Featured Research

from universities, journals, and other organizations

Nutritious Frozen Foods Can Play Role In Weight-loss Programs

Date:
June 15, 2005
Source:
University of Illinois at Urbana-Champaign
Summary:
Size matters when it comes to meal portions in weight-loss diets, according to researchers at the University of Illinois at Urbana-Champaign. And consuming convenient, nutritious frozen dinners may be a way to control portion size.

Research dietician LeaAnn Carson found that packaged frozen entrées helped research subjects loose more weight compared with the subjects who made their own meals following the food pyramid.
Credit: Photo by Clark Brooks

CHAMPAIGN, Ill. — Size matters when it comes to meal portions in weight-loss diets, according to researchers at the University of Illinois at Urbana-Champaign. And consuming convenient, nutritious frozen dinners may be a way to control portion size.

Research dietitians Sandra M. Hannum and LeaAnn Carson, who work in the laboratory of food science and human nutrition professor John W. Erdman, studied how two diet regimens resulted in weight loss in overweight and obese men. Their findings will appear in the journal Diabetes, Obesity and Metabolism. The study was placed online by the journal last month.

Subjects following the first of the diets ate a self-selected regimen based on the Food Guide Pyramid, a nutrition plan established by the U.S. Department of Agriculture in 1992. Subjects following the second diet ate two packaged entrées each day plus recommended servings from the food pyramid. Both diets contained about 1,700 daily calories with equal amounts of carbohydrates, protein and fat.

Subjects in the packaged-entrée group chose from 24 varieties of Uncle Ben’s bowls, a brand of frozen entrées produced by Masterfoods USA of Vernon, Calif. Masterfoods provided the meals for the subjects and funded the study.

Prior to the study, subjects in both diet groups reported daily consumption of about 2,400 calories. Subjects weighed about 97 kilograms (214 pounds) with a body mass index (BMI) ranging from 26 to 42 kilogram per meter squared, which qualified them as overweight to obese.

Over the course of the eight-week diet, all subjects reduced their daily caloric intake to about 1,700 calories and lost weight. Many subjects reported their surprise in feeling satiated by the diets.

Subjects who followed the frozen-entrée diet lost more weight (7.4 kg or 16.3 pounds) compared with the subjects who made their own meals following the food pyramid (5.1 kg or 11.2 pounds). Also, the average BMI decrease was one unit greater in subjects following the frozen-entrée diet than subjects following the food-pyramid diet.

These findings replicate the researchers’ findings in overweight and obese women, which were published in the March 2004 issue of the journal Obesity Research.

Hannum and Carson and their colleagues attribute the greater weight loss among the frozen-entrée eaters to the automatic portion control built into that diet, whereas subjects following the pyramid diet had to make their own meals. “The pyramid group had to figure out what to eat, and estimate how much they actually consumed,” Hannum said. “There was much more room for error.”

After the Illinois studies had finished, the USDA announced a new food pyramid, which allows people to customize their diets according to their age, gender and daily levels of physical activity. The greater complexity of the new pyramid may make this diet even more difficult for people to use, Hannum said.

Whether the participants maintain their new weight depends on whether they can maintain permanent diet changes, an ability that varies across individuals. The study succeeded by pointing many of its subjects in the right direction of portion control.

Because of busy lifestyles, many people eat at restaurants rather than take the time to cook at home. Research in other laboratories has shown that people tend to eat the amount of food that they are served, including large restaurant portions.

“Many of our subjects said that the study was the kick they needed to think about portion size,” Hannum said.

Other contributors to the study were Emily L. Petr and Christopher M. Wharton, former graduate students who earned master’s degrees in the food science and human nutrition department at Illinois; Linh Bui of Masterfoods USA; and Ellen Evans, professor of nutritional sciences in the kinesiology and community health department at Illinois.


Story Source:

The above story is based on materials provided by University of Illinois at Urbana-Champaign. Note: Materials may be edited for content and length.


Cite This Page:

University of Illinois at Urbana-Champaign. "Nutritious Frozen Foods Can Play Role In Weight-loss Programs." ScienceDaily. ScienceDaily, 15 June 2005. <www.sciencedaily.com/releases/2005/06/050614000600.htm>.
University of Illinois at Urbana-Champaign. (2005, June 15). Nutritious Frozen Foods Can Play Role In Weight-loss Programs. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2005/06/050614000600.htm
University of Illinois at Urbana-Champaign. "Nutritious Frozen Foods Can Play Role In Weight-loss Programs." ScienceDaily. www.sciencedaily.com/releases/2005/06/050614000600.htm (accessed October 20, 2014).

Share This



More Health & Medicine News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Microneedle Patch Promises Painless Pricks

Microneedle Patch Promises Painless Pricks

Reuters - Innovations Video Online (Oct. 18, 2014) — Researchers at The National University of Singapore have invented a new microneedle patch that could offer a faster and less painful delivery of drugs such as insulin and painkillers. Video provided by Reuters
Powered by NewsLook.com
Raw: Nurse Nina Pham Arrives in Maryland

Raw: Nurse Nina Pham Arrives in Maryland

AP (Oct. 17, 2014) — The first nurse to be diagnosed with Ebola at a Dallas hospital walked down the stairs of an executive jet into an ambulance at an airport in Frederick, Maryland, on Thursday. Pham will be treated at the National Institutes of Health. (Oct. 16) Video provided by AP
Powered by NewsLook.com
Raw: Cruise Ship Returns to US Over Ebola Fears

Raw: Cruise Ship Returns to US Over Ebola Fears

AP (Oct. 17, 2014) — A Caribbean cruise ship carrying a Dallas health care worker who is being monitored for signs of the Ebola virus is heading back to Texas, US, after being refused permission to dock in Cozumel, Mexico. (Oct. 17) Video provided by AP
Powered by NewsLook.com
Spanish Govt: Four Suspected Ebola Cases in Spain Test Negative

Spanish Govt: Four Suspected Ebola Cases in Spain Test Negative

AFP (Oct. 17, 2014) — All four suspected Ebola cases admitted to hospitals in Spain on Thursday have tested negative for the deadly virus in a first round of tests, the government said Friday. Duration: 00:55 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins