The impact of short duration, high intensity exercise on cardiac troponin release

Keith P. George, Marie Clare Grant, Bruce Davies, Julien S. Baker

Research output: Contribution to journalArticle

Abstract

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.
Original languageEnglish
Pages (from-to)281-285
Number of pages5
JournalClinical Physiology and Functional Imaging
Volume36
Issue number4
Early online date23 Dec 2014
DOIs
Publication statusPublished - Jul 2016

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Troponin
Exercise
Catecholamines
Lactic Acid
Heart Rate
Students
Blood Pressure

Keywords

  • biological variability, cardiac biomarkers, cycle, fat free mass, total body mass

Cite this

George, Keith P. ; Grant, Marie Clare ; Davies, Bruce ; Baker, Julien S. / The impact of short duration, high intensity exercise on cardiac troponin release. In: Clinical Physiology and Functional Imaging. 2016 ; Vol. 36, No. 4. pp. 281-285.
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The impact of short duration, high intensity exercise on cardiac troponin release. / George, Keith P.; Grant, Marie Clare; Davies, Bruce; Baker, Julien S.

In: Clinical Physiology and Functional Imaging, Vol. 36, No. 4, 07.2016, p. 281-285.

Research output: Contribution to journalArticle

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