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Aging is a complex process of physiological and social change that results in diseases, disabilities, reduced levels of happiness (1), gradual decline in performance, and individual changes (2). One of the key strategies in the healthy ageing process is a physical activity (PA) (1), which results in the lack of dependence, physical ability, and the improvement of the quality of life and the reduction of the risk of disease (2, 3). Regular PA has unexpected changes in physiological factors and increases life expectancy by limiting the growth and progression of chronic diseases, disability in the elderly (4). Despite such health benefits (1, 5-7), insufficient PA is very common in older adults ranging from 50 % to 88 % (5, 8-11). Studies showed that different factors are associated with participating in PA in older adults including social, cultural and climatic conditions (2), and individual and social factors such as age, gender, marital status, education level, income and health status (10). Iran’s population is ageing, according to 2011 census, 8.2 % of the total population was made up by the elderly (12), which increased to 10 % by 2025 and 21-25 % by 2050 because of the advancements in health care and social factors toward medical and therapeutic care (1). Iranian studies have also shown a high degree of insufficient PA varied between 30 % and up to 85 % (8, 13-15). Findings from studies, the means Physical Activity Scale for the Elderly (PASE) score in the older people were 124.79 in Tehran (15), 222 in Illam (16), and the elderly living in the Canadian Senior Health Center 112.6 (10, 17). Level of PA based on PASE score in the northwest of Iran, with special culture, no study has done on PA level of the elderly. Therefore assessment of PA in this age group can helpful to design healthy programs.

Predictors of Physical Activity in Older Adults in Northwest of Iran