The duration of physical activity for each group was not immediately evident, but the World Health Organization advises that adults between the ages of 18 and 64 should engage in a minimum of 150 to 300 minutes of moderate-intensity aerobic exercise or 75-150 minutes of vigorous-intensity aerobic exercise per week.
According to Dr. George Savva, a senior research scientist at the Quadram Institute in Norwich, England, the Finnish study's emphasis on twins provided it with a "powerful research design," as reported by The Times of London.
However, the expert cautioned that the researchers' selection criteria based on BMI, which can be influenced by physical activity, might have influenced some of the effects of exercise.
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