Table 1 Demographic and clinical characteristics of 1882 Hong Kong Chinese school children aged 6-20 years who completed the physical activity survey
Characteristics | Boys (n = 780) | Girls (n = 1102) |
|---|---|---|
Age (years) | 13.2 (3.3) | 13.8 (3.3) |
Weight (kg) | 47.7 (15.0) | 44.2 (11.5) |
Height (cm) | 155.6 (17.0) | 151.7 (12.6) |
Body Mass Index (kg/m2) | 19.2 (3.4) | 18.9 (3.1) |
Waist circumference (cm) | 66.9 (9.8) | 64.3 (7.9) |
Systolic blood pressure (mmHg) | 114.0 (12.2) | 107.3 (9.7) |
Diastolic blood pressure (mmHg) | 67.0 (8.7) | 67.0 (7.9) |
HDL-C (mmol/L) | 1.6 (0.3) | 1.6 (0.3) |
LDL-C (mmol/L) | 2.1 (0.6) | 2.2 (0.6) |
TC/HDL-C ratio†| 2.6 (2.3 - 3.0) | 2.6 (2.3 - 2.9) |
Triglyceride (mmol/L)†| 0.7 (0.6 - 1.0) | 0.7 (0.6 - 1.0) |
Fasting plasma glucose (mmol/L) | 4.8 (0.4) | 4.7 (0.3) |
Obesity statusψ |  |  |
   Normal | 598 (76.7%) | 918 (83.3%) |
   Overweight | 112 (14.4%) | 122 (11.1%) |
   Obese | 70 (9.0%) | 62 (5.6%) |
Puberty (tanner stage)ψ |  |  |
   1 | 178 (24.0%) | 163 (15.1%) |
   2 | 156 (21.1%) | 122 (11.3%) |
   3 | 148 (20.0%) | 255 (23.7%) |
   4 | 234 (31.6%) | 429 (39.9%) |
   5 | 25 (3.4%) | 107 (9.9%) |
Physical activity scoreψ |  |  |
   0 - 2 (Low) | 117 (15.0%) | 306 (27.8%) |
   3 - 6 (Moderate) | 413 (52.9%) | 641 (58.2%) |
   7 - 10 (High) | 250 (32.1%) | 155 (14.1%) |