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women's health, exercise is essential
Exercise is an
essential component of a healthful lifestyle for women as well as
men. Here are some of the health issues influenced by an active
lifestyle.
Medical researchers used
to say that exercise is probably just as good for women as it is for
men. Until recently, most of the research on the health benefits of
exercise included primarily male subjects. Fortunately, the past 20
years have produced a number of excellent studies that allow us to
say wholeheartedly that exercise is an essential component of a
healthful lifestyle for women as well as men. Here are some of the
health issues influenced by an active lifestyle.
Breast, reproductive and colon cancers
Several studies have found that regular physical activity decreases
a woman's risk of breast, ovarian and endometrial cancers. Risk for
these cancers rises with factors associated with increased estrogen
levels, such as early onset of puberty, late menopause and estrogen
replacement therapy. Some researchers have speculated that exercise
protects against these cancers by decreasing a woman's lifetime
exposure to estrogen. This protection may be attributed to
exercise's effect on body composition. People who exercise regularly
tend to be leaner; higher body fat levels are associated with higher
levels of estrogen. Protection may also come from the effect of
physical activity on the menstrual cycle. Some studies suggest that
female athletes experience more menstrual irregularity, which
results in lower lifetime estrogen exposure.
Physical activity is associated with reduced risk of colon cancer
for both men and women. Exercise may exert its protective effect by
speeding passage of stool through the colon, thus reducing exposure
of the intestinal lining to harmful substances.
Some researchers have proposed that physical activity decreases
cancer risk by increasing the immune response, allowing our immune
systems to fight cancerous cells. Or, it could be that people who
exercise develop other health habits that help prevent cancer, like
consuming low-fat diets. |
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Osteoporosis and fractures
Many women fear the loss of bone density that occurs with aging, and
especially the accelerated loss that occurs during the menopausal
years. Numerous studies underscore the importance of physical
activity throughout life for the development of maximal bone density
in young adulthood and the delay of bone mineral loss during middle
and old age. While most activities appear to help protect bone
density somewhat, activities that place more stress on muscles and
bones may lead to the greatest protection. It is for this reason
that strength training, such as weightlifting, may be especially
beneficial. Strength training also improves strength and balance,
which help prevent falls that lead to fracture.
Functional independence in old age
Women make up a majority of the older population. Many older women
live alone and are concerned about losing independence with
advancing age. Women are sometimes forced into institutional living
because they no longer have the strength to perform daily tasks such
as carrying groceries or going up stairs. Recent studies show that
high-intensity strength training can
lead to increases in muscle size and strength, even in the very old,
and
improve the quality of life. |
Heart disease
We have known for years that exercise reduces heart disease risk for
men. A few recent studies have shown this is true for women as well.
Exercise helps to prevent or control a number of important disorders
that increase heart disease risk, including diabetes, high blood
pressure, high blood cholesterol and triglycerides and obesity. Many
people still think only men get heart disease and fail to
realize heart disease is the leading cause of death in both women
and men.
Weight control
At least a third of North American women are overweight, which
places them at increased risk for diabetes, high blood pressure,
heart disease and cancer. The best way to control weight is with a
healthful, low-fat diet and plenty of regular exercise. Lifelong
physical activity is essential for weight control and good health.
Daily aerobic exercise, such as walking, dancing, swimming and
cycling, which burns calories and improves fitness, should be
combined with strength training when possible. Strength training
increases muscle size and raises metabolic rate, so women can eat
more without gaining weight.
Mental health
Perhaps most important of all exercise effects are the psychological
benefits that contribute to the quality of daily life. Regular
physical activity has been shown to reduce symptoms of depression
and improve the negative mood associated with premenstrual syndrome
and menopause.
By
Barbara A. Brehm, Ed.D., a professor of exercise and sport studies
at Smith College, Northampton, Mass.
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High-intensity
training is based on two simple procedures for enhancing the
strength-building stimulus. The first technique involves extending the
exercise repetition by using a slower movement.
To replace the muscle loss, bone loss and metabolic rate reduction
associated with the aging process,
older adults must
perform regular strength exercises.
An exercise program for older
adults should be individualized to their health concerns, physical
limitations (if any), fitness goals and interests.
Aerobic exercise at optimal levels of frequency, distance (time) and
intensity can markedly reduce
the risk of developing many of the chronic diseases commonly seen.
Game Day By
Alexis Gilmore. The noise from people cheering faded out by the
thoughts in my own head. As I’m dribbling down the court, I watch my
opponent and check for an open player on the court.
The long-term Psychological
benefits of exercise include reduced symptoms of chronic stress, anxiety
and depression, improved self-confidence and body image as well as improved
sleep quality.
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