Exercise, even a little, can lengthen your life. Norwegian researchers also found that too much sitting was associated with a higher risk of early death. The study analyzed data from eight studies that included more than 36,000 adults, aged 40 and older, who were followed for an average of almost six years.
During follow-up, nearly 6% of the participants died. After adjusting for other factors, the researchers concluded that any amount of physical activity, regardless of intensity, was associated with a significantly lower risk of early death.
Death rates fell sharply as total activity increased to an amount that was similar to average activity levels in U.S. men and about 10% to 15% lower than activity levels in Scandinavian men and women.
A similarly steep decline in death rates was associated with increasing amounts of light physical activity up to about 300 minutes (5 hours) a day, and moderate-intensity physical activity of about 24 minutes per day.
The largest difference in early death risk, about 60% to 70%, was between the least and most physically active, with about five times more deaths among inactive people than among those who were most active.
The researchers also found that spending 9.5 hours or more each day sitting was associated with a statistically significant increased risk of early death.
Examples of light-intensity activity include slow walking or household tasks, such as cooking or washing dishes. Moderate activity includes brisk walking, vacuuming or mowing the lawn, while vigorous activity includes jogging, carrying heavy loads or digging.
Guidelines recommend at least 150 minutes of moderate intensity or 75 minutes of vigorous physical activity each week.
These findings provide important information for public health recommendations and suggest that the message might simply be “sit less and move more, and more often.”
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