title: The System for Observing Fitness Instruction Time (SOFIT) as a measure of energy expenditure during classroom-based physical activity.
abstract: The aim of this investigation was to develop an equation to estimate physical activity energy expenditure (PAEE) during a 10-min physically active academic lesson using The System for Observing Fitness Instruction Time (SOFIT) and demographic information. PAEE (portable indirect calorimeter) and physical activity (SOFIT) were simultaneously assessed in 38, 2nd through 5th grade children. PAEE and SOFIT were 3.04 +/- 1.1 (kcal/min) and 3.8 +/- 0.4 (score), respectively. PAEE was predicted from SOFIT score and body weight [PAEE (kcal/min) = (1.384*SOFIT + 0.084*weight (kg)--5.126), R = .81, SEE = 1.23 kcal/min]. PAEE measured by indirect calorimeter and predicted from SOFIT and body weight were 3.04 +/- 1.1 (kcal/min) and 3.04 +/- 0.9 kcal/min) respectively. SOFIT and body weight may provide a useful measure of PAEE associated with classroom based physical activity.
authors.affiliation: Center for Physical Activity and Weight Management, University of Kansas, KS 66045, USA.
authors.forename: Jeffery J
authors.initials: JJ
authors.lastname: Honas
authors.forename: Richard A
authors.initials: RA
authors.lastname: Washburn
authors.forename: Bryan K
authors.initials: BK
authors.lastname: Smith
authors.forename: Jerry L
authors.initials: JL
authors.lastname: Greene
authors.forename: Galen
authors.initials: G
authors.lastname: Cook-Wiens
authors.forename: Joseph E
authors.initials: JE
authors.lastname: Donnelly
mesh_terms: D002153:Calorimetry, Indirect; D002648:Child; D004734:Energy Metabolism; D015444:Exercise; D005260:Female; D006801:Humans; D007615:Kansas; D016014:Linear Models; D008297:Male; D009765:Obesity / Q000517:prevention & control; D019370:Observation; D015203:Reproducibility of Results; D013663:Teaching / Q000379:methods*; D013997:Time Factors