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Coaches Can Help Weight Loss—New Miriam Research

Tuesday, July 31, 2012

 

New research at the Miriam Hospital shows the real benefit of "health coaches" in weight loss. Photo: Alan Cleaver/flickr.

With the Olympics in full swing, coaches are in the spotlight almost as much as their athletes. And new research from The Miriam Hospital’s Weight Control and Diabetes Research Center reveals that "Health Coaches" are as important to weight loss as a sport coach is to an athlete.

In the first study of its kind, published online in Obesity, Miriam researchers found that obese individuals participating in a low-intensity behavioral weight loss program who were supported by either a professional health coach or a peer coach lost clinically significant amounts of weight (at least 5 percent of their initial body weight). These weight losses are comparable to the amount of weight lost by patients participating in a more intensive behavioral intervention with twice as many treatment sessions.

Coaches for weight loss

“Our study suggests health coaches may not only yield impressive weight loss outcomes, but that lay – or peer – health coaching may be particularly promising as a cost-effective obesity treatment strategy,” said lead author Tricia M. Leahey, Ph.D., of The Miriam Hospital’s Weight Control and Diabetes Research Center. “Although these findings are only preliminary, it’s encouraging that lay health coaches successfully supplemented a less intensive, lower cost behavioral intervention and that their weight losses were actually comparable to those produced by professional coaches – something that could be critical in this changing health care landscape.”

Obesity remains a common, serious and costly disease in the United States. About one-third of American adults are obese, according to the Centers for Disease Control and Prevention, and no state has met the nation’s Healthy People 2010 goal to lower obesity prevalence to 15 percent. Obesity and its associated health problems, including heart disease and diabetes, continue to have a significant economic impact on the U.S. health care system, costing the nation hundreds of billions of dollars each year.

Health coaches

Health coaches have grown in popularity, yet empirical support is limited. In the health coach treatment model, health coaches supplement treatment by providing ongoing support, accountability and information to promote behavior change between treatment visits. Health coaches can be professional health care providers, such as nurses or social workers; peers, or individuals currently facing the same health problem who coach one another to support behavior change; and mentors, or master coaches, who have previously and successfully faced the same health situation.

In this randomized controlled pilot study, 44 participants took part in a group behavioral weight loss program that met for 12 times over the course of 24 weeks – half the amount of sessions of a traditional treatment plan. Groups met weekly for the first six weeks, biweekly for the following six weeks and monthly thereafter.

Miriam researchers randomly assigned individuals to work with one of three different types of health coaches: a professional (behavioral weight loss interventionist), peer (a fellow group member) or mentor (a successful weight loser). During the weeks where there were no group meetings, participants emailed their weekly weight, calorie and physical activity information to their coach and received feedback. All coaches were trained on appropriate coaching strategies and feedback delivery.

While all three groups yielded clinically significant weight losses, participants guided by professional and peer coaches had the most success, losing more than 9 percent of their body weight on average, compared to just under 6 percent in the mentor group. At least half of the participants in the professional and peer coaching groups achieved a 10 percent weight loss, which research has shown can  reduce the risk of a wide range of illnesses linked to obesity, including heart disease and diabetes. Only 17 percent of those in the mentor group accomplished this goal.

Next steps

Because it is a pilot study, Leahey notes larger trials are needed to confirm whether incorporating health coaching into less intensive behavioral weight loss treatment programs improves outcomes and to examine which type of coach is most effective. She recently received a 5-year, $2 million grant from the National Institutes of Health to continue to explore the impact and influence of lay health coaches for obesity treatment.

The study was funded by the National Institutes of Health. Rena R. Wing, Ph.D., director of the Weight Control and Diabetes Research Center at The Miriam Hospital, and a professor of psychiatry/human behavior at The Warren Alpert Medical School of Brown University, was the study co-author.

The principal affiliation of Tricia M. Leahey, Ph.D., is The Miriam Hospital (a member hospital of the Lifespan health system in Rhode Island) and direct financial and infrastructure support for this project was received through the Lifespan Office of Research Administration. Dr. Leahey is also an assistant professor of psychiatry/human behavior (research) at The Warren Alpert Medical School of Brown University.

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