Table 3.
School characteristics at baseline
| n a | Intervention group | Control group | |
|---|---|---|---|
| Mean (SD) | Mean (SD) | ||
| Age | 20 | 12.8 (0.2) | 12.9 (0.3) |
| Female (%) | 20 | 66.1 | 57.6 |
| Physical fitness | |||
| Cardiopulmonary fitness | |||
| 20 m shuttle run (stage) | 20 | 2.5 (0.2) | 2.7 (0.3) |
| 20 m shuttle run (min) | 20 | 1.7 (0.2) | 1.9 (0.4) |
| Speed-agility | |||
| Speed shuttle run (s) | 20 | 24.6 (11.2) | 24.5 (6.6) |
| Plate tapping (s) | 20 | 14.6 (2.6) | 14.2 (5.9) |
| Flexibility | |||
| Sit and reach (cm) | 20 | 20.1 (1.4) | 20.5 (1.2) |
| Muscle strength and endurance | |||
| Sit-up (number/30s) | 20 | 12.0 (0.9) | 12.6 (0.8) |
| Vertical jump (cm) | 20 | 25.4 (1.5) | 26.1 (1.1) |
| Bent arm hang (s) | 20 | 6.0 (23.1) | 6.1 (19.6) |
| Handgrip (kgf) | 20 | 18.4 (0.7) | 19.3 (0.8) |
| Balance | |||
| Flamingo (trying/min) | 20 | 17.9 (1.3) | 18.5 (1.4) |
| Screen time | Median (IQR) | Median (IQR) | |
| TV hours in the week (h/day) | 20 | 1.0 (1.0 – 1.5) | 1.3 (1.0 – 1.5) |
| TV hours in the weekend (h/day) | 20 | 2.0 (2.0 -3.0) | 2.0 (2.0 -2.0) |
| Internet hours in the week (h/day) | 20 | 1.0 (0.5 -1.0) | 0.5 (0.4 -1.0) |
| Internet hours in the weekend (h/day) | 20 | 0.5 (0.0 -1.0) | 0.3 (0.0 -1.0) |
| Video games in the week (h/day) | 20 | 0.0 (0–0) | 0.0 (0–0 ) |
| Video games in the weekend (h/day) | 20 | 0.0 (0.0 – 0.1) | 0.0 (0.0 – 0.1) |
| Total screen time week (h/day) | 20 | 2.3 (2.0 – 2.5) | 2.0 (1.9 – 2.3) |
| Total screen time weekend (h/day) | 20 | 3.5 (3.0 – 4.0) | 3.5 (3.0 – 4.1) |
| % Sedentary week (% screen time >3 h/day) | 20 | 31.2 (11.1) | 28.9 (9.6) |
| % Sedentary weekend (% screen time >3 h/day) | 20 | 50.9 (8.6) | 50.2 (9.4) |
| Accelerometer data | Mean (SD) | Mean (SD) | |
| Total PA (counts/day) | 18 | 308630.8 (38106.2) | 274071.9 (46469.4) |
| Total PA (CPM/day) | 18 | 381.4 (68.6) | 348.4 (71.4) |
| Sedentary time (min/day) | 18 | 480.0 (78.7) | 492.8 (46.4) |
| Light PA (min/day) | 18 | 223.6 (21.1) | 191.1 (34.5) |
| Moderate-vigorous PA (min/day) | 18 | 122.7 (21.0) | 106.7 (16.2) |
| % who meet the PA recommendation (% >60 min MVPA/day) | 18 | 95.0 (6.9) | 93.6 (7.1) |
| Anthropometry | |||
| Body mass index (kg/m^2) | 20 | 19.8 (0.5) | 19.7 (0.4) |
| Body mass index Z-score | 20 | 0.3 (0.2) | 0.3 (0.1) |
| Overweight prevalence (%)b | 20 | 20.8 (7.5) | 19.6 (3.6) |
aTotal number of clusters.
bOverweight and obese combined.
CPM: counts per minute; IQR: interquartile range; MVPA: moderate to vigorous physical activity; PA: physical activity; SD: standard deviation.