensity walking can match higher-intensity running if performed for longer.

1) Relevant knowledge points and concepts
- Exercise dose is commonly expressed as MET-minutes (MET = metabolic equivalent). Higher-intensity activities have higher MET values. Health benefits (cardiovascular, metabolic, mortality risk reduction) scale with cumulative energy expenditure, not just the activity label.
- Running is higher intensity (higher METs) than walking, so a shorter running session can produce the same MET-minutes as a longer walking session.

2) Step-by-step reasoning
- Let MET_running be the MET value for running and MET_walking for walking. Total benefit ≈ MET × duration (minutes).
- To equate benefits: MET_running × time_running = MET_walking × time_walking.
- Solve for time_walking: time_walking = (MET_running / MET_walking) × time_running.

3) Calculation with intermediate steps (illustrative)
- Example values: MET_running ≈ 8; MET_walking ≈ 4.
- If time_running = 30 minutes: required walking time = (8 / 4) × 30 = 2 × 30 = 60 minutes.
- Thus 30 minutes of running ≈ 60 minutes of walking for equivalent MET-minutes.

4) Why the correct answer is correct
- Hespanhol emphasized that walking isn’t inferior in outcome; it’s lower intensity, so to reach the same cumulative exercise dose you need more time. When adjusted for duration/intensity, walking produces similar health effects as running.

5) Why other options are incorrect
- “Equal benefits regardless of frequency and duration”: incorrect because intensity and duration determine dose; equal activity minutes aren’t always equal benefits.
- “Walking is safer and more efficient”: walking may be safer for some, but not necessarily more efficient—efficiency depends on goals and energy expenditure.
- “Running is significantly more beneficial”: incorrect because when dose is equated, benefits are similar; running is time-efficient but not inherently superior in all health outcomes.

6) Conclusion
The correct choice—Walking provides similar benefits to running but takes longer to achieve—matches Hespanhol’s conclusion and is therefore confirmed.

What did Dutch researcher Luiz Carlos Hespanhol suggest regarding the health benefits of running and walking?单项选择题

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