Nutrition, Exercise, and Technology for Weight Loss

This 4-month randomized controlled trial is designed to investigate the short-term efficacy
and feasibility of a novel, social support-enhanced behavioral weight control intervention.
Participants will be recruited via email listservs, fliers, and word of mouth. They will be
randomized to a standard behavioral weight control treatment (SBT) or a social
support-enhanced behavioral weight control treatment which receives the same intervention as
SBT plus social support resources (specifically, additional self-monitoring technologies) for
weight loss.

Inclusion Criteria:

- Body mass index (BMI) between 25 kg/m2 and 55 kg/m2

- Age 18 years or older

- Access to a computer with an Internet connection

- Smartphone ownership (Android or iOS)

- Willing to be randomized to either one of the two study groups

- Only one member of the same household eligible to participate

Exclusion Criteria:

- Currently lactating, pregnant, or planning to become pregnant during the length of the
study

- Been diagnosed with type 1 or type 2 diabetes

- Medical or physical contraindications or limitations for engaging in physical activity

- History of major medical or psychiatric conditions

- Recent changes in medication known to affect weight

- Schedule that would prohibit or restrict attendance at a designated time for weekly
in- person group meetings

- Currently participating in a weight management program

- Currently on medication that might affect weight loss