Participants’ characteristics and sports club involvement in relation to group (SSG, CST and CON) and gender before (pre) and after (post) the 10-month intervention period
| SSG | CST | CON | ||||
|---|---|---|---|---|---|---|
| Pre | Post | Pre | Post | Pre | Post | |
| Age (years) | ||||||
| All | 9.3 (±0.4) | 10.1 (±0.4) | 9.3 (±0.3) | 10.0 (±0.3) | 9.3 (±0.3) | 10.0 (±0.4) |
| Boys | 9.3 (±0.4) | 10.1 (±0.4) | 9.2 (±0.4) | 9.9 (±0.3) | 9.3 (±0.3) | 10.0 (±0.3) |
| Girls | 9.3 (±0.3) | 10.1 (±0.3) | 9.3 (±0.3) | 10.0 (±0.4) | 9.4 (±0.3) | 10.0 (±0.4) |
| Weight (kg) | ||||||
| All | 32.8 (±7.0) | 35.4 (±7.6) | 32.2 (±7.0) | 35.4 (±7.6) | 32.8 (±6.0) | 35.2 (±6.8) |
| Boys | 32.6 (±5.4) | 34.9 (±5.5) | 32.2 (±7.3) | 35.8 (±7.4) | 31.7 (±5.2) | 33.8 (±5.1) |
| Girls | 33.0 (±8.2) | 35.8 (±9.0) | 32.2 (±6.7) | 35.1 (±7.7) | 33.5 (±6.7) | 36.3 (±7.8) |
| Height (m) | ||||||
| All | 138.4 (±6.8) | 142.3 (±7.3) | 137.3 (±5.7) | 141.5 (±6.0)* | 138.4 (±6.0) | 142.2 (±6.4) |
| Boys | 139.2 (±6.4) | 143.0 (±6.8) | 138.7 (±5.5) | 142.7 (±5.7) | 137.9 (±5.3) | 141.5 (±5.3) |
| Girls | 137.6 (±7.1) | 141.7 (±7.6) | 136.0 (±5.7) | 140.4 (±6.1) | 138.7 (±6.5) | 142.8 (±7.0) |
| Tanner stage (1/2/3) % | ||||||
| All | 86/14/0 | 77/23/0 | 98/2/0 | 84/24/0 | 84/14/2 | 73/27/0 |
| Boys | 100/0/0 | 98/2/0 | 100/0/0 | 100/0/0 | 100/0/0 | 100/0/0 |
| Girls | 81/19/0 | 62/38/0 | 95/5/0 | 59/41/0 | 70/26/3 | 54/46/0 |
| Sports club active (%) | ||||||
| All | 73 | 74 | 72 | 73 | 60 | 61 |
| Boys | 76 | 76 | 77 | 79 | 59 | 59 |
| Girls | 71 | 72 | 68 | 67 | 61 | 59 |
Data are presented as mean (±SD), except for Tanner stage distribution (% in 1/2/3, respectively) and the percentage of sports club active children (% of all).
*Denotes difference in change scores compared with CON, p<0.05.
CON, control group; CST, circuit strength training; SSG, small-sided ball game training.