Weight trajectories since birth and current body composition in young, normal-weight Japanese women with low, normal and high percentage body fat
| Percentage body fat | * | |||
| Low | Normal | High | ||
| n=67 | n=160 | n=24 | ||
| Weight (g or kg) at birth | 3166 ± 409 | 3211 ± 381 | 3178 ± 401 | |
| At 12 years | 41.0 ± 5.2 | 44.1 ± 6.0 | 45.2 ± 9.2 | †‡ |
| At 15 years | 47.1 ± 4.3 | 49.8 ± 5.6 | 53.3 ± 6.4 | †‡§ |
| At 20 years | 48.8 ± 3.8 | 52.5 ± 4.5 | 56.9 ± 4.6 | †‡§ |
| ΔWeight0–12 (kg) | 37.8 ± 5.1 | 40.9 ± 5.9 | 42.0 ± 9.1 | †‡ |
| Height (cm) at 12 years | 148.8 ± 6.2 | 151.9 ± 5.5 | 150.7 ± 9.0 | † |
| At 15 years | 155.4 ± 5.4 | 157.6 ± 4.6 | 157.7 ± 5.3 | † |
| At 20 years | 158.3 ± 5.4 | 159.1 ± 4.8 | 159.4 ± 4.9 | |
| BMI (kg/m2) at 12 years | 18.4 ± 1.8 | 19.1 ± 2.0 | 19.7 ± 2.7 | |
| At 15 years | 19.5 ± 1.3 | 20.0 ± 1.8 | 21.4 ± 2.0 | ‡ |
| At 20 years | 19.5 ± 0.8 | 20.7 ± 1.3 | 22.4 ± 1.6 | †‡§ |
| Waist (cm) | 68.1 ± 4.1 | 72.2 ± 4.4 | 78.6 ± 3.7 | †‡§ |
| Percentage body fat (%) | 22.9 ± 1.9 | 29.3 ± 2.7 | 36.7 ± 1.5 | †‡§ |
| Percentage trunk fat (%) | 23.1 ± 2.4 | 30.4 ± 3.6 | 38.6 ± 2.2 | †‡§ |
| %ASM (%) | 30.6 ± 1.4 | 28.4 ± 1.6 | 25.5 ± 1.4 | †‡§ |
| Trunk/leg fat ratio | 1.19 ± 0.20 | 1.28 ± 0.25 | 1.36 ± 0.23 | †‡ |
| ASMI (kg/m2) | 6.0 ± 0.4 | 5.9 ± 0.5 | 5.7 ± 0.5 | |
| FMI (kg/m2) | 4.4 ± 0.5 | 6.0 ± 0.8 | 8.1 ± 0.8 | †‡§ |
Mean±SD ΔWeight0–12: weight gain from birth to age 12 years.
*P<0.05 or less by Bonferroni's multiple comparison procedure.
†Low versu normal.
‡Low versus high.
§Normal versus high.
ASM, appendicular skeletal muscle mass; BMI, body mass index; FMI, fat mass index.