Recruitment, screening, and baseline participant characteristics in the WALK 2.0 study : a randomized controlled trial using web 2.0 applications to promote physical activity

Cristina M. Caperchione, Mitch J. Duncan, Richard R. Rosenkranz, Corneel Vandelanotte, Anetta K. Van Itallie, Trevor N. Savage, Cindy Hooker, Anthony J. Maeder, W. Kerry Mummery, Gregory S. Kolt

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Objective To describe in detail the recruitment methods and enrollment rates, the screening methods, and the baseline characteristics of a sample of adults participating in the Walk 2.0 Study, an 18 month, 3-arm randomized controlled trial of a Web 2.0 based physical activity intervention. Methods A two-fold recruitment plan was developed and implemented, including a direct mail-out to an extract from the Australian Electoral Commission electoral roll, and other supplementary methods including email and telephone. Physical activity screening involved two steps: a validated single-item self-report instrument and the follow-up Active Australia Questionnaire. Readiness for physical activity participation was also based on a two-step process of administering the Physical Activity Readiness Questionnaire and, where needed, further clearance from a medical practitioner. Results Across all recruitment methods, a total of 1244 participants expressed interest in participating, of which 656 were deemed eligible. Of these, 504 were later enrolled in the Walk 2.0 trial (77% enrollment rate) and randomized to the Walk 1.0 group (n = 165), the Walk 2.0 group (n = 168), or the Logbook group (n = 171). Mean age of the total sample was 50.8 years, with 65.2% female and 79.1% born in Australia. Conclusion The results of this recruitment process demonstrate the successful use of multiple strategies to obtain a diverse sample of adults eligible to take part in a web-based physical activity promotion intervention. The use of dual screening processes ensured safe participation in the intervention. This approach to recruitment and physical activity screening can be used as a model for further trials in this area.
Original languageEnglish
Pages (from-to)25-33
Number of pages9
JournalContemporary Clinical Trials Communications
Volume2
DOIs
Publication statusPublished - 2016

Open Access - Access Right Statement

© 2016 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Keywords

  • exercise
  • medical screening
  • randomized controlled trials
  • recruitment
  • web 2.0

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