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Muscle damage markers measured one and two days post-race. The muscle damage markers CK (creatine kinase) (A) and LDH (lactate dehydrogenase) (B) in U/L (units/liter) are shown for the protein group (n = 75) (● dark blue circles) and the placebo group (n = 74) (▪ light blue squares) with the median and interquartile range (IQR), based on intention-to-treat analysis. Similar concentrations of the muscle damage markers CK and LDH were found between groups.
