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NCT Number: NCT07798557

BRIDGE & Friends Trial

Aim 1. Conduct a 6-month (24-session) RCT comparing MedDiet-WL to MedDiet-SN among 268 older adults with obesity (50-79 years, BMI = 30-50 kg/m²). We hypothesize that 1) Participants in MedDiet-SN will show improvements in bodyweight/BMI and body fat compared to MedDiet-WL at post-intervention (6-months), 2) Participants in MedDiet-SN will show improvements in diet (diet quality) and physical activity (step counts) compared to MedDiet-WL at post-intervention (6-months), and 3) Participants in MedDiet-SN will maintain these improvements at 12-months.

Aim 2. Characterize and compare differences in weight management information dissemination by 268 randomized to MedDiet-WL and MedDiet-SN. We hypothesize that MedDiet-SN participants will share information to more network members compared to participants in MedDiet-WL.

Aim 3. Compare MedDiet-SN and MedDiet-WL in 268 network members. We hypothesize that MedDiet-SN network members will show, greater improvements in BMI, body fat, diet, and physical activity than MedDiet-WL network members at 6 months. We will explore how effects may vary by network (e.g., density, relationships), and messaging characteristics (e.g., modality).

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Key information

Conditions

Obesity & Overweight Body Weight Nutrition Disorders Nutritional and Metabolic Diseases Obesity Overnutrition Overweight Pathological Conditions, Signs and Symptoms Signs and Symptoms

Age range

50 year–79 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Illinois Chicago

Chicago, Illinois, 60608, United States

Location status: Recruiting

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 50-79 yrs old,
  • BMI 30-50
  • Willing to participate in all procedures
  • Understand English
  • Willing to make changes to diet and lifestyle
  • Have access to a phone
  • Plan to reside in the Chicago area for the next 12 months

Exclusion criteria

  • Severe ischemic heart disease
  • Severe pulmonary disease
  • Bariatric surgery
  • Cancer treatment within the past 12 months
  • Current adherence to MedDiet based on dietary screening

Treatment and study plan

Social Network Curriculum

Behavioral

Empowerment to share lifestyle change information within social networks

Other names: MD-WL SN

Primary outcomes

  1. Physical Activity

    Time frame: 6 months

    Godin-Shephard Leisure Time Physical Activity Questionnaire

  2. Anthropometrics, Body Fat

    Time frame: 6 months

    BMI, body fat measure by stadiometer and scale

  3. Dietary Intake

    Time frame: 6 months

    Vioscreen Food Frequency Questionnaire

  4. Mediterranean Diet adherence

    Time frame: 6 months

    Mediterranean Eating Patterns for Americans (MEPA) is a 16-item screener that assesses adherence to a MedDiet pattern

Secondary outcomes

  1. Community Network Factors

    Time frame: 6 months

    General Social Survey Instrument, including support network size, characteristics, health information dissemination

Other outcomes

  1. Additional Measures for Co-Variates, Mediators and Moderators

    Time frame: 6 month

    Leadership & self efficacy. Promise- Quality of Life Questionnaire, Social Support, Intrinsic Motivation, Depression,

Interested in participating?

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Sponsors and collaborators

Lead sponsor

University of Illinois at Chicago

Other

Registry information

Official study title

Weight Management and Black American Women: Targeting Social Networks as a Strategy to Improve Outcomes (BRIDGE & Friends)

Important dates

Study start
2026
Primary completion
2029
Study completion
2029
First posted
Sep 1, 2026
Registry last updated
Sep 1, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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