Least fit people need to do more exercise than fittest to get same benefit – study
Summary
A study of over 17,000 adults in the UK found that people with the lowest fitness levels need to exercise 30 to 50 minutes more each week than the fittest to reduce their risk of heart problems by the same amount. The research confirms that doing at least 150 minutes of moderate to vigorous exercise weekly lowers heart disease risk for everyone, but more exercise may provide even greater benefits.Key Facts
- The study tracked more than 17,000 British adults aged 40-69 for about 8 years.
- Fitness was measured by a cycling test and a fitness tracker worn for one week.
- Cardiovascular events tracked included heart attack, stroke, and heart failure.
- Exercising 150 minutes weekly reduced heart risks by 8-9% for all fitness levels.
- Less fit people needed 370 minutes weekly to reduce risk by 20%, while fitter people needed 340 minutes.
- To reduce risk by over 30%, the least fit would need more than 10 hours of exercise weekly; the fittest needed just over 9 hours.
- Experts caution that recommending over 9 hours a week is not a practical public health message.
- Authorities continue to advise aiming for at least 150 minutes of moderate to vigorous exercise weekly, emphasizing any activity helps.
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