Refining and Implementing a Vigorous Intermittent Lifestyle Physical Activity Intervention: Views of Key Stakeholders.

Background: Novel options are needed to promote physical activity in the aging population. This study aimed to adapt intervention contents, determine implementation strategies and the mode of delivery for support materials of a targeted vigorous intermittent lifestyle physical activity (VILPA) intervention by consulting with key stakeholders (health professionals and adults transitioning to retirement).

Methods: A two-phase approach was undertaken. In Phase 1, semistructured interviews were conducted with 10 health professionals. The intervention was amended, and implementation strategies were drafted according to findings from the health professional interviews. In Phase 2, the amended VILPA intervention was presented and discussed in two focus groups with 15 adults transitioning to retirement. The participants were consulted regarding the feasibility, acceptability, and appropriateness of the amended intervention and the implementation strategies and mode of delivery for the support materials. Qualitative content analysis was performed across both phases.

Findings: Key implementation strategies adults transitioning to retirement recommended were education, social support, self-monitoring, rewards, and regular prompts. Participants preferred paper-based delivery of the intervention materials, as they thought the visual of a hard-copy material would act as a reminder to follow the intervention. Stakeholders believed the VILPA intervention could be delivered with a printed booklet that contained weekly checklists allowing participants to self-monitor and track their progress. Significance/Implications: This is the first attempt to translate evidence-based research on VILPA to an intervention in real-world settings. The novel intervention could provide new opportunities for older adults to engage in physical activity anywhere and anytime.