Serum creatine kinase (SCK) was measured in 19 well-trained athletes before, immediately after and 24 and 72 h after a 120-km, non-stop march. The mean level before the march was 97.6 ± 46.6 (SD), immediately after the march 1072.8 ± 708 μm/l, and 72 h later 185.6 ± 106.2 μm/l. It is concluded that elevated SCK levels may persist for 72 h after a long march.
- SCK-MB fractions
- Serum creatine kinase activity