title: Cardiac Damage Biomarkers Following a Triathlon in Elite and Non-elite Triathletes.
abstract: The purpose of the present study was to investigate cardiac damage biomarkers after a triathlon race in elite and non-elite athlete groups. Fifteen healthy men participated in the study. Based on performance, they were divided into elite athlete group (EG: n=7) and non-elite athlete group (NEG: n=8). Participants' blood samples were obtained during four periods: before, immediately, 2 hours and 7 days after finishing the race. creatine kinase (CK), creatine kinase-myoglobin (CK-MB), myoglobin, and lactate dehydrogenase (LDH) were significantly increased in both groups immediately after, and 2 hours after finishing the race (p<.05). CK, CK-MB, and myoglobin were completely recovered after 7 days (p<.05). Hematocrit (Hct) was significantly decreased in both groups (p<.05) 7 days after the race. LDH was significantly decreased in the EG (p<.05) only 7 days after the race. Homoglobin (Hb) was significantly decreased in the NEG (p<.05) only 2 hours after the race. Although cardiac troponin T (cTnT) was significantly increased in the EG but not in the NEG 2hours after the race (p<.05), there was no group-by-time interaction. cTnT was completely recovered in both groups 7 days after the race. In conclusion, cardiac damage occurs during a triathlon race and, is greater in elite than in non-elite. However, all cardiac damage markers return to normal range within 1 week.
authors.affiliation: Department of Physical Education, Pusan National University, Busan 609-735, Korea.
authors.forename: Chan-Ho
authors.initials: CH
authors.lastname: Park
authors.affiliation: Department of Sports & Health Management, Youngsan University, Yangsan 626-790, Korea.
authors.forename: Kwi-Baek
authors.initials: KB
authors.lastname: Kim
authors.affiliation: National Research Laboratory for Mitochondrial Signaling, Department of Physiology, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 614-735, Korea.
authors.forename: Jin
authors.initials: J
authors.lastname: Han
authors.affiliation: Department of Physical Education, Dong-Eui University, Busan 614-714, Korea.
authors.forename: Jin-Goo
authors.initials: JG
authors.lastname: Ji
authors.affiliation: Department of Physical Education, Dong-Eui University, Busan 614-714, Korea.
authors.forename: Yi-Sub
authors.initials: YS
authors.lastname: Kwak
keywords: CK-MB; Cardiac damage; Cardiac troponin T; Myoglobin; Triathlon