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The effectiveness of a computer-tailored web-based physical activity intervention using fitbit activity trackers in older adults (Active for Life)_Randomized controlled trial.pdf (715.14 kB)

The effectiveness of a computer-tailored web-based physical activity intervention using fitbit activity trackers in older adults (Active for Life): Randomized controlled trial

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posted on 2022-11-07, 23:22 authored by Stephanie AlleyStephanie Alley, Jannique van Uffelen, Stephanie SchoeppeStephanie Schoeppe, Lynne Parkinson, Susan HuntSusan Hunt, Deborah Power, Natasha Waterman, Courtney WatermanCourtney Waterman, Gia ToGia To, Mitch J Duncan, Anthony SchneidersAnthony Schneiders, Corneel VandelanotteCorneel Vandelanotte
Background: Physical activity is an integral part of healthy aging; yet, most adults aged ≥65 years are not sufficiently active. Preliminary evidence suggests that web-based interventions with computer-tailored advice and Fitbit activity trackers may be well suited for older adults. Objective: The aim of this study was to examine the effectiveness of Active for Life, a 12-week web-based physical activity intervention with 6 web-based modules of computer-tailored advice to increase physical activity in older Australians. Methods: Participants were recruited both through the web and offline and were randomly assigned to 1 of 3 trial arms: tailoring+Fitbit, tailoring only, or a wait-list control. The computer-tailored advice was based on either participants' Fitbit data (tailoring+Fitbit participants) or self-reported physical activity (tailoring-only participants). The main outcome was change in wrist-worn accelerometer (ActiGraph GT9X)-measured moderate to vigorous physical activity (MVPA) from baseline to after the intervention (week 12). The secondary outcomes were change in self-reported physical activity measured by means of the Active Australia Survey at the midintervention point (6 weeks), after the intervention (week 12), and at follow-up (week 24). Participants had a face-to-face meeting at baseline for a demonstration of the intervention and at baseline and week 12 to return the accelerometers. Generalized linear mixed model analyses were conducted with a γ distribution and log link to compare MVPA and self-reported physical activity changes over time within each trial arm and between each of the trial arms. Results: A total of 243 participants were randomly assigned to tailoring+Fitbit (n=78, 32.1%), tailoring only (n=96, 39.5%), and wait-list control (n=69, 28.4%). Attrition was 28.8% (70/243) at 6 weeks, 31.7% (77/243) at 12 weeks, and 35.4% (86/243) at 24 weeks. No significant overall time by group interaction was observed for MVPA (P=.05). There were no significant within-group changes for MVPA over time in the tailoring+Fitbit group (+3%, 95% CI -24% to 40%) or the tailoring-only group (-4%, 95% CI -24% to 30%); however, a significant decline was seen in the control group (-35%, 95% CI -52% to -11%). The tailoring+Fitbit group participants increased their MVPA 59% (95% CI 6%-138%) more than those in the control group. A significant time by group interaction was observed for self-reported physical activity (P=.02). All groups increased their self-reported physical activity from baseline to week 6, week 12, and week 24, and this increase was greater in the tailoring+Fitbit group than in the control group at 6 weeks (+61%, 95% CI 11%-133%). Conclusions: A computer-tailored physical activity intervention with Fitbit integration resulted in improved MVPA outcomes in comparison with a control group in older adults.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

24

Issue

5

Start Page

1

End Page

17

Number of Pages

17

eISSN

1438-8871

ISSN

1439-4456

Publisher

Journal of Medical Internet Research

Publisher License

CC BY

Additional Rights

CC BY 4.0

Language

en

Peer Reviewed

  • Yes

Open Access

  • Yes

Acceptance Date

2022-02-08

External Author Affiliations

KU Leuven, Belgium; The University of Newcastle

Author Research Institute

  • Appleton Institute

Era Eligible

  • Yes

Medium

Electronic

Journal

Journal of Medical Internet Research

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