Table 1.
Descriptive statistics for the study variables across groups that differed in their levels of physical activity and fitness.
| Variable | Mean (SD) | |||||
|---|---|---|---|---|---|---|
| Activity Status | Fitness Status | |||||
| Total Sample | Active | Inactive | Fit | Unfit | ||
| n = 111 | n = 27 | n = 84 | n = 29 | n = 82 | ||
| Age (years) | 13.6 (0.8) | 13.7 (0.9) | 13.6 (0.7) | 13.1 (0.7) † | 13.8 (0.8) | |
| Height (cm) | 154 (10) | 153 (10) | 155 (10) | 154 (11) | 155 (10) | |
| Weight (kg) | 46.8 (11.8) | 44.5 (11.3) | 47.5 (11.9) | 42.4 (9.1) † | 48.3 (12.3) | |
| BMI (kg/m²) | 19.3 (3.3) | 18.8 (2.7) | 19.5 (3.4) | 17.8 (2.3) † | 19.8 (3.4) | |
| BMI (z-score) | 0.2 (1.5) | −0.2 (1.3) | 0.2 (1.6) | −0.3 (1.1) † | 0.4 (1.6) | |
| 20 m SRT (speed) | 9.7 (0.6) | 10.1 (0.6) * | 9.5 (0.62) | 10.3 (0.4) † | 9.5 (0.6) | |
| 20 m SRT (z-score) | −1.2 (0.5) | −0.9 (0.4) * | −1.3 (0.5) | −0.6 (0.2) † | -1.4 (0.4) | |
| VO2 peak (mL/kg/min) | 38.5 (0.5) | 40.5 (2.6) * | 37.8 (3.5) | 42.5 (1.4) † | 37.1 (2.9) | |
| Daily MVPA (min) | 50.6 (25.5) | 75.9 (22.4) * | 42.5 (21.3) | 56.8 (21.6) | 48.4 (21.0) | |
| PE-MVPA (min) | 9.9 (3.6) | 10.8 (4.0) | 9.7 (3.4) | 10.3 (3.9) | 9.8 (3.4) | |
| PE-MVPA (%) | 22.1 (7.9) | 23.9 (9.1) | 21.5 (7.5) | 22.9 (8.6) | 21.8 (7.7) | |
Note. * The mean is significantly different from that of the inactive group (p < 0.05). † The mean is significantly different from that of the unfit group (p < 0.05).