RESUMO
The Canadian 24-Hour Movement Guidelines for Adults aged 18-64 years and Adults aged 65 years and older ("Guidelines") integrate recommendations for physical activity, sedentary, and sleep behaviours. Given the novelty of these integrated Guidelines, it was important to consider messaging strategies that would be most effective in reaching Canadian adults. The purpose of this study was to examine optimal messaging of the Guidelines as it pertains to communication channels and messages. Representative samples of Guideline end-users (N = 1017) and stakeholders (N = 877) each completed a cross-sectional survey. Descriptive statistics were calculated along with tests of statistical significance. Inductive content analysis was used to code stakeholders' comments (i.e., suggestions, concerns) on a draft version of the Guidelines. Most end-users had recently referred to online medical resources; family, friends, and co-workers; and physicians as communication channels for information regarding the movement behaviours. End-users and stakeholders felt that generic messages would foster self-efficacy to meet the Guidelines. Stakeholders highlighted a variety of considerations to ensure the Guidelines are inclusive towards diverse groups within the Canadian population. Findings will inform Guideline messaging. Novelty Most end-users referred to online medical resources; family, friends, and co-workers; and physicians as communication channels. End-users and stakeholders indicated that generic messages would foster self-efficacy to meet the Guidelines. Stakeholders expressed concerns about the inclusivity of the Guidelines for diverse socioeconomic groups.