Preliminary study on physical training methods for middle-aged and elderly people after COVID-19 epidemic.

Improve immunity. Preliminary study on physical training methods for middle-aged and elderly people after COVID-19 epidemic: The purpose and significance of this study is to help middle-aged and elderly people improve their immunity, cardiopulmonary function, metabolism and strength. Novel coronavirus, a coronavirus belonging to β genus, has never been found in humans before, and it is also called 20 19 novel coronavirus (20 19-nCoV), which can cause novel coronavirus after infection.