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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

The Effectiveness of a Computer-Tailored Web-Based Physical Activity Intervention Using Fitbit Activity Trackers in Older Adults (Active for Life): Randomized Controlled Trial

The effective tailored intervention of Van Dyck et al [20] was 5 weeks in duration, whereas the ineffective intervention of Volders et al [19] and our intervention were 4 months and 3 months, respectively, in duration. The longer time frame for the postintervention assessment of these studies may have made it harder to detect group by time effects because improvements in physical activity tend to decline over time [16].

Stephanie J Alley, Jannique van Uffelen, Stephanie Schoeppe, Lynne Parkinson, Susan Hunt, Deborah Power, Natasha Waterman, Courtney Waterman, Quyen G To, Mitch J Duncan, Anthony Schneiders, Corneel Vandelanotte

J Med Internet Res 2022;24(5):e31352