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The US surgeon general
recommends
adults resist the couch potato urge and exercise at least 30 minutes
every day. However, many people find it hard to reserve 30 minutes
a day for a workout, so the researchers wanted to see if a series
of "brisk" 10-minute activity periods would have the same
beneficial results as a 30-minute workout.
How was the study
conducted?
Their study included
sedentary men and women in their mid-40s. The volunteers participated
in either a brisk 10-minute walk three times per day, or a brisk
walk lasting 30 minutes once per day, 5 days a week for 6 weeks.
After a 2-week rest period, the groups switched walking routines
and followed the other group's instructions for another 6 weeks.
What were the results?
Both groups saw improvements
in heart disease-related factors including a slight drop in total
cholesterol and boosts in "good" cholesterol and aerobic
ability. Both walking patterns resulted in similar decreases in
tension and anxiety.
Medicine
& Science in Sports & Exercise, September 2002;34:1468-1474
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