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Purpose

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).

Condition

Eligibility

Eligible Ages
Between 50 Years and 79 Years
Eligible Sex
All
Accepts Healthy Volunteers
Yes

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

Study Design

Phase
N/A
Study Type
Interventional
Allocation
Randomized
Intervention Model
Single Group Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Active Comparator
MD-WL 		Mediterranean Diet Weight Loss
  • Behavioral: Social Network Curriculum
    Empowerment to share lifestyle change information within social networks
    Other names:
    • MD-WL SN
Active Comparator
MD-WL SN 		Mediterranean Diet Weight Loss Social Networks
  • Behavioral: Social Network Curriculum
    Empowerment to share lifestyle change information within social networks
    Other names:
    • MD-WL SN

Recruiting Locations

University of Illinois Chicago
Chicago, Illinois 60608
Contact:
Lara Blumstein, MA
7734903311
larabeth99@yahoo.com

More Details

Status
Recruiting
Sponsor
University of Illinois at Chicago

Study Contact

Lara Blumstein, MA
+1 77304903311
lbb@uic.edu

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.