title: Coeducational and single-sex physical education in middle schools: impact on physical activity.
authors.affiliation: Department of Exercise and Nutritional Sciences, San Diego State University, CA 92182-7251, USA. tmckenzie@sdsu.edu
authors.forename: Thomas L
authors.initials: TL
authors.lastname: McKenzie
authors.forename: Judith J
authors.initials: JJ
authors.lastname: Prochaska
authors.forename: James F
authors.initials: JF
authors.lastname: Sallis
authors.forename: Kathryn J
authors.initials: KJ
authors.lastname: LaMaster
mesh_terms: D000293:Adolescent; D003469:Culture; D005260:Female; D006801:Humans; D008297:Male; D009048:Motor Skills; D010806:Physical Education and Training; D010809:Physical Fitness; D011287:Prejudice