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Table 6 Creatinine, cystatin C and cystatin C-estimated GFR before (pre), immediately after (post) and 14 days after (follow-up) the marathon (n= minimum of 155 study participants)

From: Cardiac and renal function in a large cohort of amateur marathon runners

Parameter Pre Post Follow-up p (Pre vs. Post) p (Pre vs. Follow-up)
Creatinine [mg/dL] 0.83 (0.75-0.93) 1.02 (0.88-1.26) 0.82 (0.72-0.92) <0.001 0.003
Cystatin C [mg/dL] 0.68 (0.62-0.78) 0.85 (0.69-0.99) 0.66 (0.59-0.78) <0.001 <0.001
Cystatin C-estimated GFR [mL/min] 125.1 (104.2-141.5) 93.7 (75.7-122.3) 130.2 (104.2-151.2) <0.001 <0.001
  1. Values are shown as median (IQR). Statistically significant values are marked in bold. GFR, glomerular filtration rate.