title: Consistency of Moderate to Vigorous Physical Activity in Middle School Physical Education.
abstract: This study assessed the consistency of moderate to vigorous physical activity (MVPA) in a sample of middle school physical education lessons. Random intercept hierarchical linear regressions were employed to model the relationship between consistency of MVPA and independent variables, including lesson and teacher characteristics. Larger classes spent significantly more time in consistent MVPA in the absence of controlling for teacher characteristics. A significant interaction between class size and teacher experience suggests that experience may play a beneficial role in larger classes, and overall class size does not have to be a barrier to achieving high levels of MVPA.
authors.affiliation: Departments of Community Health Sciences (Mss Gill and Rice and Dr Prelip), Biostatistics (Mr Chan-Golston), and Environmental Health Sciences (Dr Cole), UCLA Fielding School of Public Health, Los Angeles, California; and UCLA School of Nursing, Los Angeles, California (Dr Koniak-Griffin).
authors.forename: Monique
authors.initials: M
authors.lastname: Gill
authors.forename: Alec M
authors.initials: AM
authors.lastname: Chan-Golston
authors.forename: Lindsay N
authors.initials: LN
authors.lastname: Rice
authors.forename: Brian L
authors.initials: BL
authors.lastname: Cole
authors.forename: Deborah
authors.initials: D
authors.lastname: Koniak-Griffin
authors.forename: Michael L
authors.initials: ML
authors.lastname: Prelip
mesh_terms: D000293:Adolescent; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D063766:Pediatric Obesity / Q000517:prevention & control*; D010806:Physical Education and Training / Q000379:methods*; D012574:Schools