Rethinking how and when to report descriptions of behavior change content within interventions: a case study of an ongoing physical activity trial (ready steady 3.0).

"Conflict of Interest : We have read and understood TBM’s policy on the declaration of interests and declare that all of the authors have no competing interests."

"Funding This case study was funded, in part, by the National Institutes of Nursing Research of the National Institutes of Health under Award Number 5R01NR016705-05"

"This case study is a descriptive analysis of the types and dosages of behavior change content intended to be delivered within Ready Steady 3. The protocol and rationale for Ready Steady 3.0 were published [] and registered at Clinicaltrials.gov (NCT03326141). Ready Steady 3.0 was designed to test the effects of two experimental intervention content components with distinct behavior change strategies: interpersonal (e.g., encourage social support) and intrapersonal (e.g., facilitate goal setting), using a 2x2 factorial design in community-residing adults aged 70 years and over []. The trial design also included two core components: an evidence-based physical activity protocol and a personal physical activity monitor. The four content components were combined differently in four study conditions (intervention packages): i) core components and attention control content about health and wellness; ii) core components and the interpersonal component; iii) core components and the intrapersonal component; iv) core components, the interpersonal and the intrapersonal components. Ethical approval of Ready Steady 3.0 was obtained from the University of Minnesota Institutional Review Board (1607S90922). Because there are no human subjects in this case study, it was exempt from IRB approval. Compliance with Ethical Standards: Conflict of Interest: We have read and understood TBM’s policy on the declaration of interests and declare that all of the authors have no competing interests.: Human Rights: This article does not contain any studies with human participants performed by any of the authors.: Informed Consent: Ethical approval of the parent Ready Steady 3.0 study was obtained from the University of Minnesota Institutional Review Board (1607S90922). Because there are no human subjects in this case study, it was exempt from IRB approval: Welfare of Animals: This article does not contain any studies with animals: Transparency Statements:Study registration: This study was not formally registered. Analytic plan registration: The analysis plan was not pre-registered officially. Availability of data: Data from this study will be available in the Data Repository for U of M. De-identified data from this study will be made available (as allowable according to institutional IRB standards) by emailing the corresponding author. Availability of analytic code: There is no analytical code associated with this study. "