A
New View of
Physical Activity |
This report brings together, for
the first time, what has been learned about physical activity and health
from decades of research. Among its major findings:
- People who are usually inactive can improve
their health and well-being by becoming even moderately active on a
regular basis.
- Physical activity need not be strenuous to
achieve health benefits.
- Greater health benefits can be achieved by
increasing the amount (duration, frequency, or intensity) of
physical activity.
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| The
Benefits of Regular Physical Activity |
Regular physical activity that is
performed on most days of the week reduces the risk of developing or
dying from some of the leading causes of illness and death in the United
States. Regular physical activity improves health in the following ways:
- Reduces the risk of dying prematurely.
- Reduces the risk of dying from heart disease.
- Reduces the risk of developing diabetes.
- Reduces the risk of developing high blood
pressure.
- Helps reduce blood pressure in people who
already have high blood pressure.
- Reduces the risk of developing colon cancer.
- Reduces feelings of depression and anxiety.
- Helps control weight.
- Helps build and maintain healthy bones,
muscles, and joints.
- Helps older adults become stronger and better
able to move about without falling.
- Promotes psychological well-being.
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| A
MAJOR PUBLIC HEALTH CONCERN |
Given the numerous health benefits
of physical activity, the hazards of being inactive are clear. Physical
inactivity is a serious, nationwide problem. Its scope poses a public
health challenge for reducing the national burden of unnecessary illness
and premature death.
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| WHAT
IS A MODERATE AMOUNT OF PHYSICAL ACTIVITY? |
As the examples listed in the box
show, a moderate amount of physical activity* can be achieved in a
variety of ways. People can select activities that they enjoy and that
fit into their daily lives. Because amount of activity is a function of
duration, intensity, and frequency, the same amount of activity can be
obtained in longer sessions of moderately intense activities (such as
brisk walking) as in shorter sessions of more strenuous activities (such
as running): +
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| EXAMPLES
OF MODERATE AMOUNTS OF ACTIVITY |
Washing and waxing a car for
45-60 minutes
Washing windows or floors for 45-60 minutes
Playing volleyball for 45 minutes
Playing touch football for 30-45 minutes
Gardening for 30-45 minutes
Wheeling self in wheelchair for 30-40 minutes
Walking 1 3/4 miles in 35 minutes (20 min/mile)
Basketball (shooting baskets) for 30 minutes
Bicycling 5 miles in 30 minutes
Dancing fast (social) for 30 minutes
Pushing a stroller 1 1/2 miles in 30 minutes
Raking leaves for 30 minutes
Walking 2 miles in 30 minutes (15 min/mile)
Water aerobics for 30 minutes
Swimming laps for 20 minutes
Wheelchair basketball for 20 minutes
Basketball (playing a game) for 15-20 minutes
Bicycling 4 miles in 15 minutes
Jumping rope for 15 minutes
Running 1 1/2 miles in 15 minutes (10 min/mile)
Shoveling snow for 15 minutes
Stairwalking for 15 minutes
|
Less
Vigorous,
More Time

More Vigorous,
Less Time |
* A moderate amount of physical
activity is roughly equivalent to physical activity that uses
approximately 150 Calories (kcal) of energy per day, or 1,000 Calories
per week.
+ Some activities can be performed at various intensities;
the suggested durations correspond to expected intensity of effort.
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| PRECAUTIONS
FOR A HEALTHY START |
To avoid soreness and injury,
individuals contemplating an increase in physical activity should start
out slowly and gradually build up to the desired amount to give the body
time to adjust. People with chronic health problems, such as heart
disease, diabetes, or obesity, or who are at high risk for these
problems should first consult a physician before beginning a new program
of physical activity. Also, men over age 40 and women over age 50 who
plan to begin a new vigorous physical activity program
should consult a physician first to be sure they do not have heart
disease or other health problems.
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| STATUS
OF THE NATION - A NEED FOR CHANGE |
Adults
- More than 60 percent of adults do not achieve
the recommended amount of regular physical activity. In fact, 25
percent of all adults are not active at all.
- Inactivity increases with age and is more
common among women than men and among those with lower income and
less education than among those with higher income or education.
Adolescents and Young
Adults
- Nearly half of young people aged 12-21 are
not vigorously active on a regular basis.
- Physical activity declines dramatically with
age during adolescence.
- Female adolescents are much less physically
active than male adolescents.
High School Students
- In high school, enrollment in daily physical
education classes dropped from 42 percent in 1991 to 25 percent in
1995.
- Only 19 percent of all high school students
are physically active for 20 minutes or more in physical education
classes every day during the school week.
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| IDEAS
FOR IMPROVEMENT |
This report identifies promising
ways to help people include more physical activity in their daily lives.
- Well-designed programs in schools to increase
physical activity in physical education classes have been shown to
be effective.
- Carefully planned counseling by health care
providers and worksite activity programs can increase individuals'
physical activity levels.
- Promising approaches being tried in some
communities around the nation include opening school buildings and
shopping malls for walking before or after regular hours, as well as
building bicycle and walking paths separated from automobile
traffic. Revising building codes to require accessible stairwells is
another idea that has been suggested.
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