title: Myocardial response to a triathlon in male athletes evaluated by Doppler tissue imaging and biochemical parameters.
abstract: The aim of this study was to examine cardiac dysfunction following ultra-endurance exercise in male athletes. Fourteen athletes (mean+/-SD, age 39+/-8 years) were evaluated before and after the European Championship in Triathlon 2003 using echocardiogram (ECG), cardiac markers [cardiac troponin T (cTnT) and pro-brain natriuretic peptide (pro-BNP)] and echocardiography. Conventional echocardiography techniques and new Doppler tissue imaging (DTI) modalities were applied before and immediately after the competition. Blood samples were drawn 1 week before, immediately after and 12-24 h post-competition. CTnT significantly increased immediately, but decreased to within normal limits 12-24 h post-competition. Pro-BNP was significantly increased immediately post-race (27+/-21 vs 7+/-2 pmol/L pre-race, P < or = 0.007), which 12-24 h later, decreased to 19+/-14 pmol/L (P = 0.07 vs pre-race). During echocardiography, no significant differences were found in regional or global systolic parameters. Early diastolic peak flow velocity (9+/-2, P = 0.04) and E/A ratio (2+/-1, P = 0.004) were increased pre-race and decreased significantly toward normal values. In one athlete, cTnT levels increased significantly and systolic velocities decreased, thus suggesting reversible cardiac fatigue. When using cardiac markers and echocardiographic findings, a triathlon was found to have no significant negative effects on left ventricular function or myocardial tissue in male athletes.
authors.affiliation: Department of Internal Medicine, Fredericia Hospital, Fredericia, Denmark. tina.leetmaa.@gmail.com
authors.forename: T H
authors.initials: TH
authors.lastname: Leetmaa
authors.forename: A
authors.initials: A
authors.lastname: Dam
authors.forename: D
authors.initials: D
authors.lastname: Glintborg
authors.forename: J D
authors.initials: JD
authors.lastname: Markenvard
mesh_terms: D000328:Adult; D015415:Biomarkers; D002302:Cardiac Output / Q000502:physiology*; D019560:Echocardiography, Three-Dimensional; D006801:Humans; D008297:Male; D008875:Middle Aged; D020097:Natriuretic Peptide, Brain / Q000032:analysis / Q000097:blood; D005082:Physical Exertion / Q000502:physiology*; D020107:Troponin T / Q000032:analysis / Q000097:blood
chemical_list: D015415:Biomarkers; D020107:Troponin T; D020097:Natriuretic Peptide, Brain