Overweight and Obesity, Weight Loss
Conditions
Keywords
Obese, Overweight, Weight loss, West Africa
Brief summary
The purpose of this study is to test two versions a weight loss program potentially suitable for implementation in Africa. A successful method would have widespread application in low-income countries, with the potential to improve world health.
Detailed description
Specific Aim 1 is to conduct a 3-4 month pilot study randomizing participants to two versions of a weight loss program. The program will be implemented in a convenience sample of overweight and obese adults living in Guinea-Bissau and measure changes in body weight loss (primary outcome), adherence to program recommendations including recommended food patterns, blood pressure, eating behavior, physical activity and mood (secondary outcomes). The data will be used to refine the weight loss program and conduct power calculations for a future trial. Specific Aim 2 is to analyze associations between weight loss, participant demographics and program metrics, to explore reasons for differences in weight loss between participants. Factors to be tested include participant BMI, gender and age, as well as adherence to meal portion recommendations, use of sugar-sweetened beverages and provided foods, and physical activity.
Interventions
COMBINATION_PRODUCTIntervention 1
Intervention 1 includes providing participants with a high fiber food product, protein source, high intensity sweetener and adult multivitamin.
COMBINATION_PRODUCTIntervention 2
Intervention 2 includes providing participants with an alternative dietary fiber source, milk protein, high intensitysweetener and adult multivitamin.
Sponsors
USDA Human Nutrition Research Center on Aging
Tufts University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
20 Years to 65 Years
Healthy volunteers
Yes
Inclusion criteria
* Men and women who are overweight or obese (BMI ≥25 kg/m2). * Want to lose weight, want to enroll in the study and are willing to sign the informed consent form. * Anticipate being able to meet the study requirements for food habits and study meetings, and anticipate remaining in Bissau for the study duration. * Between the ages of 20 to 65 years. * Non-pregnant women, and those who do not intend on becoming pregnant during the course of the study. * A doctor or nurse has signed a note approving participant in the weight loss intervention after seeing a copy of the handout with title Instructions for Bissau Weight Loss Pilot Project, and a copy of his/her approval is given to the research staff.
Exclusion criteria
* Report food allergies or intolerance or health conditions that would prevent consumption of provided and recommended foods. * Participation in another concurrent nutrition research study. * If premenopausal (\<55 years of age), they are pregnant or intend to become pregnant during the course of the study, or are not using a birth control method to prevent pregnancy.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in weight | Week 1 - week 12 | Primary outcome is weight change between baseline and endline. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Blood Pressure | baseline, week 12 | A secondary outcome is change in blood pressure between baseline and endline. |
| Change in self-reported measures of eating behavior. | baseline, week 12 | Self-administered Three Factor Eating Questionnaire will be used to capture participants eating behavior between baseline and endline. |
| Change in self-reported measures of mood. | baseline, week 12 | Self-administered Profile of Mood States Questionnaire will be used to capture participants mood between baseline and endline. |
| Intervention Adherence | week 1 - week 12 | Adherence to the designated intervention will be measured by self-reported dietary intake. |
| Change in self-reported demographics | baseline, week 12 | A self administered demographics survey measures education, occupation, dietary food frequency and food security. |
| Change in Height | Week 1, week 12 | A secondary outcome is change in height between baseline and endline. |
| Change in self-reported measures of physical activity. | baseline, week 12 | Self-administered International Physical Activity Questionnaire will be used to capture participants physical activity between baseline and endline. |
Countries
Guinea-Bissau
Outcome results
None listed