Peer Motivation Coaches, Social Media-based Support Group, and Behavior Change Strategies to Decrease Prolonged Sitting and Increase Moderate Exercise Snacks

Study Overview
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Brief Summary
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The MOV'D (Move Often eVery Day) intervention is a remotely-delivered, peer-supported intervention that delivers exercise snack (2-5 minutes of moderate to vigorous activity) and behavior change technique (BCT) videos to a private social media support group with the goal of interrupting prolonged sitting at work with MVPA minutes. The preliminary efficacy, feasibility, and acceptability trial will test the effects of MOV'D, a socially-supported, evidence-based behavior change technique educational and behavioral intervention to increase the number of active hours (an indirect measure of prolonged sitting bouts) (Hypothesis 1) and number of MVPA minutes (Hypothesis 2). This pilot will gather important estimates of the effect sizes, the variance, and covariance of the primary outcomes to calculate the sample size needed to power a larger fully powered RCT.

Detailed Description
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Prolonged sitting and inadequate moderate to vigorous intensity physical activity (MVPA) are pervasive risk factors for cardiovascular disease (CVD). Recent research has shown that some benefits of moderate to vigorous physical activity can be accrued in motivationally accessible short, 2-5 minute bouts throughout the day rather than needing to be a single, longer, continuous bout. The MOV'D intervention is a novel, remotely-delivered, social-media-based intervention to interrupt prolonged sitting with short bouts of MVPA, compared with a Fitbit-only control. The investigators will randomly assign participants to either MOV'D or a Fitbit only control for one month, with a one-month follow-up, to compare immediate and prolonged effects of treatment on number of workday hours with activity break and number of MVPA minutes.

Official Title
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Tweet4Wellness: A Social-media Based Support Group and Peer Motivation Coaches Approach to Decrease Prolonged Sitting and Increase Moderate Exercise Snacks

Conditions
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Sedentary Behavior, Physical Inactivity

Intervention / Treatment
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* Behavioral: MOV'D (Move Often eVery Day)
* Behavioral: Fitbit Self-Monitoring


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: have smartphone with internet capabilities spend more than 55% of time sedentary at work English literacy safe to exercise, assessed by the Physical Activity Readiness Questionnaire (PAR-Q) full-time employee at sedentary job Exclusion Criteria: -

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: This is preliminary efficacy, acceptability, and feasibility pilot with a randomized controlled design. The preliminary efficacy pilot will test the effects of MOV'D, a socially-supported, evidence-based behavior change technique educational and behavioral intervention to increase the number of active hours (an indirect measure of prolonged sitting bouts) (Hypothesis 1) and number of MVPA minutes (Hypothesis 2). The pilot will gather important estimates of the effect sizes, the variance, and covariance of the primary outcomes to calculate the sample size needed to power a larger trial.
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Fitbit-Only Self-Monitoring<br>Control participants will be sent a Fitbit and study-provided account and will self-monitor physical activity for the duration of the study period (2 months). | Behavioral: Fitbit Self-Monitoring<br>* All participants receive a Fitbit and are told to monitor their physical activity for the duration of the study period.<br>|
| Experimental: MOV'D plus Fitbit Self-Monitoring<br>Treatment participants will be sent a Fitbit and study-provided account, and assigned to a private, study-created Twitter support group of 10 participants. Within the private group of 10, each participant is also further paired with a peer to be that person's peer coach, setting weekly exercise snack goals and practicing behavior change techniques. | Behavioral: MOV'D (Move Often eVery Day)<br>* The MOV'D intervention is a remotely-delivered, peer-supported intervention that delivers exercise snack (2-5 minutes of moderate to vigorous activity) and behavior change technique (BCT) videos to a private social media support group with the goal of interrupting prolonged sitting at work with MVPA minutes.<br>Behavioral: Fitbit Self-Monitoring<br>* All participants receive a Fitbit and are told to monitor their physical activity for the duration of the study period.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in average active workday hours at post-intervention | Average hours with >2 min of MVPA (Moderate to Vigorous Physical Activity) or 250 steps between 8 AM - 7 PM per workday (of five); proxy for prolonged sitting time | 5 days at baseline, 5 days after 1 month treatment | 
| Change in average workday MVPA minutes at post-intervention | Average minutes of moderate to vigorous minutes, or minutes above 3 METs per workday (of five) at | 5 days at baseline, 5 days after 1 month treatment | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in average active workday hours at follow-up | Average hours with >2 min of MVPA or 250 steps between 8 AM - 7 PM per workday (of five); proxy for prolonged sitting time | 5 days at baseline, 5 days post 1-month follow-up | 
| Change in average workday MVPA minutes at follow-up | Average minutes of moderate to vigorous minutes, or minutes above 3 METs +per workday (of five) | 5 days at baseline, 5 days post 1-month follow-up |