Mobile Supportive Teams for Reinforcing Increased Daily Exercise Study (STRIDES)

October 13, 2025 updated by: Courtney Monroe, University of South Carolina

Using Existing Social Ties to Promote Physical Activity: Effects of Digitally Delivered Team Social Support Training

The goal of this research is to examine the addition of a digitally delivered social support training approach to an existing digital program designed to promote a physically active lifestyle among self-selected teams of adults who are not meeting physical activity guidelines. The main aims are to:

  1. Determine if the social support training intervention promotes significantly greater changes in moderate-to-vigorous intensity aerobic physical activity (such as a brisk walk) as measured by an accelerometer (research grade physical activity measurement device) at 3 months compared to the same intervention without social support training among self-selected teams of adults who are not meeting the physical activity guidelines.
  2. Determine if the social support training intervention promotes significantly greater changes in social support, motivation, accountability, and autonomy social support (free from excessive control and encouraging one's free will) at 3 months and 12 months compared to the same intervention without social support training.
  3. Determine if the social support training intervention promotes significantly greater changes in moderate-to-vigorous intensity aerobic physical activity as measured by an accelerometer at 12 months compared to the same intervention without social support training.
  4. Explore whether social support mediates increased and sustained moderate-to-vigorous intensity aerobic physical activity among the entire sample of participants.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Self-selected teams of 3-8 insufficiently active adults (about 60 teams comprised of a total of 300 participants) will be randomized to receive either a 3-month, theory-based, technology-delivered physical activity intervention characterized by personalized physical activity goals, a wearable physical activity tracker, electronic feedback, and behavior change modules embedded within a mobile-compatible app (Team) or the same intervention plus digitally delivered social support training (Team+Training). Outcome assessments will be completed at baseline, 3, and 12 months.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
300

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • South Carolina
      • Columbia, South Carolina, United States, 29208
        • Recruiting
        • University of South Carolina
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

Participants must:

  • be at least 18 years of age
  • be insufficiently physically active (< 150 minutes per week of moderate-intensity equivalent aerobic physical activity as measured by waist-worn accelerometer (research grade physical activity measurement device) - i.e., sum of time spent in minutes of moderate-intensity activity plus twice the minutes spent in vigorous-intensity activity < 150 minutes per week)
  • be part of a self-selected team of 3-8 individuals each of whom also meet all other eligibility criteria (members of the same household are only eligible to participate if they are on the same team - limit one team per household)
  • have access to a smartphone (Android or iphone operating system-based) with an internet connection
  • report being able to walk at least ¼ mile without stopping
  • be able to provide informed consent
  • complete all screening and baseline questionnaires and activities

Exclusion Criteria:

  • participating in another physical activity study or program
  • are pregnant, breastfeeding, less than 6 months post-partum, or plan to become pregnant during the time frame of the investigation
  • report a medical condition that would affect the safety and/or efficacy of a physical activity program (e.g., terminal illness; uncontrolled heart condition, dementia, bulimia nervosa or binge eating disorder, other significant psychiatric problems, or use of insulin)
  • report conditions that in the judgment of the Principal Investigator would render them unlikely to be able to independently follow the intervention protocol for 3 months, including conditions which might compromise their ability to engage independently with the intervention website materials and wearable physical activity tracker, as well as complete online questionnaires and adhere to wearing an accelerometer

