title: [Biochemical changes after strenuous exercise – data from the Kalmar Ironman].
abstract: Biochemical changes after strenuous exercise - data from the Kalmar Ironman Strenuous and prolonged exercise like marathon, ultra running and triathlon can lead to changes in biomarkers of cardiac, muscle and kidney functional damage. We present the data of 30 (15 men, 15 women) participants of the Kalmar Ironman 2015. Pre-race electrocardiograms and echocardiograms showed a high frequency of abnormalities. Post race elevations of troponin T, creatine kinase, myoglobin, N-terminal prohormone of brain natriuretic peptide, and creatinine returned to normal in almost all cases within 5-8 days. In all but one participant the troponin T pattern was compatible with the diagnosis of myocardial infarction. It is an up-to-date unanswered question whether the increase of troponin represents myocardial damage or just is a benign consequence of an intermittent change of the permeability of myocardial cell membranes.
authors.affiliation: Länssjukhuset - Medicin/kardiologi Kalmar, Sweden Länssjukhuset - Medicin/kardiologi Kalmar, Sweden.
authors.forename: Jörg
authors.initials: J
authors.lastname: Carlsson
authors.affiliation: Linnéuniversitetet, Institutionen för idrottsvetenskap - Kalmar, Sweden Linnéuniversitetet, Institutionen för idrottsvetenskap - Kalmar, Sweden.
authors.forename: Thony
authors.initials: T
authors.lastname: Ragnarsson
authors.affiliation: Linnéuniversitetet, Institutionen för idrottsvetenskap - Kalmar, Sweden Linnéuniversitetet, Institutionen för idrottsvetenskap - Kalmar, Sweden.
authors.forename: Tom
authors.initials: T
authors.lastname: Danielsson
authors.affiliation: Länssjukhuset - Medicin/kardiologi Kalmar, Sweden Länssjukhuset - Medicin/kardiologi Kalmar, Sweden.
authors.forename: Therése
authors.initials: T
authors.lastname: Johansson
authors.affiliation: Länssjukhuset - Medicin/kardiologi Kalmar, Sweden Länssjukhuset - Medicin/kardiologi Kalmar, Sweden.
authors.forename: Hendrik
authors.initials: H
authors.lastname: Schreyer
authors.affiliation: Länssjukhuset - Medicin/kardiologi Kalmar, Sweden Länssjukhuset - Medicin/kardiologi Kalmar, Sweden.
authors.forename: Antonia
authors.initials: A
authors.lastname: Breyne
authors.affiliation: Linneaus University - Department of sport sciences Kalmar, Sweden Linneaus University - Department of sport sciences Kalmar, Sweden.
authors.forename: Patrick
authors.initials: P
authors.lastname: Bergman
mesh_terms: D000328:Adult; D001642:Bicycling / Q000502:physiology; D015415:Biomarkers / Q000097:blood*; D003402:Creatine Kinase / Q000097:blood; D003404:Creatinine / Q000097:blood; D004452:Echocardiography; D004562:Electrocardiography; D015444:Exercise / Q000502:physiology*; D005260:Female; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000503:physiopathology; D009211:Myoglobin / Q000097:blood; D020097:Natriuretic Peptide, Brain / Q000097:blood; D010807:Physical Endurance / Q000502:physiology; D012420:Running / Q000502:physiology; D011795:Surveys and Questionnaires; D013550:Swimming / Q000502:physiology; D020107:Troponin T / Q000097:blood
chemical_list: D015415:Biomarkers; D009211:Myoglobin; D020107:Troponin T; D020097:Natriuretic Peptide, Brain; D003404:Creatinine; D003402:Creatine Kinase