Comparison of the amounts of physical activity and insufficient physical activity (n = 286).

Weight status: underweight, BMI <15th percentile; average weight, BMI 15th to 85th percentile; overweight, BMI 85th to 95th percentile; and obese, BMI >95th percentile. Socio-economic status: high, Social Classes 1 and 2 of Hollingshead's Socio-economic status; medium, Social Classes 3 of Hollingshead's Socio-economic status; low, Social Classes 4 and 5 of Hollingshead's Socio-economic status. Family support level: low, below the 50th of the percentile scores; high, above the 50th of the percentile scores. PEF, Peak expiratory flow; insufficient physical activity, less than 300 minutes per week of moderate and vigorous physical activity. Comparison of the amounts of physical activity and insufficient physical activity (n = 286).