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Old January 28th, 2004, 04:47 PM
tcomeau
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Default Study Links High-Carbs and Weight Loss

"zsklar" wrote in message om...
By LINDSEY TANNER, AP Medical Writer

CHICAGO - In the midst of the low-carb craze, a new study suggests that by
eating lots of carbohydrates and little fat, it is possible to lose weight
without actually cutting calories - and without exercising, either.

Related Links
. Study Abstract (AIM)



In Yahoo! Health


The study was small, consisting of just 34 overweight adults who either ate
the recommended diet for three months; ate the recommended diet and
exercised regularly; or ate pretty much what they usually eat.


All meals were prepared for participants, who were instructed to eat as much
as they wanted. They also were told to return any uneaten food, which the
researchers said enabled them to calculate calorie intake.


Many doctors dispute whether people can lose weight without reducing their
food intake, and at least one questioned the study's accuracy.


But the diet is more compatible with conventional notions of healthful
eating than the fatty, low-carbohydrate Atkins and South Beach diets.


Participants on the recommended diet lost about 7 pounds without cutting
calories and without exercise, and almost 11 pounds with 45 minutes of
stationary bike-riding four times weekly. The control group lost no weight.


snip


The successful diet was not tested against Atkins and other low-carb
regimens, which contain more fat and fewer carbs than the control group
diet.



---------------------------------
Effects of an Ad Libitum Low-Fat, High-Carbohydrate Diet on Body
Weight, Body Composition, and Fat Distribution in Older Men and Women
A Randomized Controlled Trial

Nicholas P. Hays, PhD; Raymond D. Starling, PhD; Xiaolan Liu, MD;
Dennis H. Sullivan, MD; Todd A. Trappe, PhD; James D. Fluckey, PhD;
William J. Evans, PhD


Arch Intern Med. 2004;164:210-217.

Background The efficacy of ad libitum low-fat diets in reducing body
weight and fat in overweight and obese adults remains controversial.

Methods We examined the effect of a 12-week low-fat, high–complex
carbohydrate diet alone (HI-CHO) and in combination with aerobic
exercise training (HI-CHO + EX) on body weight and composition in 34
individuals with impaired glucose tolerance (20 women and 14 men; mean
± SEM age, 66 ± 1 years). Participants were randomly assigned to a
control diet (41% fat, 14% protein, 45% carbohydrates, and 7 g of
fiber per 1000 kcal), a HI-CHO diet (18% fat, 19% protein, 63%
carbohydrates, and 26 g of fiber per 1000 kcal), or a HI-CHO diet plus
endurance exercise 4 d/wk, 45 min/d, at 80% peak oxygen consumption
(HI-CHO + EX). Participants were provided 150% of estimated energy
needs and were instructed to consume food ad libitum. Total food
intake, body composition, resting metabolic rate, and substrate
oxidation were measured.

Results There was no significant difference in total food intake
among the 3 groups and no change in energy intake over time. The
HI-CHO + EX and HI-CHO groups lost more body weight (–4.8 ± 0.9 kg [P
= .003] and –3.2 ± 1.2 kg [P = .02]) and a higher percentage of body
fat (–3.5% ± 0.7% [P = .01] and –2.2% ± 1.2% [P = .049]) than controls
(–0.1 ± 0.6 kg and 0.2% ± 0.6%). In addition, thigh fat area decreased
in the HI-CHO (P = .003) and HI-CHO + EX (P.001) groups compared with
controls. High carbohydrate intake and weight loss did not result in a
decreased resting metabolic rate or reduced fat oxidation.

Conclusion A high-carbohydrate diet consumed ad libitum, with no
attempt at energy restriction or change in energy intake, results in
losses of body weight and body fat in older men and women.


From the Nutrition, Metabolism, and Exercise Laboratory, Donald W.
Reynolds Department of Geriatrics, University of Arkansas for Medical
Sciences and Central Arkansas Veterans Healthcare System, Little Rock.
Dr Starling is now with Pfizer Global Research and Development,
Groton, Conn. The authors have no relevant financial interest in this
article.

-------------------------

About the authors:

Dennis H. Sullivan, M.D., Department of Geriatrics, University of
Arkansas for Medical Sciences, Little Rock. Research on feeding tubes
supported in part by Abbott Laboratories. (J. Amer. Coll. Nutr.
2000;19:446-50)


William J. Evans, PhD:

Oh lookee, the main author has written a book about.... dieting. And
it isn't a low-carb diet, big surprise. Published last May.

AstroFit: The Astronaut Program for Anti-Aging
by William J. Evans (Author), Gerald Secor Couzens (Author)
Paperback: 320 pages ; Dimensions (in inches): 0.81 x 8.42 x 5.53
Publisher: Free Press; (May 13, 2003)
ISBN: 0743216822

William J. Evans, Ph.D., a pioneer in the field of age reversal for
more than twenty years, has worked as an expert adviser to NASA on
nutrition and exercise since 1988, and is the former head of the
Nutrition, Physical Fitness, and Rapid Rehabilitation Team of the
National Space Biomedical Institution. He lives in Little Rock,
Arkansas, with his wife and three children. --This text refers to the
Hardcover edition.

http://www.amazon.com/exec/obidos/tg...glance&s=books

Gee I hope his study that found how good his diet is helps him make
the top ten bestsellers list.

At least Dr. Atkins had the ethics to let others do the studies on his
diet.

TC