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Precious Roy
RE: Danish study shows most of you will die the same time as a couch potato
I forget where it was, but there was a recent article about how researchers cooked the numbers to show that learning a second language had a positive effect on a person's ability to concentrate and focus on tasks. The researchers had run several studies. One study showed a correlation. But several of the studies did not. The researchers have no obligation to report the studies that did not support their theory. This is largely because journals are only interested in publishing studies that show something and never want to publish studies that show nothing. So, they let researches throw the unsupportive data in the trash even if it cast extreme doubt on the study that is published.

I think that is what we have with the studies on mortality and distance running to the extent researchers keep making the same mistake of not having a statistically significant sample of those who run a lot. In the cited study in the article, they had @5,000 participants. Of those, only 128 were "strenuous" runners. You just cannot make any conclusions based on that kind of sample size.

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