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).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
64
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.
University of Minnesota - Twin Cities
Minneapolis, Minnesota, United States
Change in objectively measured free-living physical activity
7-day measurement using wrist-worn ActiGraph tri-axial accelerometer
Time frame: 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.
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Change in sleep quality
7-day measurement using wrist-worn ActiGraph tri-axial accelerometer
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Change in cardiorespiratory Fitness
YMCA 3-minute step test
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Change in muscular fitness
60 second pushups and sit-ups muscular endurance tests (maximal repetitions)
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Change in intrinsic Motivation
Psychosocial survey
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Change in social support
Psychosocial survey
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Change in perceived physical activity barriers
Psychosocial survey
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Change in body weight (kg)
Measured using stadiometer to the nearest 0.1 kg
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
Height (cm
Measured using digital bodyweight scale to the nearest 0.1 cm
Time frame: Baseline
Change in body fat percentage
Measured using the digital weight scale used to assess body weight via bioelectrical impedance
Time frame: Baseline, 4 weeks (mid), and 8 weeks (end)
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