. 2021 Jul 20;11(7):e036471corr1. doi: 10.1136/bmjopen-2019-036471corr1
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| Training group | Control group | |
| N | 54 | 45 |
| Pre-post change score (mean difference) | 0.7 | −1.5 |
| SD | 7.9 | 6.0 |