In a new study published by the American Journal of Preventive Medicine, UMass Medical School behavioral psychologist and weight loss expert Sherry Pagoto, PhD, and colleagues find that mobile apps to help people lose weight are lacking when it comes to strategies for changing behaviors.
"Apps do include evidence-based behavioral strategies, but only a narrow range," said Dr. Pagoto, associate professor of medicine at UMass Medical School. "Strategies that often were missing are ones that help patients with adherence and motivation." In the study "Evidence-based strategies in weight-loss mobile apps," published online Oct. 8, Pagoto and colleagues rated 30 of the most popular mobile weight-loss apps on the market for inclusion of 20 evidence-based behavioral strategies. Most of the apps evaluated include few or no behavioral weight-loss strategies—28 out of 30 included only 25 percent of the strategies or less.
Even the top two apps include only 65 percent of the 20 strategies. Behavioral weight-loss strategies that are evidence-based—meaning they have been scientifically researched and found to be effective—include stimulus willpower control, problem solving, stress reduction and relapse prevention. The 20 strategies that the study rated are those in the Centers for Disease Control's evidence-based Diabetes Prevention Plan, designed to help participants make modest behavior changes in order to lose 5 to 7 percent of their body weight. Pagoto's team was also interested in determining whether apps incorporate technology features to enhance behavioral strategies.