The impact of short duration, high intensity exercise on cardiac troponin release
Contribuinte(s) |
Abertay University. School of Social & Health Sciences |
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Data(s) |
05/02/2015
05/02/2015
23/12/2014
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Resumo |
The aim of this study was to assess the appearance of cardiac troponins (cTnI and/or cTnT) after a short bout (30 s) of ‘all-out’ intense exercise and to determine the stability of any exercise-related cTnI release in response to repeated bouts of high intensity exercise separated by 7 days recovery. Eighteen apparently healthy, physically active, male university students completed two all-out 30 s cycle sprint, separated by 7 days. cTnI, blood lactate and catecholamine concentrations were measured before, immediately after and 24 h after each bout. Cycle performance, heart rate and blood pressure responses to exercise were also recorded. Cycle performance was modestly elevated in the second trial [6·5% increase in peak power output (PPO)]; there was no difference in the cardiovascular, lactate or catecholamine response to the two cycle trials. cTnI was not significantly elevated from baseline through recovery (Trial 1: 0·06 ± 0·04 ng ml−1, 0·05 ± 0·04 ng ml−1, 0·03 ± 0·02 ng ml−1; Trial 2: 0·02 ± 0·04 ng ml−1, 0·04 ± 0·03 ng ml−1, 0·05 ± 0·06 ng ml−1) in either trial. Very small within subject changes were not significantly correlated between the two trials (r = 0·06; P>0·05). Subsequently, short duration, high intensity exercise does not elicit a clinically relevant response in cTnI and any small alterations likely reflect the underlying biological variability of cTnI measurement within the participants. |
Identificador |
George, K.P., et al. 2014. The impact of short duration, high intensity exercise on cardiac troponin release. Clinical Physiology and Functional Imaging. 36(4): pp.281-285. doi: 10.1111/cpf.12225 1475-097X 1475-0961 |
Idioma(s) |
en |
Publicador |
John Wiley & Sons |
Relação |
Clinical Physiology and Functional Imaging, 36(4) |
Direitos |
Published version © Scandinavian Society of Clinical Physiology and Nuclear Medicine. Published by John Wiley & Sons, available from www.onlinelibrary.wiley.com |
Palavras-Chave | #Biological variability #Cardiac biomarkers #Cycle #Fat free mass #Total body mass |
Tipo |
Journal Article published peer-reviewed n/a |