Professional soccer player’s creatine kinase concentration from 20 matches of the Brazilian soccer championship.

We investigated individualized threshold values for creatine kinase (CK) monitoring. CK concentration was collected from 52 players between 24 to 48 hours after matches throughout six full seasons of the Brazilian soccer championship, each measurement is representative of a match played. The data shows CK concentration of 20 matches and respective elements of the 10th matches’ box plots (which were used to determine individualized reference thresholds), besides that, muscle overload detection was computed using individual upper limits as reference values and using a recommended group-based cutoff value of 1270 U/L . This data set can be used to draw conclusions about muscle overload