Nasrin Faramarzi - Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Saba Belyani - Department of Nutrition, North Khorasan University of Medical Sciences, Bojnourd, Iran.
Majid Khadem-rezaiyan - Department of Community Medicine, Clinical Research Development Unit, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
Reza Rezvani - Department of Medical Informatics, Pharmacy School, Mashhad University of Medical Sciences, Mashhad, Iran.
Maryam Alinezhad-Namaghi - International UNESCO Center for Health-Related Basic Sciences and Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran.

Introduction: The emergence of the COVID-۱۹ pandemic in December ۲۰۱۹ had a profound impact on global public health. This study investigates the effects of the coronavirus on dietary intake and physical activity among the Mashhad PERSIAN cohort population in Mashhad, Iran. Method: This nested cohort study was done among the PERSIAN Cohort Study in Mashhad University of Medical Sciences population who confirmed COVID-۱۹ infection through PCR testing. Participants were assessed for physical activity using the International Physical Activity Questionnaire (IPAQ) short form, as well as changes in appetite and food intake during the COVID-۱۹ infection. All measurements were compared during the disease period to pre-infection. Results: This study comprised ۳۸۱ confirmed COVID-۱۹ patients (average age of ۴۲.۵۱ ± ۷.۳۱ years) of which ۱۵۴ (۴۰.۴%) were male. There was a significant reduction in the levels of vigorous and moderate physical activity, walking, and total sitting time (P<۰.۰۰۱ for all). Also, food intake was reduced during the COVID-۱۹ infection compared to before the infection. Conclusion: In summary, this study demonstrates a significant decrease in physical activity and food intake during COVID-۱۹ infection.

COVID-۱۹, Physical Activity, Dietary intake, PERSIAN Cohort