Table 3. Physiological effects of ultraendurance cycling on selected biochemical parameters (values in brackets indicate normal range).
Before race Immediately after 24h after
Creatinine (0.70 - 1.40 mg.L-1) 0.96 0.93 1.04
Urea (10 - 50 mg.dL-1) 33 58 57
Uric acid (2.40 - 7.50 mg.dL-1) 5.0 5.9 5.9
Protein (6.3 - 8.2 g.dL-1) 7.41 7.67 7.54
CK (12 - 126 U.L-1) 43 420 482
LDH (120 - 240 U.L-1) 200 239 266
cTnI (< 0.05 mg.L-1) n.d. n.d. n.d.
CRP (0 - 0.7 mg.L-1) < 0.7 2.03 1.89
Na+ (135 - 152 mmol.L-1) 142 145 144
K+ (3.4 - 4.6 mmol.L-1) 4.0 3.5 3.5
Cl- (95 - 110 mmol.L-1) 102 98 101
Ca2+ (2.1 -2.7 mmol.L-1) 2.27 2.46 2.15
Mg2+ (0.60 - 0.95 mmol.L-1) 0.83 0.97 0.91
RBC (4.4 - 5.9 x 1012.L-1) 4.39 4.42 4.15
Hct (0.40 - 0.52) 0.40 0.41 0.39
Hb (13.3 - 17.7 g.dL-1) 14.0 14.2 13.2
%∆PV (related to pre-race) - - 2 + 9
Leukocytes (4 - 10 x 109.L-1) 5.4 12.8 9.7
Thrombocytes (140 - 400 x 109.L-1) 261 325 275
n.d. = not detectable