| Variable | Categories | Experimental (n = 23) n(%) or Mean ± SD | Control (n = 51) n(%) or Mean ± SD | χ2 or t | p |
| Gender | Boy | 11 (47.8) | 25 (49.0) | 0.01 | 0.924 |
| Girl | 12 (52.2) | 26 (51.0) |
|
| |
| Grade | 4th grade | 12 (52.2) | 27 (52.9) | 0.00 | 0.951 |
| 5th grade | 11 (47.8) | 24 (47.1) |
|
| |
| Perceived health status | Healthy | 16 (69.6) | 45 (88.2) | 5.28* | 0.071 |
| Moderate | 7 (30.4) | 5 (9.8) | |||
| Unhealthy | 0 (0) | 1 (2.0) | |||
| Perceived body shape | Thin | 9 (39.1) | 11 (21.6) | 3.03 | 0.220 |
| Moderate | 6 (26.1) | 22 (43.1) | |||
| Fat | 8 (34.8) | 18 (35.3) | |||
| Economic status | High | 11 (47.8) | 30 (58.8) | 0.79* | 0.674 |
| Middle | 11 (47.8) | 19 (37.3) | |||
| Low | 1 (4.4) | 2 (3.9) | |||
| Walking time/day (minutes) | 55.43 ± 51.05 | 69.58 ± 49.17 | −1.13 | 0.260 | |
| Self-report questionnaire | Depression | 7.78 ± 4.66 | 7.12 ± 6.46 | 0.44 | 0.659 |
| ADHD | 13.44 ± 8.31 | 11.82 ± 8.32 | 0.77 | 0.443 | |
| Health promotion behavior | 109.70 ± 13.68 | 112.25 ± 15.88 | −0.71 | 0.480 | |