Table 2.
Differences in body mass index, lifestyles and maximal oxygen uptake between northern and southern children
| Northern girls (n = 161) | Southern girls (n = 160) | P value | Northern boys (n = 168) | Southern boys (n = 124) | P value | |
|---|---|---|---|---|---|---|
| Age (years) | 11.75 ± 0.37 | 12.02 ± 0.61 | 0.000** | 11.72 ± 0.37 | 12.06 ± 0.65 | 0.000** |
| Body mass index (kg/m2) | 19.47 ± 2.73 | 18.97 ± 3.36 | 0.145 | 19.66 ± 3.42 | 19.49 ± 4.13 | 0.704 |
| KIDMED | 7.22 ± 1.74 | 7.64 ± 1.88 | 0.041* | 7.10 ± 2.00 | 7.73 ± 2.07 | 0.008** |
| PAQ-C | 2.81 ± 0.52 | 2.97 ± 0.59 | 0.013* | 3.16 ± .55 | 3.24 ± 0.67 | 0.287 |
| VO2max (ml/kg/min) | 42.99 ± 3.60 | 35.75 ± 9.53 | 0.000** | 46.57 ± 5.18 | 44.08 ± 10.75 | 0.042* |
| Screen time (hours) | 1.55 ± 0.81 | 1.68 ± 1.09 | 0.328 | 1.60 ± 0.93 | 1.59 ± 0.94 | 0.896 |
| Hours of nightly sleep (hours) | 9.54 ± 0.66 | 9.15 ± 1.71 | 0.008** | 9.64 ± 0.79 | 9.15 ± 1.85 | 0.007** |
*P < 0.05; **P < 0.01