Interventions combining protein-rich diets with resistance exercises seem a promising avenue in helping to prevent sarcopenia. However, compliance to health interventions is generally low. The aim of the present study was to provide qualitative insights into the drivers and barriers that older adults experience when trying to comply with a combined dietary and physical exercise intervention. Semi-structured interviews with 18 older adults participating in such an intervention were conducted and analyzed using thematic content analysis. Most frequently reported drivers to comply with the diet were a fit with existing habits, knowledge on the health benefits, and product properties (taste, convenience, package). Drivers for physical exercises were existing habits, social contacts, customized support, and experienced physical improvement. It is suggested that customized support is important to successfully implement exercise-protein interventions amongst older adults, especially regarding participants' habits, product preferences, and social environment.
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