Category Weight Loss, Weight Control,
Hypnosis and Hypnotherapy, Slimming, Dieting, Obesity,
Health and Fitness, ...
obese women more impulsive than other females
A study in the November 08 issue of the journal Appetite
finds that obese women display significantly weaker impulse
control than normal-weight women, but between obese and
normal-weight men, the impulsivity levels are nearly the
same. The study was conducted by researchers in the
University of Alabama at Birmingham (UAB) Department of
As the nation's
rapidly expanding waistline puts a significant stress on the
healthcare system - causing headaches for healthcare
providers, employers, politicians, and patients themselves -
health clubs, weight loss centers, and clever fast
food outlets are reaping the rewards from an increasingly
overweight nation, according to Mr. George Van Horn, senior
analyst with IBISWorld, Inc.
Overweight, Obese Women
Improve Quality of Life With 10 to 30 Minutes of Exercise
Sedentary, overweight or obese
women can improve their quality of life by exercising as
little as 10 to 30 minutes a day, researchers reported at
the American Heart Association's Conference on Nutrition,
Physical Activity and Metabolism.
The Dose Response to Exercise in postmenopausal Women (DREW)
study, first reported in 2007, was the largest randomized,
controlled trial examining the role of exercise in
postmenopausal women. These secondary results focus on
quality of life among 430 women divided into four groups:
three groups exercising at various levels and one control
group that did not exercise.
"While the women who participated in the highest exercise
group saw the greatest improvements in most quality of life
scales, the women in the lowest exercise group also saw
improvements," said Angela Thompson, M.S.P.H., co-author of
the study and research associate at Pennington Biomedical
Research Center in Baton Rouge, La. "The public health
message is tremendous, because it provides further support
for the notion that even if someone cannot exercise an hour
or more daily, getting out and exercising 10 to 30 minutes
per day is beneficial, too."
All participants in the exercise groups reported a
statistically significant improvement in social functioning
compared to those in the control group of women who didn't
exercise. However, women who participated in more exercise,
from 135 to 150 minutes a week, also showed significant
improvements in general health, vitality and mental health.
The women who exercised more also improved in physical
functioning, role limitations in work or other activities
due to physical problems and role limitations due to
emotional problems, the researchers said. None of the women
reported a statistically significant improvement in pain.
After exercising six months, the women improved almost 7
percent 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.
"This has not been shown in a large controlled study
before," said Timothy S. Church, M.D., principal
investigator and research director at Pennington Biomedical
Research Center. "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."
This study included 430 sedentary women, average age 57, who
were overweight or obese. Researchers randomly assigned
women to one of three exercise groups, including those
expending about four kilocalories per kilogram (kcal/kg) of
energy each week amounting to 70 minutes a week; 8
kcal/kg/week amounting to 135 minutes per week; or 12
kcal/kg/week amounting to 190 minutes a week. Most of the
exercise was divided into three or four sessions a week.
When not in organized exercise, these women were fitted with
pedometers. A fourth group had no planned exercise and
served as controls.
Researchers measured quality of life before and after the
six-month exercise intervention with the Medical Outcomes
Study Short-Form 36 Health Status Survey. The scores were
adjusted for ethnicity, age, employment status, smoking,
antidepressant use and marital status.
To determine physical health, women were asked about
physical functioning such as what types of physical
activities they participated in from carrying groceries to
climbing stairs to walking a mile; limitations in physical
activity; pain; and their own assessment of their health.
Researchers determined mental health by having the women do
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.
Though the women in the study were overweight or obese,
sedentary and postmenopausal, they were fairly healthy and
reported a fairly high quality of life at baseline.
"At baseline the average vitality and role emotional scores
for these women were lower than for the U.S. population,"
Thompson said. "At follow-up, the average vitality and role
emotional scores were higher than the average U.S.
The data showed a positive association between six months of
exercise and changes in quality of life. "This association
was strongest among the group who received the highest dose
of exercise, which was 150 percent of the National Institute
of Health's Consensus Development recommended physical
activity dose," Thompson said. "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
Many of the women grew up when females didn't participate in
sports and most had never been physically active before. The
research program included a team to teach the women how to
"Walking a little bit every day will help tremendously,"
Thompson said. "Walk with your mother, a neighbor or friend.
A little physical activity will improve your quality of
Researchers also advised older women to join gyms that have
specific sections for women or that are targeted at women.
"Physical activity not only provides a better quality of
life but better balance, stronger bones and confidence in
walking," 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."
Church and Thompson's co-author is Steven N. Blair, P.E.D.
The National Institutes of Health funded the study.
Statements and conclusions of abstract authors that are
presented at American Heart Association/American Stroke
Association scientific meetings are solely those of the
abstract authors and do not necessarily reflect association
policy or position. The associations make no representation
or warranty as to their accuracy or reliability.
Source: American Heart Association
Encyclopedia and Internet Press Office
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