title: Using momentary time sampling to estimate minutes of physical activity in physical education: validation of scores for the system for observing fitness instruction time.
authors.affiliation: Health, Physical Education, and Recreation Department, Utah State University, Logan 84322-7000, USA. edward.heath@usu.edu
authors.forename: Edward M
authors.initials: EM
authors.lastname: Heath
authors.forename: Karen J
authors.initials: KJ
authors.lastname: Coleman
authors.forename: Tera L
authors.initials: TL
authors.lastname: Lensegrav
authors.forename: Jennifer A
authors.initials: JA
authors.lastname: Fallon
mesh_terms: D002648:Child; D001330:Electronic Data Processing; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D010806:Physical Education and Training; D011795:Surveys and Questionnaires; D013781:Texas; D013997:Time Factors