Objective. We sought to determine the validity and reliability of a self-report physical activity questionnaire (PAQ) measuring physical activity/inactivity in South African
schoolgirls of different ethnic origins.
Methods. Construct validity of the PAQ was tested against physical activity energy expenditure estimated from an ACTIVITYGRAM and inactivity from reported television
programme viewing in 332 girls (ages 9 - 12 yrs, grades 4 - 5). Body composition (WHO BMI percentiles and percentage body fat) was used as an indirect measure
of validity for the PAQ. Test-retest reliability of the PAQ was assessed in a convenience sample of 14 girls.
Results. Weak but significant associations were found between the body composition and PAQ-derived total energy expenditure (r=-0.18;
