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 | ||||
| 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, cm2a | 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, cm2a | 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