Obesity and Overweight
Conditions
Brief summary
The study compares the effectiveness of three commercial weight management programs. The primary outcome is absolute and percentage weight change at 12-weeks.
Interventions
BEHAVIORALCommercial weight management program
Participants will receive evidence-based behavioral / lifestyle support from a commercial weight management program.
Sponsors
WW International Inc
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* 18 years or older * BMI ≥27 kg/m² * Own a bodyweight scale that they can weigh themselves with during the study * Willing and able to comply with study protocol * Capable of providing informed consent * Able to read and write in English * Willing to be randomized * Willing to sign a Non Disclosure Agreement
Exclusion criteria
* Pregnant, lactating, or plans to become pregnant in the next 6 months * Previous bariatric surgery or planned bariatric surgery during the study period * Major surgery within the past 6 months or plans to have surgery during the study period * Participation in the previous 3 months or current participation in a structured behavioral weight loss program * Participation in another structured weight loss program during the study period (i.e., the next 3 months) * Communication needs that would render them unable to understand the study and/or intervention materials * Current or previous history of anorexia or bulimia nervosa * Engagement with vomiting or laxative use within the last 28 days with the aim of controlling their shape or weight * Currently taking anti-obesity medications, planning to take anti-obesity medications in the next 6 months, or previously taken anti-obesity medications in the previous 3 months * Weight loss of ≥ 5 kg (11 lb) in the previous 6 months * Self-reported diagnosis of severe depression, bipolar disorder, substance abuse, or psychosis * Participants who are involved in any other research studies at this time * Untreated thyroid disease or any changes (type or dose) in thyroid medication in last 6 months * Chronic/inflammatory gastrointestinal disorders (irritable bowel syndrome is acceptable) * History of heart problems (e.g., angina, bypass surgery, myocardial infarction, etc.) within previous 6 months * Diagnosis of type 1 or type 2 diabetes * Presence of implanted cardiac defibrillator or pacemaker * History of cancer within past 5 years or current treatment for cancer * Hospitalization for psychiatric disorders during the last 12 months
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Percent body weight lost at 12 weeks | Baseline, 4 weeks, 8 weeks, 12 weeks | Measurement of weight using a body weight scale |
| Change in body weight (in kg or pounds) at 12 weeks | Baseline, 4 weeks, 8 weeks, 12 weeks | Measurement of weight using a body weight scale |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Physical Activity and Sedentary Behavior | Baseline, 12 weeks | Global Physical Activity Questionnaire (GPAQ) |
| Dietary intake | Baseline, 12 weeks | Diet ID, powered by Diet Quality Photo Navigation (DQPN®) |
| Hunger | Baseline, 12 weeks | Hunger VAS (Visual Analogue Scale) |
| Impact of Weight on Quality | Baseline, 12 weeks | Impact of Weight on Quality of Life-Lite (IWQOL-Lite) |
| Wellbeing | Baseline, 12 weeks | World Health Organization (WHO-5) |
| Body appreciation | Baseline, 12 weeks | Body Appreciation Scale (BAS-2) |
| Self-Compassion | Baseline, 12 weeks | Self-Compassion Scale (SCS) |
| Weight Bias Internalization | Baseline, 12 weeks | Weight Bias Internalization Scale (WBIS-2F) |
| Food cravings | Baseline, 12 weeks | Food Cravings Inventory (FCI-II) |
Countries
United States
Contacts
PRINCIPAL_INVESTIGATORKara Marlatt, PhD, MPH
WW International Inc
Outcome results
None listed