Even a little exercise makes life better for overweight women
March 21, 2008Exercising for between 10 and 30 minutes a day can
improve the health and quality of life of women who are overweight or
obese, according to a study presented at the American Heart
Association's Conference on Nutrition, Physical Activity and
Metabolism.
The study involved 430 sedentary, postmenopausal women, average age
57, who were overweight or obese. Researchers divided the women into
four groups and assigned them to exercise either 70 minutes a week,
135 minutes a week, 190 minutes a week or not at all.
Most of the women's exercise took place in three to four sessions a
week. When not taking part in organized exercise, the women wore
pedometers.
In addition, researchers asked the women about physical functioning,
such as what types of activities they participated in, limitations in
physical activity, pain and their own assessments of their health.
The women also did a self-assessment of vitality, social time,
ability to accomplish what they set out to do, and whether they were
nervous, down in the dumps, peaceful or happy.
Overall, the women were fairly healthy and reported a good quality of
life when the study began. Even so, those who exercised experienced
improvements in function and quality of life.
After six months, the women who exercised experienced an almost 7
percent improvement in physical function and general health, 16.6
percent in vitality, 11.5 percent in performing work or other
activities, 11.6 percent in emotional health, and more than 5 percent
in social functioning.
Women who exercised also reported a significant improvement in social
functioning compared to women who didn't exercise.
Women who participated in the most exercise, from 135 to 150 minutes
a week, showed the most improvement in quality of life and physical
function.
"This is the first, large, controlled study of postmenopausal women
to look at the effect of exercise training on the quality of life. It
shows that exercise gives you energy and makes you feel better," said
Timothy S. Church, MD, the study's principal investigator.
Notably, the study found that improvements in quality of life were
not necessarily due to weight loss.
"Some of the women did lose weight over the course of the study, but
the self-reported improvement in quality of life was not dependent on
weight loss," said Angela Thompson, MSPH, co-author of the study.
Based on their findings, researchers advised older women to get
regular exercise by walking each day or by joining gyms that cater to
women or have specific sections for women.
"Physical activity not only provides a better quality of life, but
better balance, stronger bones and confidence in walking," Dr. Church
said. "Start exercising for small amounts of time and then gradually
work up to 150 minutes a week. A little is better than nothing."