Weight Watchers vs. fitness centers

Jul 02, 2008

In the first study of its kind, using sophisticated methods to measure body composition, the nationally known commercial weight loss program, Weight Watchers, was compared to gym membership programs to find out which method wins in the game of good health. A University of Missouri researcher examined the real-life experiences of participants to determine which program helps people lose pounds, reduce body fat and gain health benefits. The answer is that both have pros and cons and that a combination of the two produces the best results.

Participants who attended Weight Watchers for 12 weeks lost an average of 5 percent of their body weight, or about nine pounds. However, Steve Ball, assistant professor of exercise physiology in the MU College of Human Environmental Sciences, found that a large percentage of the lost weight was lean tissue and not fat.

"Participants' body fat percentage did not improve at all because they lost a much higher percentage than expected of lean tissue," said Ball, MU Extension state fitness specialist. "It is advantageous to keep lean tissue because it is correlated with higher metabolism. Losing lean tissue often slows metabolism. What your body is made of is more important than what you weigh."

The majority of other Weight Watcher studies had not considered body fat percentage change and only focused on body weight.

"This is one aspect of our study that makes it unique," Ball said. "We used a sophisticated measure of body composition – the Bod Pod – to look at what type of weight was lost: lean or fat."

In addition, Ball said the study was novel because Computer Tomography (CT scans) were used to investigate changes in abdominal fat, which is more predictive of cardiovascular disease. Although the fitness center group lost very little weight, they probably improved their health because they lost a significant amount of intraabdominal fat (fat around vital organs). These results imply that exercise may have positive influence on the metabolic syndrome despite the number on the scale, Ball concluded.

Ball also found that group support is very important. Most of the Weight Watchers participants stuck with the program during the duration of the study, while many of the fitness center participants quit.

"These results imply that overweight, sedentary women joining a fitness center with the intent of weight loss or body fat change will likely fail without support and without altering their diets," Ball said. "Nearly 50 percent of people who start an exercise program will quit within six months."

"This study attempted to discover what takes place in the real world when overweight women attempt to lose weight." Ball said. "I think the outcome of the study speaks volumes about the necessity for a multi-pronged approach in order to lose weight, body fat and gain health benefits. I hope that this will be the first in a series of studies investigating commercial weight-loss programs."

The study – "Comparison of a Commercial Weight Loss Program to a Fitness Center" – was published online in the June edition of the Journal of Exercise Physiology.

Source: University of Missouri-Columbia

Explore further: GBP10 billion GP incentive scheme has no impact on premature deaths

add to favorites email to friend print save as pdf

Related Stories

Calorie-burning vest makes use of cold exposure

Feb 12, 2015

"Give fat the cold shoulder." That is the catchy advice in a video of a scientist who believes he is on to something to support weight loss, and that is The Cold Shoulder calorie-burning vest. Dr. Wayne B. ...

Gift Guide: Home products come with connectivity

Dec 18, 2014

Do you really need an app to tell you to brush and floss? It seems every household appliance is getting some smarts these days, meaning some connection to a phone app and the broader Internet. But then what?

Scientists find key to vitamin A metabolism

Dec 10, 2014

Researchers at Case Western Reserve University School of Medicine have uncovered the mechanism that enables the enzyme Lecithin: retinol acyltransferase (LRAT) to store vitamin A—a process that is indispensable ...

Recommended for you

Irregular sleeping pattern may affect how teens eat

11 minutes ago

Day-to-day changes in how long your teen sleeps at night might be affecting how much they eat, according to new research presented at the American Heart Association EPI/Lifestyle 2015 meeting.

How healthy is genetically modified soybean oil?

1 hour ago

Soybean oil accounts for more than 90 percent of all the seed oil production in the United States. Genetically modified (GM) soybean oil, made from seeds of GM soybean plants, was recently introduced into the food supply ...

FDA study finds little evidence of antibiotics in milk

1 hour ago

In an encouraging development for consumers worried about antibiotics in their milk, a new Food and Drug Administration study showed little evidence of drug contamination after surveying almost 2,000 dairy ...

Oxytocin nasal spray causes men to eat fewer calories

2 hours ago

A synthetic nasal formulation of the hormone oxytocin reduced caloric intake in healthy men, particularly consumption of fatty foods, after a single treatment, a new study finds. The results, to be presented Sunday at The ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.