%0 Conference Proceedings %T Impacts of physical activity and exercise on physical and mental health in older adults during covid-19 pandemic: a review of literatur %A Mohammadi Khas, Seyedeh Saba %A Ebrahimi Atri, Ahmad %A Shahtahmassebi, Behnaz %J اولین کنگره بین المللی علوم ورزشی و پژوهش های بینا رشته ای/نیمه مجازی-دانشگاه تهران %D 2021