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| Subjects* | Before intervention | After 4 weeks | After 8 weeks |
|---|---|---|---|
| 1 (M) | 10 | 0 | 0 |
| 2 (M) | 10 | 0 | 0 |
| 3 (M) | 13 | 7 | 0 |
| 4 (M) | 11 | 5 | 5 |
| 5 (F) | 12 | 0 | 0 |
| Mean±SD | 11.2±1.3 | 2.4±3.4 | 1.0±2.2 |
F: female; M: male *Adapted from Byeon, 2008
