Abstract
With an increase in the older adult population, many countries have designed programs to promote active aging. Thus, knowledge of the factors and features of these programs is necessary to design a comprehensive active aging program. This study aimed to review the active aging programs focusing on the extraction of essential factors, key features, and outcomes of these programs. This narrative review was carried out to examine the conducted active aging programs. Through systematic searches of databases within the time limit of 2002-2021, articles were identified and assessed against inclusion and exclusion criteria. Using the findings, three sections were developed: (1) essential factors in designing programs that consist of older adults' participation, health maintenance and, promotion, leisure time, and technology use; (2) key features of the program, include affordability, voluntary participation, intergenerational consideration, social networks and government support, lifelong learning and teaching, cross-sectoral and inter-professional collaboration, and an enabling-supportive environment; (3) the program outcomes, include increasing awareness and knowledge, activities and participation, quality of life, life satisfaction in various psychological dimensions of well-being, and physical, mental, cognitive, and behavioral health in older adults. Some gaps were identified. Consequently, future planners are recommended to address older adults' sexual health, community culture, and gender in addition to other key features and essential factors in designing active aging programs to promote older adults' health.