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: Team Program
Teams randomized to this arm will be provided with personal physical activity goals focused on moderate-to-vigorous intensity aerobic physical activity minutes and steps. They will also be provided with a Fitibt wearable smartwatch for self-monitoring physical activity, receive weekly electronic feedback for the first month of the intervention about their physical activity progress, and have access to a mobile-compatible study web app containing behavior change content and physical activity progress information.
Behavioral: Mobile STRIDES app (psychoeducation features)
Twelve theory-based physical activity behavior change lessons/modules during the course of the 3-month intervention.
Behavioral: Mobile STRIDES app (self-regulation features)
Personalized physical activity goals focused on moderate-to-vigorous intensity aerobic physical activity and steps. Physical activity (tracked with a Fitbit wearable smartwatch and synced with the Mobile STRIDES app) tracking component, displaying team and individual progress. Weekly individualized feedback messages crafted by a trained professional for the first month of the intervention.
Experimental: Team+Training Program
Teams randomized to this arm will receive the same intervention as the Team study arm, as well as digitally delivered social support training.
Behavioral: Mobile STRIDES app (psychoeducation features)
Twelve theory-based physical activity behavior change lessons/modules during the course of the 3-month intervention.
Behavioral: Mobile STRIDES app (self-regulation features)
Personalized physical activity goals focused on moderate-to-vigorous intensity aerobic physical activity and steps. Physical activity (tracked with a Fitbit wearable smartwatch and synced with the Mobile STRIDES app) tracking component, displaying team and individual progress. Weekly individualized feedback messages crafted by a trained professional for the first month of the intervention.
Behavioral: Mobile STRIDES app (social support training features)
For the experimental group, the Mobile STRIDES app also includes five social support training lessons/modules (during the course of the 3-month intervention) focused on providing guidance related to effective communication when exchanging social support for physical activity within a team. In addition, six team feedback messages will be delivered to respective teams throughout the course of the 3-month intervention to reinforce content taught via the training lessons/modules. A weekly poll will also be administered that complements the social support training lessons, with cumulative results displayed.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Change in minutes per week of moderate-to-vigorous intensity aerobic physical activity (MVPA) at 3 months
Time Frame: Baseline and 3 months
Change in minutes per week of moderate-to-vigorous intensity aerobic physical activity (MVPA) from baseline to 3 months as measured by accelerometer
Baseline and 3 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change in minutes per week of moderate-to-vigorous intensity aerobic physical activity (MVPA) at 12 months
Time Frame: 3 months and 12 months
Change in minutes per week of moderate-to-vigorous intensity aerobic physical activity (MVPA) from 3 months to 12 months as measured by accelerometer
3 months and 12 months
Change in supportive accountability at 3 months
Time Frame: Baseline and 3 months
Support Accountability Inventory adapted for physical activity and to query about one's team. Items rated on a Likert scale response format ranging from 1 (Strongly Disagree) to 7 (Strongly Agree) with a not applicable option, with higher total scores indicating higher perceived supportive accountability.
Baseline and 3 months
Change in supportive accountability at 12 months
Time Frame: 3 months and 12 months
Support Accountability Inventory adapted for physical activity and to query about one's team. Items rated on a Likert scale response format ranging from 1 (Strongly Disagree) to 7 (Strongly Agree) with a not applicable option, with higher total scores indicating higher perceived supportive accountability.
3 months and 12 months
Change in autonomy support at 3 months
Time Frame: Baseline and 3 months
Important Other Climate Questionnaire adapted for physical activity and to query about one's team. Items rated on a Likert scale response format ranging from 1 (Strongly Disagree) to 7 (Strongly Agree) with a not applicable option, with higher total scores indicating higher perceived autonomy support.
Baseline and 3 months
Change in autonomy support at 12 months
Time Frame: 3 months and 12 months
Important Other Climate Questionnaire adapted for physical activity and to query about one's team. Items rated on a Likert scale response format ranging from 1 (Strongly Disagree) to 7 (Strongly Agree) with a not applicable option, with higher total scores indicating higher perceived autonomy support.
3 months and 12 months
Change in motivation at 3 months
Time Frame: Baseline and 3 months
Treatment Self-Regulation Questionnaire adapted for physical activity. Items scored using a 7-point Likert scale (1 = not at all to 7 = very true). Higher scores on the Autonomous Subscale indicate greater autonomous motivations for behavior change and higher scores on the Controlled Motivations subscale indicate higher controlled regulation.
Baseline and 3 months
Change in motivation at 12 months
Time Frame: 3 months and 12 months
Treatment Self-Regulation Questionnaire adapted for physical activity. Items scored using a 7-point Likert scale (1 = not at all to 7 = very true). Higher scores on the Autonomous Subscale indicate greater autonomous motivations for behavior change and higher scores on the Controlled Motivations subscale indicate higher controlled regulation.
3 months and 12 months
Change in social support for physical activity at 3 months
Time Frame: Baseline and 3 months
Social Support for Healthy Behaviors Questionnaire (physical activity support scale) adapted to query about one's team. Items scored using response options on a 5-point scale which ranges from almost never/not applicable to almost always, with higher mean scores indicating more support.
Baseline and 3 months
Change in social support for physical activity at 12 months
Time Frame: 3 months and 12 months
Social Support for Healthy Behaviors Questionnaire (physical activity support scale) adapted to query about one's team. Items scored using response options on a 5-point scale which ranges from almost never/not applicable to almost always, with higher mean scores indicating more support.
3 months and 12 months

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Mediation analysis of social support on moderate-to-vigorous intensity aerobic physical activity
Time Frame: 3 months and 12 months
A mediation analysis will be conducted to explore whether social support mediates increased (at 3 months) and sustained (at 12 months) moderate-to-vigorous intensity aerobic physical activity within the overall study sample. The Social Support for Healthy Behaviors Questionnaire (physical activity support scale) adapted to query about one's team will be used to measure social support at baseline, 3 months, and 12 months. Items are scored using response options on a 5-point scale which ranges from almost never/not applicable to almost always, with higher mean scores indicating more support. Minutes per week of moderate-to-vigorous intensity aerobic physical activity will be measured using an accelerometer at baseline, 3 months, and 12 months. These data will facilitate the construction of mediation models.
3 months and 12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of South Carolina

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Courtney Monroe, PhD, University of South Carolina

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 28, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 22, 2024

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 25, 2024

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 28, 2024

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 15, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 13, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
October 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • Pro00133610
  • R01DK138115 (U.S. NIH Grant/Contract)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Individual participant data that underlie the results reported in the article(s) reporting primary outcomes and secondary outcomes will be shared after deidentification. The study protocol, informed consent form, and statistical analysis plan will also be available to be shared.

IPD Sharing Time Frame

The data will be made available 12 months after the publication of the article(s) that reported the data.

IPD Sharing Access Criteria

Data will be made available via a study account posted on the Open Science Framework (https://www.osf.io)

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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Conditions

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Locations

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