Acute effect of intermittent and continuous aerobic exercise on release of cardiac troponin T in sedentary men
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
BACKGROUND: Studies have shown that acute exercise can increase serum concentrations of cardiac biomarkers, including cardiac troponin T (cTnT). We investigated the acute effects of intermittent (IE) and continuous (CE) exercise at the same cardiac workload on myocardial necrosis biomarkers in sedentary men.
METHODS: Eleven sedentary healthy men aged 22.3±1.9years completed the study. The subjects were divided into two groups and performed, in random order, IE (intensity alternating between 50% (2min) and 80% (1min) HRreserve) or CE (60% HRreserve). The study was designed as a single-blinded randomised crossover trial performed on two distinct experimental days separated by a 1-week washout period. Each session consisted of 40min of aerobic exercise, either IE or CE, on a treadmill. Blood samples were taken before (PRE), immediately after (POST) and 1h after (POST-1) each exercise session.
RESULTS: hs-cTnT significantly increased immediately after exercise in both protocols and remained elevated at POST-1 (P<0.05). There was no significant difference between POST and POST-1 values(P>0.05). Neither CE nor IE caused any significant change in CK-MB (P>0.05). The results also showed that HR and RPP increased significantly following both exercise protocols (P=0.001).
CONCLUSIONS: In summary, both CE and IE results in increased serum concentrations of hs-cTnT in sedentary men. However, this increase does not seem to be caused by the irreversible death of cardiomyocytes. CE resulted in a greater hs-cTnT concentration than IE.
Originalsprog | Engelsk |
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Tidsskrift | International Journal of Cardiology |
Vol/bind | 236 |
Sider (fra-til) | 493-497 |
Antal sider | 5 |
ISSN | 0167-5273 |
DOI | |
Status | Udgivet - 2017 |
Bibliografisk note
CURIS 2017 NEXS 032
- Det Natur- og Biovidenskabelige Fakultet
Forskningsområder
ID: 172129472