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The rate of abnormal Z lines in the medial rectus muscle in the two groups
| Groups | 1st month | 2nd month | 3rd month | F | P |
|---|---|---|---|---|---|
| Experimental | 21.25±1.50 | 33.75±2.63 | 49.5±1.00 | 236.45 | <0.01 |
| Sham | 20.75±0.95 | 21.75±1.25 | 21.5±1.29 | 0.779 | >0.05 |
| t | 0.562 | 8.23 | 34.272 | ||
| P | >0.05 | <0.01 | <0.01 |
