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Appl Physiol Nutr Metab. 2015 Sep;40(9):951-8. doi: 10.1139/apnm-2015-0055.

Individual variability in cardiac biomarker release after 30 min of high-intensity rowing in elite and amateur athletes.

Author information

1
a Section of Physical Education and Sports, University of Zaragoza, C/Domingo Miral s/n, 50009 Zaragoza, Spain.
2
b Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK.
3
c Service of Biochemistry, Lozano Blesa University Hospital, C/Domingo Miral s/n, 30009 Zaragoza, Spain.
4
d Department of Education, University Jaume I, Avenida Sos Baynat s/n, 12071 Castellón, Spain.
5
e Consorcio Hospitalario Provincial de Castellón, Avenida del Doctor Clarà 19, 12002 Castellón, Spain.
6
f Research Group Human Movement, University of Lleida, C/Partida Caparrella s/n, 25192 Lleida, Spain.

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.

KEYWORDS:

NT-proBNP; amateur athletes; athletic status; athlètes amateurs; athlètes d’élite; aviron; cTnI; elite athletes; exercice physique; exercise; rowing; statut des athlètes

PMID:
26307519
DOI:
10.1139/apnm-2015-0055
[Indexed for MEDLINE]

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