The overall aim of this study is to test the acceptability and usability of a mobile application (app) for family-based physical activity and weight gain prevention among parent/guardian and child (ages 9-12 years) dyads.
This study includes a 12-week active intervention period. Interested participants will complete a study orientation webinar, then continue to a baseline visit and online questionnaires if interested. They will then complete 7-days of accelerometry monitoring to measure current physical activity levels. If eligible, they will attend a brief kick-off meeting to receive their Fitbits and study apps. The intervention period is 12 weeks, all remotely delivered. The intervention focuses on families working to increase their moderate- to-vigorous intensity physical activity. At 12 weeks, families will attend a brief in-person assessment visit and complete online questionnaires and 7 days of accelerometry, and complete a semi-structured interview via Zoom to discuss their experiences and provide feedback for future program modifications.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
PREVENTION
Masking
NONE
Enrollment
30
Dyads in the Family Fit condition will use the Family Fit app and a Fitbit for 12 weeks, working to increase their moderate- to vigorous-intensity physical activity.
UF College of Health and Human Performance
Gainesville, Florida, United States
Recruitment
Number of dyads screened and enrolled; rate of recruitment
Time frame: Baseline
Use rates
Use rates of the Family Fit app summarized from back-end data from the app
Time frame: 12 weeks
Acceptability
Satisfaction, perceived appropriateness, intent to continue to use intervention materials, likelihood of recommending the program to a friend, open-ended questions: overall satisfaction with program and suggestions for improvement
Time frame: 12 weeks
Retention
Number of dyads per condition who complete follow-up assessments
Time frame: 12 weeks
Sustainability
Use of Family Fit app, Fitbit app, and Fitbit devices from weeks 13-18
Time frame: 12 weeks
Usability
Scores from System Usability Scale
Time frame: 12 weeks
Contamination
Use of outside physical activity programs, devices, and apps during the study
Time frame: 12 weeks
Average minutes/day of moderate- to vigorous-intensity physical activity, accelerometry
Actigraph accelerometers to be used; 7 days of wear time will be requested from participants at each time point
Time frame: Baseline, 12 weeks
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Average minutes/day of moderate- to vigorous-intensity physical activity, self-report
Godin Leisure-Time Exercise Questionnaire
Time frame: Baseline, 12 weeks
BMI (parents)
Body weight (to the nearest 0.1 lbs), height (to the nearest 0.25 inch) with standard protocols; BMI calculated as kg/m\^2
Time frame: Baseline, 12 weeks
BMI percentile (child)
Body weight (to the nearest 0.1 lbs), height (to the nearest 0.25 inch) with standard protocols; BMI percentile using standardized charts
Time frame: Baseline, 12 weeks
Family cohesion
Moos et al. family environment scale
Time frame: Baseline, 12 weeks
Social support
Kiernan et al. adaptation of social support scale
Time frame: Baseline, 12 weeks
Family communication
Measure from the National Longitudinal Study of Adolescent Health (Add Health)
Time frame: Baseline, 12 weeks
Family engagement
Measure from the National Longitudinal Study of Adolescent Health (Add Health)
Time frame: Baseline, 12 weeks
Family closeness
Measure from the National Longitudinal Study of Adolescent Health (Add Health)
Time frame: Baseline, 12 weeks