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Evaluation results of plank support time of subjects' waist and back muscle endurance.
| Experimental stage | Control group (s) | Experimental group (s) |
|---|---|---|
| Before the intervention | 60.7 ± 23.5 | 62.7 ± 30.4 |
| Intervention after 5 weeks | 78.6 ± 20.6 | 89.3 ± 28.1 |
