Design of contents for developing an intervention app for sarcopenia in older adults: A research study using the Delphi technique

Purpose: This study was conducted to design content for a sarcopenia intervention app. Methods: The Delphi method was used with an expert group to validate the contents. The instrument was developed based on a literature review. We categorized sarcopenia intervention content into three main categories and fourteen subcategories. Thirteen experts participated in two consecutive rounds of surveys, which included 5-point Likert scale questions and open-ended questions. Based on experts’ opinions, the Content Validity Index (CVI) for content validity and the Coefficient of Variation (CV) for stability were calculated. Results: In the first Delphi survey, items with a CVI value of less than 0.75 were deleted. The details were revised based on the experts. opinions. The second Delphi survey showed a CVI value ranging from 0.90 to 1.00 and a CV value ranging from 0.06 to 0.14 for all items. The study identified three criteria for diagnosing possible sarcopenia, eleven factors for exercise intervention, and three aspects for nutritional intervention. Conclusion: This Delphi research study confirmed the essential contents required for developing an intervention app for sarcopenia in older adults. Based on this study’s results, a sarcopenia intervention app can be developed and used as a tool for intervening with sarcopenia patients.