Table 2.
Differences between the pre- and postintervention measurements in the experimental group (EG) and control group (CG) groups of adolescents who are overweight or obese in physical activity, adherence to the Mediterranean diet (AMD), and psychological state.
| Variables and time point | Before intervention, mean (SD) | After intervention, mean (SD) | Prepost difference, mean (SD) | F test (df) | P value | 95% CI difference | η2 | ||||||||
| Physical activity | |||||||||||||||
|
|
EG | 2.51 (0.74) | 2.62 (0.68) | –0.11 (0.07) | 2.430 (1) | .13 | –0.248 to 0.031 | 0.048 | |||||||
|
|
CG | 2.63 (0.64) | 2.69 (0.55) | –0.06 (0.07) | 0.706 (1) | .41 | –0.207 to 0.085 | 0.015 | |||||||
| AMD | |||||||||||||||
|
|
EG | 6.73 (2.16) | 6.46 (2.45) | 0.27 (0.39) | 0.489 (1) | .49 | –0.505 to 1.044 | 0.010 | |||||||
|
|
CG | 7.21 (2.43) | 6.42 (2.62) | 0.79 (0.40) | 3.901 (1) | .05 | –0.014 to 1.598 | 0.075 | |||||||
| Life satisfaction | |||||||||||||||
|
|
EG | 17.00 (3.14) | 16.88 (2.90) | 0.12 (0.70) | 0.027 (1) | .87 | –1.296 to 1.527 | 0.001 | |||||||
|
|
CG | 18.46 (4.40) | 17.21 (5.21) | 1.25 (0.73) | 2.926 (1) | .09 | –0.219 to 2.719 | 0.094 | |||||||
| Competence | |||||||||||||||
|
|
EG | 24.54 (96.18) | 23.85 (5.05) | 0.69 (1.31) | 0.281 (1) | .60 | –1.933 to 3.317 | 0.006 | |||||||
|
|
CG | 26.83 (5.98) | 23.75 (9.40) | 3.08 (1.36) | 5.148 (1) | .03 | 0.351 to 5.816 | 0.097 | |||||||
| Autonomy | |||||||||||||||
|
|
EG | 23.96 (5.71) | 23.88 (5.64) | 0.07 (1.70) | 0.002 (1) | .96 | –3.338 to 3.491 | 0.001 | |||||||
|
|
CG | 25.75 (5.03) | 24.08 (8.67) | 1.67 (1.77) | 0.889 (1) | .35 | –1.887 to 5.221 | 0.018 | |||||||
| Relatedness | |||||||||||||||
|
|
EG | 24.15 (6.70) | 24.54 (6.33) | –0.39 (1.35) | 0.082 (1) | .78 | –0.385 to 1.347 | 0.002 | |||||||
|
|
CG | 23.13 (5.98) | 20.42 (8.58) | 2.71 (1.40) | 3.734 (1) | .06 | 2.708 to 1.402 | 0.072 | |||||||