High-sensitivity cardiac troponin T release after a single bout of high-intensity interval exercise in experienced marathon runners

Feifei Li, Longyan Yi, Huiping Yan, Xuejing Wang, Jinlei Nie, Haifeng Zhang, Frank Hoo Kin Fu, Yanpeng Zang, Shuo Yang, Yifan Lu

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Objective The purpose of this study was to investigate the effects of a single bout of high-intensity interval exercise (HIIE) on high-sensitivity cardiac troponin T (hs-cTnT) release and to explore the potential influencing factors. Methods Twenty-one experienced marathon runners completed HIIE on treadmill. Each bout of HIIE included a hard run (15.8 ± 1.3 km·h−1) at 90% vVO2max for 2 min followed by an easy run (8.8 ± 0.7 km·h−1) at 50% vVO2max for 2 min performed 23 times within 92 min. Heart rate (HR) was recorded every 2 min during HIIE. The hs-cTnT level was measured before (pre), immediately after (0 h), and at 4 and 24 h after exercise. Results The hs-cTnT level was elevated at 0 h, peaked at 4 h, and had not returned to the baseline value at 24 h after exercise. The response of hs-cTnT at 4 h was positively related to exercise HR. Subjects with a greater increase in hs-cTnT level had a higher exercise HR under fixed exercise intensity. Conclusion HIIE at 90% vVO2max interspersed with 50% vVO2max for recovery can elicit hs-cTnT elevation. HR is a good predictor of exercise-induced cardiac troponin (cTn) release under fixed exercise intensity. Further study should consider to correct for HR when constructing impact factors contributing to exercise-induced cTn release.

Original languageEnglish
Pages (from-to)49-54
Number of pages6
JournalJournal of Exercise Science and Fitness
Volume15
Issue number2
DOIs
Publication statusPublished - Dec 2017

Keywords

  • Exercise intensity
  • Exercise-induced cardiac troponin release
  • Heart rate
  • High-intensity interval exercise
  • High-sensitivity cardiac troponin T
  • Marathon

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