Iran Medical Council Journal of Iranian Medical Council 2645-338X 4 1 2021 01 01 Physical Activity and Musculoskeletal Disorders among Iranian Older Adults 55 56 128266 http://dx.doi.org/10.18502/jimc.v4i1.5743 EN Masoud Gharib Department of Occupational Therapy, Orthopedic Research Center, Mazandaran University of Medical Sciences, Sari, Iran Vahid Rashedi School of Behavioral Sciences and Mental Health (Tehran Institute of Psychiatry), Iran University of Medical Sciences, Tehran, Iran 0000-0002-3972-3789 Journal Article 2020 10 15 The aging of the world’s population represents one of the key challenges over the next decades. Both life expectancy and the proportion of older adults are increasing; therefore, promoting and maintaining the quality of life at an older age is essential, especially in developing countries. It is estimated that one in five of the elderly population will be more than 80 years old in 2050 (1). In Iran, according to the medium-fertility variant in more recent analyses, the rate of people with the age over 60 and 65 is represented to be around 31% and 22%, respectively, in 2050 (2). https://www.jimc.ir/article_128266_088189d34ea804b314f11bc81334f32d.pdf