When the exercise is intense, even a little can offset the dangers of sitting all day.
are a type of fat in the blood. Eating a lot of greasy foods or consuming more calories than the body needs may lead to high triglyceride levels, which can raise the risk of heart disease.
Previous studies showed just one bout of exercise, like running for an hour, could improve triglyceride levels the next day, but this experiment showed the same benefit happened with just 160 seconds of exercise, said Edward Coyle, professor of kinesiology and health education at the University of Texas at Austin.
“Exercise improves health. Usually, what you do today improves your health tomorrow,” Coyle, who is also the director of the school’s Human Performance Laboratory, told TODAY. “So when you do very intense exercise like this, even though it’s not much exercise at all, it still is a stimulus to the muscle… it improves the muscles’ ability to take triglycerides out of the bloodstream — burning them directly, increasing the fat oxidation.”For the 2020 study, researchers asked four men and four women — all healthy and in their 20s — to sit for eight hours, getting up only to get food or use the bathroom.
They then sat for eight hours on a separate day, but did brief bouts of intense exercise — a four-second sprint, followed by 45 seconds of rest, repeated five times — every hour. It amounted to 160 seconds of exercise for the whole day.
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