Does Walking 15 Minutes per Day Keep the Obesity Epidemic Away? Simulation of the Efficacy of a Populationwide Campaign
Alfredo Morabia, MD, PhD and
Michael C. Costanza, PhD
Alfredo Morabia and Michael C. Costanza are with the Division of Clinical Epidemiology, Geneva University Hospitals, Geneva, Switzerland.
Correspondence: Requests for reprints should be sent to Alfredo Morabia, MD, PhD, Division of Clinical Epidemiology, Geneva University Hospitals, 25, Rue Micheli-du-Crest, 1211 Geneva 14, Switzerland (e-mail: alfredo.morabia{at}hcuge.ch).
Small physical activity increases may prevent weight gain inmost populations. Geneva residents completed validated quantitativephysical activity frequency questionnaires from 1997 to 2001.Fifteen minutes per day of moderate or brisk walking, or 30minutes per day of slow walking, could increase physical activityat the population level; however, if the specific goal is toapproach expending 420 kJ/d (100 kcal/d) through walking, theduration should be closer to 60 minutes for slow walking and30 minutes for moderate or brisk walking.
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