Effects of Acute Resistance Training on Biochemical Markers of Myocardial Injury (cTnT, cTnI, CK-MB) in Non-Athlete Women

The purpose of this study was to evaluate the effects of acute resistance training on changes in biochemical markers of myocardial injury (cTnT, cTnI, CK-MB) in non-athlete women. In this study, 18 healthy young women with a mean age (23.41 years) and body fat percent (21.62) participated voluntarily. Untrained women performed 7 resistance exercises at 70% 1RM in 3 sets and 10 repetitions. Rest interval between sets was 2 minutes. Blood samples were obtained before, immediately, 1, 24, and 48 hours after exercise. Statistical analyses were conducted using ANOVA with repeated measure (P ≤ 0.05). The results revealed a significant difference in troponin I in pre-test immediately and 1 hour after exercise, but 24 hours and 48 hours after, it returned to baseline. There was also a significant difference in troponin T and CK-MB in pre-test immediately and 1 hour and 24 hours after exercise, but they returned to baseline after 48 hours. It can be concluded that resistance exercise may lead to an increase in cardiac troponin and CK iso-enzyme. However, it seems to be a temporary increment and do not cause cardiac damage.