64 страниц. 2013 год. LAP Lambert Academic Publishing Major Depressive disorder is a mental illness that affects approximately 121 million people in the world. Currently, Physical activity measures are used to reduce symptoms of depression. In this cross-sectional study, secondary data from NHANES 2007-2008 is analyzed to determine the association between physical activity and depression. The results show that there is no significant association between physical activity levels and depression.