One Step at a Time: An Intervention to Reduce Sedentary Behavior Among Working Adults

Study Overview
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Brief Summary
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The proposed study will test the preliminary efficacy of a novel 12-week social cognitive theory-based intervention that will target reducing daily sitting time and increasing exercise participation among middle-aged working adults. This is a population highly susceptible to excessive sedentary time and low levels of exercise engagement. This two-arm randomized controlled trial (RCT) will examine the preliminary efficacy of decreasing sedentary time in addition to increasing moderate-vigorous intensity physical activity (MVPA) engagement, compared to a group which only receives MVPA promotion.

Official Title
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One Step at a Time: Testing the Efficacy of a Novel Social Cognitive Theory-Based Intervention to Reduce Sedentary Behavior Among Working Adults

Conditions
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Sedentary Behavior, Exercise, Middle Age, Adult

Intervention / Treatment
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* Behavioral: Decrease Sedentary Time + Increase MVPA group
* Behavioral: Increase MVPA group


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 45-65 years of age by study start date Hold full-time employment (≥ 30 hours/week) at one or more jobs Hold a sedentary-based job (which also allows for ability to freely move about during the workday) Low active (engage in ≤2 days of 30+ minutes of structured moderate-vigorous intensity exercise/week) Physician's consent to participate in aerobic testing and/or the exercise program (if needed based on Physical Activity Readiness Questionnaire responses) Ambulatory Absence of health conditions that may be made worse by exercise Ability to complete all testing assessments in-person Access to a laptop/desktop/phone with Zoom web-conferencing software Fluent in English Exclusion Criteria: Under 45 or over 65 years of age Not holding full-time employment (work < 30 hours/week at one or more jobs) Hold a job(s) which is classified as light, medium, heavy, or very heavy work Hold a sedentary-based job which does not allow for free movement throughout the workday (i.e., bus driver) High active (engage in > 2 days or 30+ minutes of structured moderate-vigorous intensity exercise/week) Non-consent of physician Non-ambulatory (i.e., use of walkers, wheelchair, cane, etc.) Presence of health conditions that may be made worse by exercise. Unable to complete assessments in-person No access to laptop/desktop/phone with Zoom software

Ages Eligible for Study
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Minimum Age: 45 Years
Maximum Age: 65 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: Health Services Research
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Decrease Sedentary Time + Increase MVPA<br>Participants in this group will receive a 12-week, social cognitive theory-based intervention targetting reduction of daily sedentary time. This information will be delivered to them in the form of Zoom workshops, a program workbook, personalized step count goals, and a private social media page. The aim of this component will be to have participants displace their daily sedentary time with light-intensity physical activity, such as casual walking. The second component of this intervention will be increasing participants' weekly MVPA engagement. Participants will participate in 1 live, virtual aerobics-based exercise class per week and complete 2 additional sessions on their own time. Participants will build up to exercising 150 minutes/week (the federal physical activity recommendations). | Behavioral: Decrease Sedentary Time + Increase MVPA group<br>* 12 week home-based exercise program to promote engagement of 150 min/week of moderate-vigorous intensity exercise; personalized step count goals to increase daily volume of physical activity and displacement of sedentary time<br>|
| Active Comparator: Increase MVPA only<br>Participants in this group will only receive the MVPA-promoting component (which will be the same delivery as the intervention group). Participants in this arm will participate in 1 live, virtual aerobics-based exercise class per week (held separately from the intervention group) and will complete 2 additional exercise classes on their own time. Participants will build up to exercising 150 minutes/week (the federal physical activity recommendations). | Behavioral: Increase MVPA group<br>* 12 week home-based exercise program to promote engagement of 150 min/week of moderate-vigorous intensity exercise<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Changes in average daily step counts | Participants will wear a hip-based pedometer for 7 days at baseline and 12 weeks | Baseline,12 weeks | 
| Changes in average daily sedentary time | Participants will wear a hip-based accelerometer for 7 days at baseline and 12 weeks to measure their daily time spent sedentary. | Baseline,12 weeks | 
| Changes in average daily light-intensity physical activity | Participants will wear a hip-based accelerometer for 7 days at baseline and 12 weeks to measure their daily time spent engaged in light-intensity physical activity. | Baseline,12 weeks | 
| Changes in average daily moderate-vigorous intensity physical activity | Participants will wear a hip-based accelerometer for 7 days at baseline and 12 weeks to measure their daily time spent engaged in moderate-vigorous intensity physical activity. | Baseline, 12 weeks |