Obesity, Weight Loss
Conditions
Keywords
obesity, weight loss, group size
Brief summary
The present study will assess whether the size of treatment groups (groups of 10 vs. 30 participants) affects short- and long-term weight loss. It is hypothesized that participants assigned to a small group will exhibit similar short-term and long-term weight losses (i.e., weight loss at months 6 and 12) as compared to those assigned to a large group.
Interventions
BEHAVIORALbehavioral weight loss program
weekly, group-based lifestyle weight loss program
Sponsors
Florida State University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* Adults (at least 21 years-old) * Health insurance coverage with Capital Health Plan (CHP) * Body mass index BMI between 30-45 kg/m2
Exclusion criteria
* BMI is less than 30 kg/m2 or greater than 45 kg/m2 * Weight loss \> 10 pounds in past 6 months * Acute or chronic illnesses for which weight loss is contraindicated * Unwilling or unable to give informed consent * Unwilling to accept random assignment * Unwilling or unable to travel to CHP clinic for assessments and groups * Likely to relocate out of the area in the next 12 months
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| change in weight from baseline to month 12 | 12 months |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| adherence to treatment protocol | 12 months | number and proportion of treatment sessions attended |
Countries
United States
Outcome results
None listed