In the academic expansion of American sports from “on campus” to “off campus”, researchers have started
the research process of adolescents’ off campus physical activities, and gradually focused on the most widely used
fields of family, community and online research. Family sports researchers believe that family is the first medium
to promote adolescents’ physical activities. Parents’ individual characteristics, attitudes, behaviors and other factors
determine the trend of adolescents’ physical activities. Community sports researchers advocate that the community is
an extension of the family stadium. Play streets, community sports standardized management and CBPR all affect the
quality of adolescents’ physical activities. Online sports researchers found that adolescents’ online sports participation
rate continued to rise, and innovative virtual communities, game virtual communities and practical virtual
communities broke the restrictions on adolescents’ physical activities. Chinese academic circles should go beyond
the distinction of family, community and online sports, rationally design the empirical research path of the integrated
development of family, community, online and School of adolescents’ physical activities, guide sports practice, and
strive to produce more localized empirical research results as soon as possible.