Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Boxplots showing the CK concentrations (U/L) in the venous blood for all participants at baseline, postmarathon, and follow‐up (a) showing all participants and (b) with exclusion of participants with overt injuries. Significant differences are indicated with an asterisk (*).
