Table 1 Characteristics for participants 15–17 years old
GIRLS n = 395 | BOYS n = 363 | |
|---|---|---|
Age, year | 16.6 (0.4) | 16.7 (0.4) |
Height, m | 1.65 (0.06) | 1.77 (0.07) |
Weight, kg | 60.7 (11.5) | 69.8 (13.3) |
BMI, kg/m2 | 22.2 (3.9) | 22.2 (3.8) |
Lean mass, kg | 38.7 (4.6) | 53.9 (6.6) |
Fat mass, kg | 20.1 (8.8) | 14.1 (10.1) |
Menarche age girls, years | 13.0 (1.2) | |
Puberty boys, PDS score (Range 1; Not started – 4; Completed) | 3.3 (0.4) | |
Puberty boys, PDS groups, % (n) Completed/ Underway/ Barely started/ Not started | 8.3 (30)/75.2 (273)/16.5(60)/0(0) | |
Serum VitD, nmol/l | 54.8 (23.1) | 40.8 (20.2) |
Physical activity levels, % (n) | ||
• Sedentary | 12.7 (50) | 27.8 (101) |
• Moderate | 40.0 (158) | 23.7 (86) |
• Sports | 30.1 (119) | 22.0 (80) |
• Hard training | 17.2 (68) | 26.4 (96) |
Smoking habits, daily or sometimes, % (n) | 19.2 (76) | 21.2 (77) |
Alcohol consumption, sometimes, % (n) | 74.9 (296) | 68.0 (247) |
Calcium intake, cheese weekly/diary daily, % (n) | 88.4 (349) | 90.4 (328) |
aBMD, g/cm2 | ||
• Total hip | 1.062 (0.123) | 1.120 (0.149) |
• Femoral neck | 1.069 (0.124) | 1.109 (0.149) |