Table 1 Participant characteristics at 9 and 15 years of age (n = 139)
From: Dieting is associated with reduced bone mineral accrual in a longitudinal cohort of girls
9 years | 15 years | Change from 9 to 15 years | |
|---|---|---|---|
Mean (SD) | |||
Height (cm) | 136.2 (6.2) | 164.6 (6.6) | 28.4 (4.3) |
Weight (kg) | 34.3 (7.4) | 60.2 (11.9) | 25.9 (8.8) |
BMI percentile | 64.2 (26.6) | 61.1 (25.0) | −3.1 (21.2) |
Total body BMC (g) | 952 (147) | 2055 (260) | 1104 (168) |
BMD (g/cm2) | 0.837 (0.045) | 1.090 (0.075) | 0.253 (0.049) |
Breast Tanner score | 1.76 (0.8) | NA | |
Physical activity (times participated/week) | 12.8 (7.7) | NA | |
N (%) | |||
% overweight (≥85th percentile) | 40 (28.8) | 30 (21.6) | |
Family income1 | |||
<$35,000 | 22 (15.9) | 15 (11.0) | |
$35,000–$50,000 | 40 (29.0) | 21 (15.3) | |
>$50,000 | 76 (55.1) | 101 (73.7) | |
Parents married | 129 (92.8) | 122 (88.4) | |