2.4.1. Blood Samples
muscle damage, tissue damage
Venous blood was drawn from the antecubital vein during each visit, and serum and lithium heparin plasma samples were stored at −80 °C until further analyses. Analyses were performed by trained technicians using standard operating procedures. CK and LDH levels were measured using a C8000 module C720 clinical chemistry analyzer (Roche, Almere, The Netherlands) to identify muscle damage and tissue damage, respectively.