title: Sports involvement across the life span: expansion and contraction of sports activities.
authors.affiliation: Cecil B. Day School of Hospitality Administration, Georgia State University, Atlanta 30303.
authors.forename: B J
authors.initials: BJ
authors.lastname: Mihalik
authors.forename: J T
authors.initials: JT
authors.lastname: O'Leary
authors.forename: F A
authors.initials: FA
authors.lastname: McGuire
authors.forename: F D
authors.initials: FD
authors.lastname: Dottavio
mesh_terms: D000367:Age Factors; D006306:Health Surveys; D006801:Humans; D008016:Life Change Events; D012951:Socialization; D013177:Sports / Q000523:psychology; D014481:United States