NCT06875622

Brief Summary

The purpose of this trial is to compare two delivery formats for weight loss (automated online program vs. group-based videoconference program) and to examine the added effect of individual coaching (vs. no coaching) for individuals with overweight or obesity. All participants enrolled in this study will receive a 12-month behavioral weight loss program (varying in delivery format and individual support), and will be provided with weight loss, calorie intake, and exercise goals. Assessments will occur at baseline, 6 (mid-treatment), 12 (post-treatment), and 18 months (following 6 months of no intervention). We will also seek to determine which combination of intervention approaches works best for whom and develop algorithms which can be used to refer patients into remote programs in clinical settings or future trials.

Trial Health

77
On Track

Trial Health Score

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

Enrollment
490

participants targeted

Target at P75+ for not_applicable

Timeline
31mo left

Started Mar 2025

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
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 Progress32%
Mar 2025Oct 2028

Study Start

First participant enrolled

March 3, 2025

Completed
5 days until next milestone

First Submitted

Initial submission to the registry

March 8, 2025

Completed
5 days until next milestone

First Posted

Study publicly available on registry

March 13, 2025

Completed
3.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 27, 2028

Expected
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

October 31, 2028

Last Updated

March 18, 2025

Status Verified

March 1, 2025

Enrollment Period

3.2 years

First QC Date

March 8, 2025

Last Update Submit

March 14, 2025

Conditions

Keywords

behavioral weight lossremote interventionsdiet and exercise

Outcome Measures

Primary Outcomes (2)

  • Percent weight change

    Weight change will be assessed via smart scales using weight at baseline and 12 months and calculated as follows: (\[12-month weight minus baseline weight\] / baseline weight \* 100).

    12 months

  • Change in perceived support

    Perceived support will be measured via the Important Others Questionnaire. Scores on this questionnaire range from 12 to 84 with higher scores indicating a greater perception of support from important others. Change in perceived support will be calculated as follows: 12-month perceived support minus baseline perceived support.

    12 months

Secondary Outcomes (8)

  • Cost per kilogram of weight loss

    12 months

  • Percent weight change

    18 months

  • Frequency of self-monitoring weight

    12 months

  • Self-monitoring of calorie intake

    12 months

  • Change in self-efficacy for diet

    12 months

  • +3 more secondary outcomes

Study Arms (4)

Automated online program + coaching

EXPERIMENTAL

Participants randomized to this condition will receive a 12-month automated weight loss program delivered via the Internet plus monthly, individual coaching sessions delivered via videoconference.

Behavioral: Automated online weight loss programBehavioral: Individual coaching

Automated online program only

EXPERIMENTAL

Participants randomized to this condition will receive a 12-month automated weight loss program delivered via the Internet.

Behavioral: Automated online weight loss program

Group videoconference program + coaching

EXPERIMENTAL

Participants randomized to this condition will receive a 12-month, group-based behavioral weight loss program delivered via videoconference plus monthly, individual coaching sessions delivered via videoconference.

Behavioral: Individual coachingBehavioral: Group-based, videoconference-delivered weight loss

Group videoconference program only

EXPERIMENTAL

Participants randomized to this condition will receive a 12-month, group-based behavioral weight loss program delivered via videoconference.

Behavioral: Group-based, videoconference-delivered weight loss

Interventions

Participants receiving this program are given a daily calorie intake goal of 1200-1800 kcal/day based upon their starting weight and a moderate-intensity aerobic exercise (e.g., walking) goal which progresses to 250 min/week. They are instructed to self-monitor body weight, calorie intake, and exercise minutes daily over 12 months, and are provided with a smart scale for electronic transmission of weight data. Computer-generated, personalized feedback is based upon self-monitoring data, and provided weekly during months 1-3, twice per month during months 4-6, and monthly thereafter. Participants are also instructed to view a new multi-media video lesson weekly during months 1-3, 2x/month during months 4-6, and monthly thereafter (24 lessons in total). These videos are 10-15 minutes in duration and are intended to teach behavioral principles for losing weight, healthy eating, and exercise.

Automated online program + coachingAutomated online program only

Participants will receive monthly, one-on-one coaching sessions (12 in total) throughout the 12-month intervention period. Coaching sessions will be conducted via videoconference and the initial coaching session will be approximately 30 minutes and all remaining sessions will be approximately 15 minutes. The structure of the coaching sessions will be similar across participants, but the content will be tailored to the individual. Coaches will use goal setting, problem solving, and motivational interviewing to help facilitate adherence and achievement of weight loss program goals.

Automated online program + coachingGroup videoconference program + coaching

Participants receiving this program will be instructed to attend interactive group videoconference sessions (60 minutes each) focused on behavioral strategies for changing diet and exercise to promote weight loss. Classes will be weekly during months 1-3, twice per month during months 4-6, and monthly during months 7-12. These classes are designed to allow participants to interact with, support, and learn from one another. Participants are also given a daily calorie intake goal of 1200-1800 kcal/day based upon their starting weight and a moderate-intensity aerobic exercise (e.g., walking) goal which progresses to 250 min/week. They are instructed to self-monitor body weight, calorie intake, and exercise minutes daily over 12 months, and are provided with a smart scale for electronic transmission of weight data. Semi-automated, personalized feedback, based on self-monitoring data, is provided by the group instructor at the same frequency as group sessions are held.

Group videoconference program + coachingGroup videoconference program only

Eligibility Criteria

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

You may qualify if:

  • Body Mass Index between 25-45 kg/m2
  • Daily, home Internet access

You may not qualify if:

  • Currently pregnant, planning to become pregnant within the next 18 months, or pregnant within the past 6 months
  • Current or recent enrollment (\<2 years) in a weight loss program
  • Presence of any medical condition for which exercise, weight loss, or dietary restriction is contraindicated
  • Recent weight loss (≥10 pounds within the past 6 months)
  • Currently taking weight loss medications or history of bariatric surgery
  • Inability to walk 2 blocks without stopping
  • Non-English speaking
  • A member of one's household is participating in the study
  • History of anorexia or bulimia nervosa

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

The Miriam Hospital's Weight Control and Diabetes Research Center

Providence, Rhode Island, 02903, United States

RECRUITING

MeSH Terms

Conditions

ObesityMotor Activity

Condition Hierarchy (Ancestors)

OverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsBehavior

Central Study Contacts

Jessica L Unick, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 8, 2025

First Posted

March 13, 2025

Study Start

March 3, 2025

Primary Completion (Estimated)

April 27, 2028

Study Completion (Estimated)

October 31, 2028

Last Updated

March 18, 2025

Record last verified: 2025-03

Data Sharing

IPD Sharing
Will share
Shared Documents
STUDY PROTOCOL, SAP, ICF

Locations