Requirements for (web-based) physical activity interventions targeting adults above the age of 65 years – qualitative results regarding acceptance and needs of participants and non-participants

摘要

This paper is based on the results of the questionnaire-based survey assessing acceptance of the intervention among the two intervention group participants of PROMOTE, that was conducted at the 12-weeks follow-up, as well as the qualitative semi-structured interviews which were conducted as part of RTC (see Table  for further details regarding the content of the survey questionnaire and the interview guide). Due to the heterogeneity of the data material, qualitative content analysis was chosen to analyse the data [ ]. Following a deductive-inductive approach, a theoretical frame containing key topics and subtopics was developed. The classification of the relevant text and coding units to the overarching categories as well as the subcategories was performed by two independent researchers. The developed framework was systematically applied to the entire dataset and finalized following an iterative process (discussion  modification). In order to reduce the risk of bias, peer debriefing strategies were implemented. The results of individual analysis steps were elaborated and further developed by two scientists at regular intervals (four eyes principle). Important milestones of data analysis (overarching categories and socio-ecological model) were validated in two workshops attended by three qualitatively researching scientists. For instance, selected codes reflected upon and discussed together. All deviations in interpretation were discussed until a consensus was reached. Illustrative quotes were selected from the existing material as anchor examples. In addition, differences in statements between younger (40], level of education was categorized as low (ISCED score 1–2), medium (ISCED score 3–4), or high (ISCED score 5–8). Excerpts of the interviews and questionnaires relevant for this manuscript were translated from German into English (see Tables  and ). To minimize the risk of possible blurring and translation errors, all English quotes were checked against original transcripts by a team consisting of the interviewer and a native speaker.