Associations between accelerometer-measured physical activity and body fatness in school-aged children

Table 2 Differences in body fatness indicators between differentially active children grouped by sex

	First tertile		Second tertile		Third tertile		F	P _MVPA	P _trend
	Mean	SD	Mean	SD	Mean	SD	F	P _MVPA	P _trend
Girls (N = 209)
Fat mass, kg	7.9	5.5^*	6.9	4.4	6.4	3.9	1.97	0.142	0.051
Fat mass, %	20.1	8.5^*	18.1	7.3	16.9	7.1	3.09	0.048	0.015
Fat mass index, kg · m⁻²	3.8	2.4^*	3.3	1.9	3.1	1.8	2.37	0.096	0.035
Visceral adipose tissue, cm^2a	37.3	27.3^*	31.4	22.6	28.0	21.8	2.26	0.107	0.036
Boys (N = 156)
Fat mass, kg	7.8	5.8^*	6.7	5.2	5.7	3.8	2.21	0.113	0.038
Fat mass, %	18.4	8.9^*	16.1	8.3	15.0	7.0	2.36	0.092	0.035
Fat mass index, kg · m⁻²	3.6	2.4^*	3.1	2.3	2.8	1.7	2.12	0.123	0.044
Visceral adipose tissue, cm^2a	42.3	32.0^*	34.4	26.5	28.3	21.0	2.42	0.092	0.030

The cut-off points of the tertiles were 28.8 and 41.1 min · d⁻¹ for girls and 39.8 and 51 min · d⁻¹ for boys
N number of participants, SD standard deviation, MVPA moderate-to-vigorous physical activity, P _MVPA P-value for one-way analysis of variance, P _trend P-value for linearity test
^*Significantly different from the third tertile, Fisher’s LSD post-hoc test after one-way analysis of variance, P < 0.05
^aValues were transformed to natural logarithms before analysis

ISSN: 1347-4715