A NEW VIEW OF PHYSICAL ACTIVITY
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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
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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
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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?
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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
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Less Vigorous, More Time
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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
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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
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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
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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
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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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SPECIAL MESSAGES FOR SPECIAL POPULATIONS
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- Older Adults
- No one is too old to enjoy the
benefits of regular physical activity. Of special interest to older adults is
evidence that muscle-strengthening exercises can reduce the risk of falling and
fracturing bones and can improve the ability to live independently.
- Parents
- Parents can help their children
maintain a physically active lifestyle by providing encouragement and
opportunities for physical activity. Family events can include opportunities
for everyone in the family to be active.
- Teenagers
- Regular physical activity
improves strength, builds lean muscle, and decreases body fat. It can build
stronger bones to last a lifetime.
- Dieters
- Regular physical activity burns
Calories and preserves lean muscle mass. It is a key component of any weight
loss effort and is important for controlling weight.
- People with High Blood
Pressure
- Regular physical activity helps
lower blood pressure.
- People Feeling Anxious,
Depressed, or Moody
- Regular physical activity
improves mood, helps relieve depression, and increases feelings of well-being.
- People with Arthritis
- Regular physical activity can
help control joint swelling and pain. Physical activity of the type and amount
recommended for health has not been shown to cause arthritis.
- People with Disabilities
- Regular physical activity can
help people with chronic, disabling conditions improve their stamina and muscle
strength and can improve psychological well-being and quality of life by
increasing the ability to perform activities of daily life.
- For more information
contact:
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Centers for Disease
Control and Prevention National Center for Chronic Disease Prevention and
Health Promotion Division of Nutrition and Physical Activity, MS K-46
4770 Buford Highway, NE Atlanta, Georgia 30341-3724 1-888-CDC-4NRG or
1-888-232-4674 (Toll Free) http://www.cdc.gov
The President's Council on
Physical Fitness and Sports Box SG Suite 250 701 Pennsylvania
Avenue, NW Washington, DC 20004
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