YouTube-Delivered Physical Activity Intervention

Study Overview
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Brief Summary
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This study will be an 8-week randomized controlled trial examining the effects of a YouTube-delivered aerobic and muscle strengthening physical activity intervention on university students' physical activity, fitness, sleep quality, and psychosocial health outcomes. Participants will be randomized into 1 of 2 groups: (1) intervention group (receive twice-weekly YouTube videos [1 aerobic workout video; 1 muscle-strengthening workout video] for 8 weeks); or (2) control group (receive twice-weekly YouTube videos with general health information [no physical activity-related information or workouts] for 8 weeks). Baseline (0 weeks), mid-point (4 weeks), and post-test (8 weeks) testing will take place and the following outcome measures will be assessed at these time points: participants' free-living (7-day) objectively-measured physical activity and sleep quality data will be collected; anthropometric measures (height, weight, percent body fat); cardiorespiratory and muscular fitness; and psychosocial assessments (perceived physical activity barriers and social support).

Official Title
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Effect of a YouTube-Delivered Physical Activity Intervention on College Students' Aerobic and Muscle-Strengthening Physical Activity: A Randomized Controlled Trial

Conditions
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Healthy

Intervention / Treatment
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* Behavioral: YouTube-delivered aerobic and muscle-strengthening physical activity intervention


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 18-35 years of age; able to participate in aerobic and muscle-strengthening exercise; healthy (i.e., no diseases or clinical/mental health conditions which will prevent physical activity participation); does not meet minimum physical activity guidelines criteria for aerobic (≥ 150 minutes per week of moderate-to-vigorous intensity physical activity) and muscle-strengthening (≥ 2 days per week; 8-10 exercises for all major muscle groups) physical activity at time of enrollment; willing to be randomized to the intervention or control group. Exclusion Criteria: less than 18 years old or greater than 35 years old; physical or mental health contradictions which do not allow participants to participate in physical activity; exceed minimum aerobic or muscle-strengthening physical activity guideline recommendations; unwilling to be randomized to either intervention or control group.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 35 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: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Physical activity intervention<br>Will receive twice-weekly, YouTube-delivered aerobic and muscle-strengthening physical activity videos for 8 weeks. | Behavioral: YouTube-delivered aerobic and muscle-strengthening physical activity intervention<br>* Participants in the intervention group will receive two YouTube-delivered videos each week, for 8 weeks. In detail, on Monday, participants will receive an aerobic-based physical activity video with information and a workout to complete and on Thursdays, the participants will receive a video with muscle-strengthening physical activity information and a workout to complete.<br>|
| No Intervention: General health education control<br>Will receive twice-weekly, YouTube-delivered videos with general health education information for 8 weeks. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in objectively measured free-living physical activity | 7-day measurement using wrist-worn ActiGraph tri-axial accelerometer | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Change in adherence to muscle-strengthening guidelines | Assessed by 7-day physical activity recall interview to see if participants engaged in muscle-strengthening activity at least 2 days per week. | Baseline, 4 weeks (mid), and 8 weeks (end) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in sleep quality | 7-day measurement using wrist-worn ActiGraph tri-axial accelerometer | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Change in cardiorespiratory Fitness | YMCA 3-minute step test | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Change in muscular fitness | 60 second pushups and sit-ups muscular endurance tests (maximal repetitions) | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Change in intrinsic Motivation | Psychosocial survey | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Change in social support | Psychosocial survey | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Change in perceived physical activity barriers | Psychosocial survey | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Change in body weight (kg) | Measured using stadiometer to the nearest 0.1 kg | Baseline, 4 weeks (mid), and 8 weeks (end) | 
| Height (cm | Measured using digital bodyweight scale to the nearest 0.1 cm | Baseline | 
| Change in body fat percentage | Measured using the digital weight scale used to assess body weight via bioelectrical impedance | Baseline, 4 weeks (mid), and 8 weeks (end) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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youtube, physical activity, fitness