Table 1.

Descriptive characteristics by gender (numbers and percentages).

		Boys			Girls
		Mean	±	SD	Mean	±	SD
Age		9.1	±	1.7	9.3	±	1.5
Height		131.4	±	10.5	135.4	±	13.2
Weight		29.7	±	7.6	31.0	±	8.0
BMI		16.9	±	2.4	16.6	±	2.1
PA in morning recess		n = 39			n = 29
	Sedentary	7.5	±	4.5	9.0	±	4.4
	Light PA	12.1	±	2.8	13.7	±	3.9
	Moderate PA	1.7	±	1.1	1.7	±	1.1
	Vigrous PA	4.7	±	3.4	1.6	±	1.0
PA in lunch recess		n = 40			n = 29
	Sedentary	2.8	±	2.3	3.2	±	2.2
	Light PA	9.8	±	2.0	9.8	±	2.3
	Moderate PA	1.4	±	0.8	1.5	±	0.8
	Vigrous PA	2.1	±	1.7	1.4	±	1.3

PA: physical activity, SD: standard deviation, numbers in Table 1 are rounded.