NCT05659966

Brief Summary

The investigators will conduct a full dissemination and implementation study using a type 2 hybrid effectiveness-implementation design. The investigators will conduct this study in the community and work with two vegan soul food restaurants. The investigators propose to examine the effectiveness and implementation of community-delivered, 3-month NEW Soul program among participants (N=228). Using a randomized design, the investigators will assess effectiveness of two delivery approaches: (1) In-person, live weekly classes with restaurant vouchers (intervention) or (2) restaurant voucher-only (active control). The investigators will also conduct a cost-effectiveness analysis of delivering the online intervention plus voucher vs. voucher-only with the outcome of cost/change in weight, healthy eating index, and quality adjusted life year. Lastly, the investigators will examine the implementation of the NEW Soul study with participants and intervention staff.

Trial Health

75
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
228

participants targeted

Target at P75+ for not_applicable

Timeline
11mo left

Started Apr 2023

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
active not recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress78%
Apr 2023Mar 2027

First Submitted

Initial submission to the registry

December 5, 2022

Completed
16 days until next milestone

First Posted

Study publicly available on registry

December 21, 2022

Completed
3 months until next milestone

Study Start

First participant enrolled

April 3, 2023

Completed
4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 31, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 31, 2027

Last Updated

December 31, 2025

Status Verified

December 1, 2025

Enrollment Period

4 years

First QC Date

December 5, 2022

Last Update Submit

December 23, 2025

Conditions

Outcome Measures

Primary Outcomes (2)

  • Changes in body weight

    Changes in body weight in kilograms

    3-months

  • Changes in diet quality

    Changes in dietary quality as assessed by the Healthy Eating Index

    3-months

Secondary Outcomes (2)

  • Cost-effectiveness

    3-months

  • Implementation

    3-months

Study Arms (2)

Intervention

EXPERIMENTAL

The intervention condition participants will be instructed to follow a plant-based diet. The intervention participants will receive weekly group classes for 3 months at a local restaurant and will receive guidance on how to choose foods to meet their nutrient needs that fit within the vegan diet. The intervention participants will receive a voucher each week for a free plant-based meal at the restaurant.

Behavioral: Plant-based diet

Control

ACTIVE COMPARATOR

Participants in the active control condition will receive meal vouchers to the restaurant. The active control condition participants will not receive any instruction to follow a particular diet or support. Participants in this condition will receive all intervention material and attend a class at the end of the study to learn about the intervention diet.

Other: Voucher only

Interventions

Participants will receive a behavioral intervention on a plant-based diet in partnership with a local restaurant.

Intervention

Participants will receive vouchers to a local restaurant. Participants will not attend nutrition classes but will receive a class at the end of the 12-week study.

Control

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Self-identify as African American
  • Be between the ages of 18-65 years
  • Body Mass Index between 25- 49.9 kg/m2
  • Able to travel to restaurant for classes
  • Be able to attend all monitoring and weekly class visits
  • Be willing to be randomized to either group

You may not qualify if:

  • Currently following a plant-based diet
  • Diagnosed with diabetes that is controlled by medication
  • Currently pregnant or breastfeeding (or plan to become pregnant in the next 24 months)
  • Under the age of 18 years old
  • Over the age of 65 years old
  • Currently participating in a weight loss program
  • Has lost more than 10 pounds in the past 6 months
  • Potential eating disorder

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Mimsy's Restaurant

Columbia, South Carolina, 29228, United States

Location

MeSH Terms

Conditions

Feeding Behavior

Interventions

Diet, Plant-Based

Condition Hierarchy (Ancestors)

Behavior, AnimalBehavior

Intervention Hierarchy (Ancestors)

Diet TherapyNutrition TherapyTherapeuticsDietNutritional Physiological PhenomenaDiet, Food, and NutritionPhysiological Phenomena

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Associate Professor

Study Record Dates

First Submitted

December 5, 2022

First Posted

December 21, 2022

Study Start

April 3, 2023

Primary Completion (Estimated)

March 31, 2027

Study Completion (Estimated)

March 31, 2027

Last Updated

December 31, 2025

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will share

Upon reasonable request, data will be shared with other researchers. Data will not be publicly available to protect participant confidentiality. The informed consent document will include information that de-identified data may potentially be shared with other researchers.

Shared Documents
STUDY PROTOCOL
Time Frame
Upon reasonable request, participant data will be shared with other researchers.
Access Criteria
If granted, a password protected file with de-identified data of participants will be shared with other researchers.

Locations