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The study found that older women who took an average of 4,400 steps per day were 41 percent less likely to die within the next four years than those who took only 2,700 steps per day.
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The findings support other research that has linked a lack of physical activity to a higher risk of developing cardiovascular disease — and of having poorer health and quality of life after a heart attack or stroke.
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The American Fitness Index rankings are based on 33 separate indicators in two major categories: personal health and community/environment.
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“This is less than 10 minutes a day for people to maintain their independence,” said Dorothy Dunlop, the study’s lead author.
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The finding that individuals who become physically active later in life can “catch up” with life-long exercisers was unexpected, say the study’s authors.
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For adults aged 21 to 40, walking about 100 steps per minute constitutes moderate intensity, the study found.
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“Our finding that any physical activity provided mortality risk reduction underscores an important public health message that movement in itself (doing ‘something’), irrespective of intensity, is beneficial,” the researchers write.
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Despite all the benefits of exercise, only 26 percent of men in the U.S., 19 percent of women and 20 percent of adolescents meet the recommended levels of physical activity.
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Few of us ask where the 10,000-steps-a-day goal came from. Why that particular number of steps? Why not 5,000 — or 15,000?
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Minnesota ranked ninth in physical activity by adults, with 27.7 percent of the state’s residents meeting the federal guidelines. Colorado ranked No. 1.
