Boys (n = 292) | Girls (n = 354) | |||
---|---|---|---|---|
FF1 | FF2 | FF1 | FF2 | |
Age (years) | 16.1 (0.4) | 18.2 (0.4) | 16.1 (0.4) | 18.2 (0.4) |
Height (cm) | 177.3 (6.5) | 179.1 (6.5) | 165.0 (6.5) | 165.7 (6.6) |
Body weight (kg) | 69.9 (13.7) | 75.3 (14.7) | 60.4 (10.7) | 63.1 (12.0) |
Body mass index (BMI) | 22.2 (3.9) | 23.4 (4.2) | 22.2 (3.8) | 23.0 (4.2) |
Body weight categoryb | ||||
Underweight (BMI < 18.5) | 8.6 (25) | 8.2 (24) | 5.9 (21) | 4.5 (16) |
Normal weight (18.5 ≤ BMI < 25) | 70.2 (205) | 63.7 (186) | 75.1 (266) | 74.6 (264) |
Overweight (25 ≤ BMI < 30) | 14.7 (43) | 19.9 (58) | 14.1 (50) | 14.7 (52) |
Obese (BMI ≥ 30) | 6.5 (19) | 8.2 (24) | 4.8 (17) | 6.2 (22) |
Waist circumference (cm) | 81.5 (11.0) | 84.7 (11.8) | 76.6 (9.6) | 77.7 (11.1) |
Total Body Fat Mass (kg) | 14.3 (10.6) | 16.7 (11.6) | 19.8 (8.2) | 21.6 (9.3) |
Fat Mass Index (FMI) | 4.5 (3.3) | 5.2 (3.5) | 7.3 (3.1) | 7.9 (3.4) |
Total Body Lean Mass (kg) | 53.8 (6.6) | 56.1 (7.0) | 38.6 (4.5) | 39.2 (4.8) |
Lean Mass Index (LMI) | 17.1 (1.6) | 17.5 (1.8) | 14.2 (1.3) | 14.2 (1.4) |
Regularity of eating breakfast | ||||
Rarely/never | 12.1 (35) | 14.0 (39) | 11.1 (39) | 11.7 (41) |
1–3 times weekly | 14.8 (43) | 15.8 (44) | 15.0 (53) | 17.1 (60) |
4–6 times weekly | 20.3 (59) | 25.5 (71) | 19.8 (70) | 24.2 (85) |
Daily | 52.8 (153) | 44.8 (125) | 54.1 (191) | 47.0 (165) |
Screen time (hours per weekday) | ||||
0–0.5 h | 3.8 (11) | 5.0 (14) | 3.7 (13) | 4.6 (16) |
1–1.5 h | 12.3 (36) | 14.2 (40) | 24.7 (87) | 27.9 (98) |
2–3 h | 38.4 (112) | 31.0 (87) | 40.3 (142) | 37.3 (131) |
4-6 h | 37.0 (108) | 38.1 (107) | 25.0 (88) | 21.9 (77) |
≥ 7 h | 8.6 (25) | 11.7 (33) | 6.3 (22) | 8.3 (29) |
Leisure time physical activity (hours per week) | ||||
Inactive | 30.5 (89) | 37.1 (104) | 27.4 (97) | 36.2 (127) |
0.5–1.5 h | 8.9 (26) | 8.2 (23) | 8.5 (30) | 12.0 (42) |
2 to 3 h | 16.8 (49) | 11.4 (32) | 22.6 (80) | 16.5 (58) |
4 to 6 h | 23.6 (69) | 21.8 (61) | 27.1 (96) | 23.1 (81) |
≥ 7 h | 20.2 (59) | 21.4 (60) | 14.4 (51) | 12.3 (43) |
Activity status: activec | 60.6 (177) | 54.6 (153) | 64.1 (227) | 51.9 (182) |
Change in activity status | ||||
Consistently inactive | 27.1 (76) | 25.1 (88) | ||
Quitters | 18.2 (51) | 23.1 (81) | ||
Adopters | 11.8 (33) | 11.1 (39) | ||
Consistently active | 42.9 (120) | 40.7 (143) |