Dashing up the stairs to your apartment, weaving between commuters as you dart toward the train — those small snippets of exercise, if they’re intense enough, can add up, according to a new study. The paper is among the first to examine what many exercise scientists have long hypothesized: A little bit of physical activity goes a long way, even movement you might not consider a workout.
The paper, published today in Nature Medicine, shows that tiny spurts of exercise throughout the day are associated with significant reductions in disease risk. Researchers used data from fitness trackers collected by UK Biobank, a large medical database with health information from people across the United Kingdom. They looked at the records of over 25,000 people who did not regularly exercise, with an average age around 60, and followed them over the course of nearly seven years. (People who walked recreationally once a week were included, but that was the maximum amount of concerted exercise these participants did.)
Those who engaged in one or two-minute bursts of exercise roughly three times a day, like speed-walking while commuting to work or rapidly climbing stairs, showed a nearly 50 percent reduction in cardiovascular mortality risk and a roughly 40 percent reduction in the risk of dying from cancer as well as all causes of mortality, compared with those who did no vigorous spurts of fitness.
The new research is part of a long tradition of research into quick blasts of exercise, usually with traditional workouts, like running on a treadmill or using an elliptical trainer at the gym. Interval training, which means engaging in short stretches of increased power or speed during a longer workout, has long been popular in the athletic world, said Jamie Burr, an associate professor of human health and nutritional sciences at the University of Guelph in Ontario who was not involved with the research.
