Exercise 1 Hour a Day to Avoid Weight Gain

March 23, 2010 -- Weight gain with age is common. But middle-aged women who
start out at a healthy weight and get in an hour of moderate activity every day
can avoid weight gain, according to a new study.
There is plenty of research on how to lose weight and keep it off, but
''there's very little research on preventing weight gain in the first place,"
says the study lead author, I-Min Lee, ScD, an associate epidemiologist at
Brigham and Women's Hospital and associate professor of medicine at Harvard
Medical School in Boston.
So her team addressed that question, trying to pinpoint the amount of
physical activity needed to prevent weight gain over time, without calorie
restriction, a question that is much debated with little consensus. The study
is published in the Journal of the American Medical Association.




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