Table 1.
Descriptive statistics for the study sample at baseline
| Baseline - 2006 | ||||||
|---|---|---|---|---|---|---|
| Variables | Intervention group | Control group | ||||
| Total (n = 100) | Boys (n = 48) | Girls (n = 52) | Total (n = 96) | Boys (n = 39) | Girls (n = 57) | |
| Age and body composition | median(QD) | median(QD) | median(QD) | median(QD) | median(QD) | median(QD) |
| Age (years) | 7.3 (0.2) | 7.3 (0.3) | 7.3 (0.3) | 7.4 (0.2) | 7.3 (0.2) | 7.4 (0.2) |
| Height (cm)a | 127.6 (5.1) | 127.9 (4.9) | 127.3 (5.3) | 127.2 (5.2) | 128.4 (5.1) | 126.4 (5.1) |
| Weight (kg) | 25.9 (2.4) | 26.2 (2.0) | 25.4 (2.7) | 26.8 (2.4) | 27.5 (2.2) | 25.7 (2.4) |
| BMI | 15.8 (1.1) | 15.8 (0.9) | 15.8 (1.2) | 16.3 (1.0) | 16.6 (0.7) | 16.0 (1.1) |
| Physical activity - accelerometers | median(QD) | median(QD) | median(QD) | median(QD) | median(QD) | median(QD) |
| cpm at schoolb | 721.6 (210.1) | 790.8 (201.4) | 656.5 (198.6) | 655.1 (220.7) | 728.8 (177.0) | 606.0 (234.4) |
| MVPA at school (min)c | 36.3 (14.3) | 45.2 (16.1) | 30.2 (12.6) | 32.2 (11.6) | 40.7 (9,5) | 26.8 (15.3) |
| MVPA after school (min)c | 29.7 (11.2) | 29.7 (12.5) | 29.8 (10.5) | 31.6 (15.0) | 40.8 (12.0) | 29.1 (17.3) |
amean and standard deviation, not median (QD)
bcpm:counts per minute
cMVPA: moderate-to-vigorous physical activity defined as >2000 accelerometer counts per minute