Table 1.
Characteristics of the study sample.
| Variable | Overall (N=34) |
|---|---|
| Age | 28.8 ± 8.0 |
| Male No., (%) | 18 (52) |
| Black No., (%) | 17 (50) |
| Body mass index (kg/m2) | 25.9 ± 3.5 |
| Baseline Blood Values | |
| Phosphorus (mg/dL) | 3.81 ± 0.4 |
| Calcium (mg/dL) | 9.38 ± 0.4 |
| Intact parathyroid hormone (pg/ml) | 40.2 ± 12.9 |
| Fibroblast growth factor 23 (RU/ml) | 70.6 [58.5,85.7] |
| Osteocalcin (ng/ml) | 18.0 ± 8.5 |
| CTX (ng/ml) | 0.56 ± 0.32 |
| P1NP (pg/L) | 64.8 ± 25.0 |
| Osteopontin (ng/ml) | 33.9 ± 12.1 |
| HOMA-IR | 1.87 ± 0.91 |
| Baseline Urine Values | |
| 24-hour urine phosphorus (mg/day) | 766 ± 280 |
| 24-hour urine calcium (mg/day) | 122 ± 67 |
| 24-hour urine sodium (mmol/day) | 139 ± 41 |
| Creatinine clearance (ml/min) | 126 ± 29 |
Values are presented as means ± standard deviation, number (frequency) or median [interquartile range]. CTX, C-terminal telopeptide of type 1 collagen; P1NP, procollagen type 1 N-terminal propeptide; HOMA-IR, homeostatic model assessment-insulin resistance