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The impact of exercise duration and intensity on the release of cardiac biomarkers.

Authors :
Serrano-Ostáriz E
Terreros-Blanco JL
Legaz-Arrese A
George K
Shave R
Bocos-Terraz P
Izquierdo-Álvarez S
Bancalero JL
Echavarri JM
Quilez J
Aragonés MT
Carranza-García LE
Source :
Scandinavian journal of medicine & science in sports [Scand J Med Sci Sports] 2011 Apr; Vol. 21 (2), pp. 244-9.
Publication Year :
2011

Abstract

Numerous studies have observed cardiac biomarker release with prolonged exercise. Despite this, we are unsure as to the constituent aspects of any given exercise bout that may be important in promoting cardiac biomarker release. This study examined the influence of exercise duration and intensity on the appearance of cardiac biomarkers. Twenty-one subjects ran for 45, 90 and 180 min at 85% and 95% of their individual anaerobic threshold on six different days randomized. Cardiac troponin I (cTnI) and N-terminal pro-brain natiuretic peptide (NT-proBNP) were assayed from blood samples collected before, 30 min and 3 h post-exercise. NT-proBNP was elevated after all exercise trials (range before: 21-32; range post: 38-67 ng/L). Peak post-exercise concentrations of NT-proBNP were associated with exercise duration (P=0.049), but not exercise intensity (P=0.451). cTnI was elevated after all exercise trials (range before: 0.007-0.011; range post: 0.008-0.021 μg/L). Peak post-exercise concentrations of cTnI were associated with exercise duration (P=0.003) and intensity (P=0.037). Data suggest that while both cTnI and NT-proBNP increased after all exercise trials, the mediating effect of duration influenced both NT-proBNP and cTnI while intensity influenced only cTnI.<br /> (© 2009 John Wiley & Sons A/S.)

Details

Language :
English
ISSN :
1600-0838
Volume :
21
Issue :
2
Database :
MEDLINE
Journal :
Scandinavian journal of medicine & science in sports
Publication Type :
Academic Journal
Accession number :
19919634
Full Text :
https://doi.org/10.1111/j.1600-0838.2009.01042.x