Daily Physical Activity Prevents Weight Gain

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Daily Physical Activity Prevents Weight Gain Only in Women With Normal BMI
MedscapeCME Clinical Briefs , 2010-03-26

March 26, 2010 — Daily physical activity is associated with less weight gain only among women whose body mass index (BMI) is lower than 25 kg/m2, according to the results of a prospective cohort study reported in the March 24/31 issue of the Journal of the American Medical Association. Approximately 60 minutes per day of moderate-intensity physical activity was associated with successfully maintaining normal weight.

“The amount of physical activity needed to prevent long-term weight gain is unclear,” write I-Min Lee, MBBS, ScD, from Brigham and Women’s Hospital, Harvard Medical School in Boston, Massachusetts, and colleagues. “In 2008, federal guidelines recommended at least 150 minutes per week (7.5 metabolic equivalent [MET] hours per week) of moderate-intensity activity for ‘substantial health benefits.”’

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