Publication Date: THURSDAY, Dec. 4 2008
Author:
Source: HealthDay News/U.S. News & World Report
Link: http://health.usnews.com/articles/health/healthday/2008/12/04/almost-two-thirds-of-americans-meet-exercise.html
An
estimated 65 percent of people in the
United
States last year met the 2008 Physical Activity Guidelines for Americans.
And 49 percent of those people met the Healthy People 2010 physical activity
objectives, according to a federal report released Thursday.
According to the 2008 guidelines, released in October by the U.S. Department
of Health and Human Services, the minimum recommended aerobic physical
activity required to produce substantial health benefits in adults is 150
minutes of moderate-intensity activity or 75 minutes of vigorous activity
per week, or an equivalent combination of moderate and vigorous physical
activity. In addition, muscle-strengthening exercises are recommended at
least twice a week.
The 2010 guidelines call for adults to do at least 30 minutes of
moderate-intensity activity five days per week, or 20 minutes of vigorous
activity three days a week.
For this study, U.S. Centers for Disease Control and Prevention researchers
analyzed data from 399,107 adults aged 18 and older who took part in the
2007 Behavioral Risk Factor Surveillance System (BRFSS) survey. The 64.5
percent of respondents who met the 2008 guidelines included 68.9 percent of
men and 60.4 percent of women. By age group, the percentage classified as
physically active ranged from 51.2 percent of those older than 65, to 74
percent of those ages 18 to 24.
Among racial/ethnic groups, rates were lower for non-Hispanic blacks (56.5
percent) than for non-Hispanic whites (67.5 percent). By education levels,
rates were lowest for those with less than a high school diploma (52.2
percent) and highest for college graduates (70.3 percent). By region, rates
were lowest in the South (62.3 percent) and highest in the West (67.8
percent). The study also found that 68.8 percent of normal weight people
were physically active, compared with 67.3 percent of those who were
overweight and 57.1 percent of those who were obese.
The 48 percent of respondents who met the Healthy People 2010 objectives
included 50.7 percent of men and 47 percent of women.
The study was published in the Dec. 5 Morbidity and Mortality Weekly Report,
a publication of the CDC.
In the BRFSS survey, moderate physical activity was assessed by asking
respondents, "When you are not working, in a usual week, do you do moderate
activities for at least 10 minutes at a time, such as brisk walking,
bicycling, vacuuming, gardening, or anything else that causes some increase
in breathing or heart rate?"
Those who answered yes were then asked, "How many days per week do you do
these moderate activities for at least 10 minutes at a time?" Finally, they
were asked, "On days when you do moderate activities for at least 10 minutes
at a time, how much total time per day do you spend doing these activities?"
To assess participation in vigorous-intensity activities, respondents were
asked, "When you are not working, in a usual week, do you do vigorous
activities for at least 10 minutes at a time, such as running, aerobics,
heavy yard work, or anything else that causes large increases in breathing
or heart rate?"
Those who answered yes were then asked, "How many days per week do you do
these vigorous activities for at least 10 minutes at a time?" Finally, they
were asked, "On days when you do vigorous activities for at least 10 minutes
at a time, how much total time per day do you spend doing these activities?"
