Table 3. Urinary biomarker levels in 47 runners.
Data are expressed as mean ± standard deviation (SD) and minimal–maximal values (Min–Max).
| Parameter | km 0 (baseline) |
km 21 | km 53 | km 80 (arrival) |
Day 9 |
|---|---|---|---|---|---|
| NGAL, pg/mL | |||||
| Mean ± SD | 15164 ± 19919 | 39330 ± 34848 | 75684 ± 65368 | 38447 ± 41023 | 24940 ± 28164 |
| Median | 7008 (95878) | 30090 (142006) | 57859 (313305) | 24702 (188124) | 15547 (132052) |
| Min–Max | 2235–98113 | 2500–144506 | 2500–315805 | 2500–190624 | 2045–134097 |
| NGAL:Cr, pg/mmol | |||||
| Mean ± SD | 4433 ± 5287 | 3735 ± 3117 | 3776 ± 7413 | 1713 ± 1968 | 2349 ± 2372 |
| Median (IQR) | 3302 (3471) | 2771 (3004) | 2196 (2345) | 1208 (1240.7) | 1643 (2178.8) |
| Min–Max | 257.7–31077 | 130.6–13686 | 79.47–49999 | 149.6–12195 | 143.4–8864 |
| KIM1, pg/mL | |||||
| Mean ± SD | 171.6 ± 177.5 | 778.2 ± 1156 | 2204 ± 2222 | 1875 ± 2212 | 672.7 ± 551.7 |
| Median (IQR) | 80.00 (161) | 299.5 (822) | 1433 (1927.9) | 1261 (2131.4) | 475.0 (747.2) |
| Min–Max | 80.00–788.2 | 55.95–5776 | 80.00–13947 | 80.00–13688 | 80.00–2232 |
| KIM1:Cr, pg/mmol | |||||
| Mean ± SD | 61.07 ± 74.92 | 47.10 ± 35.66 | 107.1 ± 176.6 | 74.07 ± 67.45 | 51.03 ± 29.27 |
| Median (IQR) | 40.56 (51.37) | 41.73 (47.87) | 53.79 (49.35) | 59.76 (55.91) | 43.81 (31.84) |
| Min—Max | 8.248–516.1 | 5.027–184.1 | 9.660–962.8 | 2.668–461.0 | 15.98–147.8 |
NGAL = neutrophil gelatinase associated lipocalin, NGAL:Cr = NGAL:creatinine ratio (NGAL:Cr, expressed in pg protein/mmoL urine creatinine), KIM1 = Kidney Injury Molecule-1, KIM1:Cr = KIM1:screatinine ratio (KIM1:Cr, expressed in pg protein/mmoL urine creatinine).