title: Individual variability in cardiac biomarker release after 30 min of high-intensity rowing in elite and amateur athletes.
abstract: This study had two objectives: (i) to examine individual variation in the pattern of cardiac troponin I (cTnI) and N-terminal pro-brain natriuretic peptide (NT-proBNP) release in response to high-intensity rowing exercise, and (ii) to establish whether individual heterogeneity in biomarker appearance was influenced by athletic status (elite vs. amateur). We examined cTnI and NT-proBNP in 18 elite and 14 amateur rowers before and 5 min, 1, 3, 6, 12, and 24 h after a 30-min maximal rowing test. Compared with pre-exercise levels, peak postexercise cTnI (pre: 0.014 ± 0.030 μg·L(-1); peak post: 0.058 ± 0.091 μg·L(-1); p = 0.000) and NT-proBNP (pre: 15 ± 11 ng·L(-1); peak post: 31 ± 19 ng·L(-1); p = 0.000) were elevated. Substantial individual heterogeneity in peak and time-course data was noted for cTnI. Peak cTnI exceeded the upper reference limit (URL) in 9 elite and 3 amateur rowers. No rower exceeded the URL for NT-proBNP. Elite rowers had higher baseline (0.019 ± 0.038 vs. 0.008 ± 0.015 μg·L(-1); p = 0.003) and peak postexercise cTnI (0.080 ± 0.115 vs. 0.030 ± 0.029 μg·L(-1); p = 0.022) than amateur rowers, but the change with exercise was similar between groups. There were no significant differences in baseline and peak postexercise NT-proBNP between groups. In summary, marked individuality in the cTnI response to a short but high-intensity rowing bout was observed. Athletic status did not seem to affect the change in cardiac biomarkers in response to high-intensity exercise.
authors: a Section of Physical Education and Sports, University of Zaragoza, C/Domingo Miral s/n, 50009 Zaragoza, Spain.
authors: Alejandro
authors: A
authors: Legaz-Arrese
authors: a Section of Physical Education and Sports, University of Zaragoza, C/Domingo Miral s/n, 50009 Zaragoza, Spain.
authors: Isaac
authors: I
authors: López-Laval
authors: b Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK.
authors: Keith
authors: K
authors: George
authors: c Service of Biochemistry, Lozano Blesa University Hospital, C/Domingo Miral s/n, 30009 Zaragoza, Spain.
authors: Juan José
authors: JJ
authors: Puente-Lanzarote
authors: d Department of Education, University Jaume I, Avenida Sos Baynat s/n, 12071 Castellón, Spain.
authors: Diego
authors: D
authors: Moliner-Urdiales
authors: e Consorcio Hospitalario Provincial de Castellón, Avenida del Doctor Clarà 19, 12002 Castellón, Spain.
authors: Vicente Javier
authors: VJ
authors: Ayala-Tajuelo
authors: a Section of Physical Education and Sports, University of Zaragoza, C/Domingo Miral s/n, 50009 Zaragoza, Spain.
authors: Carmen
authors: C
authors: Mayolas-Pi
authors: f Research Group Human Movement, University of Lleida, C/Partida Caparrella s/n, 25192 Lleida, Spain.
authors: Joaquín
authors: J
authors: Reverter-Masià
mesh_terms: D056352:Athletes; D015415:Biomarkers / Q000097:blood; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D007700:Kinetics; D008297:Male; D009119:Muscle Contraction; D018482:Muscle, Skeletal / Q000502:physiology*; D009206:Myocardium / Q000378:metabolism*; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D019210:Troponin I / Q000097:blood*
chemical_list: D015415:Biomarkers; D010446:Peptide Fragments; D019210:Troponin I; C109794:pro-brain natriuretic peptide (1-76); D020097:Natriuretic Peptide, Brain
keywords: NT-proBNP; amateur athletes; athletic status; athlètes amateurs; athlètes d’élite; aviron; cTnI; elite athletes; exercice physique; exercise; rowing; statut des athlètes