Study on the Design of Public Fitness Facilities Based on KANO-AHP-QFD: Promoting Intergenerational Well-Being and Sustainable Development

In the context of intergenerational integration, this study focuses on the elderly aged 60 to 74 and children aged 4 to 6, aiming to optimize the safety, usability and interactivity of public fitness facilities, enhance their sustainability and boost intergenerational well-being. Initially, the study collected 20 user demands via on-site investigations and user interviews. The KANO model was then used to classify these demand attributes, eliminating 7 indifferent demands and retaining 13 key ones. Subsequently, the Analytic Hierarchy Process was applied to calculate the weights of the key demands, with all consistency ratios (CR) remaining below 0.1, validating the rationality of the evaluation results. Finally, Quality Function Deployment was employed to transform the key demands into 10 design elements and conduct calculations and rankings. Based on this analysis, a design scheme was proposed that meets the fitness needs of both the elderly and children, promotes intergenerational interaction and health, and enhances the sustainability of public fitness facilities. Its feasibility has been preliminarily verified through a small-sample satisfaction survey. The KANO-AHP-QFD integrated method adopted in this study realizes the integration of qualitative and quantitative analysis, enhances the objectivity of public fitness facility design, and provides a scientific reference for the sustainable design of intergenerational public facilities.