| 25(OH)D | 25-hydroxyvitamin D |
| 1,25(OH)D | 1,25-dihydroxyvitamin D |
| ASM | Appendicular skeletal mass |
| BIA | Bioelectrical impedance analysis |
| BMI | Body mass index |
| EQ-5D-5L | EuroQol-5 dimensions-5 level |
| IQR | Interquartile range |
| LDD | Lumbar disc degeneration |
| ODI | Oswestry Disability Index |
| PTH | Parathyroid hormone |
| SMI | Skeletal muscle index |
| SPPB | Short physical performance battery |
| SPSS | Statistical Package for the Social Sciences |
| TUG | Timed Up and Go |
| VAS | Visual analog scale |
| VDR | Vitamin D receptor |
| WC | Waist circumference |
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