What matters more is getting the exercise done, not whether it's spread out over the week. Weekend warriors, rejoice!
This is Dr JoAnn Manson, professor of medicine at Harvard Medical School and Brigham and Women's Hospital. I'd like to talk with you about aon exercise and cardiovascular disease , trying to disentangle the role of the total amount or volume of moderate to vigorous physical activity weekly vs the frequency or pattern of activity. The latter means whether the activity is equally distributed across the week or tends to occur on only 1-2 days, such as a"weekend warrior" pattern.
This was a very large study done in the UK Biobank, including 90,000 men and women with a mean age of 62 years. An objective measure of physical activity was done through accelerometers for 1 week, and then they looked at the incidence CVD events over about 6 years They classified the participants as either meeting the guidelines for moderate to vigorous physical activity of at least 2.5 hours per week, or being physically inactive.
They found that both of the active groups, whether they had fairly equal distribution of activity across the week or tended to concentrate their activity into 1-2 days during the week, had similar reductions in CVD. The CVD reductions were quite substantial for
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