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Walking, cycling can have mixed benefits.

Increasing the amount of walking and bicycling from four minutes to 22 minutes per day cuts cardiovascular disease and diabetes significantly but increases the risk of injury, according to a study in the April AJPH.

The study, which focused on San Francisco, examined health benefits of transportation strategies to cut greenhouse gas emissions. It also looked at travel patterns, injuries, physical activity, air particulate matter and greenhouse gas emissions in the San Francisco area.

Increasing walking and biking from four to 22 minutes cut heart disease and diabetes risk by 14 percent, but it also increased traffic injuries by 39 percent.

The study's authors said increasing physical activity could have a significant improvement on population health, but only if measures can be put in place to minimize pedestrian and bicyclist injuries. (Page 703)
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Title Annotation:JOURNAL WATCH
Author:Tucker, Charlotte
Publication:The Nation's Health
Date:May 1, 2013
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