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Most Americans still not getting enough exercise

ATLANTA (Reuters) – More American adults are walking regularly but less than half of them exercise enough to improve their health, according to a federal study released on Tuesday by the Centers for Disease Control and Prevention.

A telephone survey conducted in 2010 found that 62% of adults walk 10 minutes or more a week, up from 55.7% in 2005, researchers reported in the CDC’s Morbidity and Mortality Weekly Report.

However, only 48% of adults exercise enough to improve their health, which was up from 42.1% in 2005, the CDC said.

The agency recommends at least 150 minutes per week of aerobic exercise.

“Physical activity is the wonder drug,” CDC director Dr. Thomas R. Frieden told reporters. “It makes you healthier and happier. More Americans are making a great first step in getting more physical activity.”

According to the CDC study, which analyzed survey responses from 23,129 adults, 15 million more Americans are walking at least 10 minutes per week than was indicated in the 2005 study.

Despite the increase in walkers, the average amount of time adults spent walking dropped from 15 minutes a day in 2005 to 13 minutes in 2010, the CDC said.

The West had the highest percentage of walkers, with 67.5% saying they walked at least 10 minutes a week, compared to 56.8% in the South which had the lowest percentage nationally.

However, the South had the most improvement in the nation over 2005, Dr. Frieden said.

“People in the South who have traditionally had higher rates of obesity and higher rates of heart disease and stroke actually had the highest percentage increase in proportion of people who walk, up eight percentage points,” the CDC director said.

The CDC recommends adding more walking trails and street lights to encourage walking, along with speed bumps and other techniques to slow traffic. The CDC also encourages agreements between local governments and schools to allow community members to use tracks after school hours.

Employers should also encourage workers to walk during breaks, Dr. Frieden said.


MMWR 2012.