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The Effectiveness of a Computer-Tailored Web-Based Physical Activity Intervention Using Fitbit Activity Trackers in
Stephanie J Alley1, Jannique van Uffelen2, Stephanie Schoeppe1
1Physical Activity Research Group, Appleton Institute, Central Queensland University, Rockhampton, Australia.
Journal of Medical Internet Research
|May 13, 2022
Summary
Web-based physical activity interventions using computer-tailored advice and Fitbit trackers can improve moderate to vigorous physical activity (MVPA) in older adults. This study found that the tailoring+Fitbit group showed greater MVPA increases compared to the control group.
Area of Science:
- Gerontology
- Digital Health
- Exercise Science
Background:
- Healthy aging is significantly influenced by physical activity, yet a majority of adults aged 65 and older do not meet recommended activity levels.
- Web-based interventions incorporating computer-tailored advice and activity trackers like Fitbit show promise for engaging older adults in physical activity.
Purpose of the Study:
- To evaluate the effectiveness of the "Active for Life" program, a 12-week web-based intervention.
- The intervention utilized computer-tailored advice across six modules to enhance physical activity among older Australians.
Main Methods:
- Participants (n=243) were randomized into three groups: tailoring+Fitbit, tailoring only, or a wait-list control.
- Moderate to vigorous physical activity (MVPA) was measured using accelerometers, with secondary outcomes assessed via self-report surveys at multiple time points.
- Analyses employed generalized linear mixed models to compare changes in physical activity within and between groups.
Main Results:
- No significant overall interaction for MVPA was found, but the tailoring+Fitbit group showed a 59% greater increase in MVPA compared to the control group.
- While the tailoring+Fitbit group did not show significant within-group MVPA change, the control group experienced a significant decline.
- Self-reported physical activity significantly increased in the tailoring+Fitbit group compared to the control group at 6 weeks (+61%).
Conclusions:
- A computer-tailored physical activity intervention combined with Fitbit integration demonstrated improved MVPA outcomes in older adults compared to a control group.
- This approach offers a viable strategy for promoting physical activity and healthy aging in older populations.
