Table 2.
Means, standard deviations and gender differences for the observed variables
| Total (M; SD) | Boys (M; SD) | Girls (M; SD) | t value | Cohen’s d | |
|---|---|---|---|---|---|
| Age | 12.63 (1.30) | 12.99 (1.31) | 12.46 (1.26) | 3.49*** | 0.42 |
| VPA (MET min/week) | 1361.04 (1365.72) | 1878.93 (2020.63) | 1544.95 (1922.33) | 1.43 | 0.17 |
| MPA (MET min/week) | 880.35 (942.92) | 909.9 (999.27) | 931.26 (1132.17) | − 0.160 | − 0.02 |
| Walking (MET min/week) | 761.46 (758.98) | 712.96 (786.06) | 868.09 (1052.96) | -1.33 | − 0.16 |
| PACES | 4.04 (0.68) | 3.59 (0.71) | 3.25 (0.71) | 3.79*** | 0.48 |
| PE Enjoyment | 3.36 (0.71) | 4.17 (0.65) | 3.99 (0.72) | 2.14* | 0.27 |
| Reading | 3.66 (0.91) | 3.52 (0.85) | 3.7 (0.95) | -1.55 | − 0.19 |
| Mathematics | 3.03 (1.04) | 3.31 (0.96) | 2.93 (1.09) | 2.94** | 0.36 |
| General School Concept | 3.15 (0.68) | 3.35 (0.69) | 3.04 (0.67) | 3.72*** | 0.46 |
| General Self-Concept | 4.01 (0.73) | 4.15 (0.64) | 3.93 (0.76) | 2.44* | 0.3 |
| Physical Ability | 3.19 (0.87) | 3.42 (0.76) | 2.87 (0.7) | 6.18*** | 0.75 |
| Physical Appearance | 3.38 (0.92) | 3.6 (0.87) | 3.27 (0.93) | 2.99** | 0.37 |
| Peer Relation | 3.34 (0.84) | 3.61 (0.86) | 3.19 (0.82) | 4.00*** | 0.50 |
| Parent Relation | 3.93 (0.84) | 3.86 (0.61) | 3.77 (0.74) | 1.10 | 0.13 |
Note. *p < .05; ** p < .01; *** p < .001; The mean values of PACES enjoyment, PE enjoyment and SDQ-I are standardized values