Ausência de desgaste agudo da musculatura esquelética e cardíaca em atletas amadores de triathlon

Abstract

Creatine kinase (CK) and creatine kinase muscle-brain fraction (CK-MB) might be associated with damage to muscle and cardiac tissue, respectively, as a consequence of intense prolonged exercise. The objective of the present study was to determine whether acute changes in CK and CK-MB reflect some risk of damage to skeletal and cardiac muscles in amateur athletes after Ironman 70.3. The sample consisted of 10 male athlete volunteers (age: 34.0 ± 9.2 years). A venous blood sample (2 mL) was collected before and after the competition. The volunteers completed the race in 5h20min to 6 h. CK and CK-MB were analyzed by an enzymatic method using Wiener lab® reagent in an automatic spectrophotometer (Targa bt 3000®). The nonparametric Wilcoxon test showed significant differences (p