| 序号 | 研究主题 | 频次 | 中心值 | 年份 |
| 1 | physical activity | 487 | 0.21 | 2004 |
| 2 | autonomy | 9 | 0.17 | 2009 |
| 3 | environment | 216 | 0.16 | 2004 |
| 4 | pretend play | 170 | 0.16 | 2005 |
| 5 | mind | 86 | 0.15 | 2005 |
| 6 | depression | 57 | 0.14 | 2005 |
| 7 | overweight | 159 | 0.13 | 2005 |
| 8 | predictor | 123 | 0.13 | 2005 |
| 9 | playground | 63 | 0.13 | 2004 |
| 10 | memory | 55 | 0.13 | 2005 |
| 11 | competence | 140 | 0.12 | 2005 |
| 12 | boy | 63 | 0.12 | 2005 |
| 13 | role | 11 | 0.12 | 2005 |
| 14 | fundamental movement skill | 5 | 0.12 | 2020 |
| 15 | transition | 28 | 0.11 | 2010 |
| 16 | representational play | 2 | 0.11 | 2005 |
| 17 | impact | 208 | 0.10 | 2004 |
| 18 | skill | 183 | 0.10 | 2005 |