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The impact of high-intensity interval training on the cTnT response to acute exercise in sedentary obese young women.

Nie, J, Zhang, H, He, Y, Cao, W, Liu, Y, Kong, Z and George, KP (2018) The impact of high-intensity interval training on the cTnT response to acute exercise in sedentary obese young women. Scandinavian Journal of Medicine and Science in Sports. ISSN 1600-0838

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Nie et al HIEs_cTnT_SJMSS 2018.pdf - Accepted Version
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Abstract

AIMS: This study characterized (1) the cardiac troponin T (cTnT) response to three forms of acute high-intensity interval exercise (HIE), and (2) the impact of 12 weeks of HIE training on the cTnT response to acute exercise in sedentary obese young women. METHODS: Thirty-six sedentary women were randomized to traditional HIE training (repeated 4-min cycling at 90% V̇O2max interspersed with 3-min rest, 200 kJ/session), work-equivalent sprint interval exercise (SIE) training (repeated 1-min cycling at 120% V̇O2max interspersed with 1.5-min rest) or repeated sprint exercise (RSE) training (40 × 6-s all-out sprints interspersed with 9-s rest) group. cTnT was assessed using a high sensitivity assay before and immediately, 3 and 4 h after the 1st (PRE), 6th (EARLY), 20th (MID), and 44th (END) training session, respectively. RESULTS: cTnT was elevated (P < 0.05) after all forms of acute interval exercise at the PRE and EARLY assessment with cTnT response higher (P < 0.05) after HIE (307%) and SIE (318%) than RSE (142%) at the PRE assessment. All forms of acute interval exercise at MID and END had no effect on the cohort cTnT concentration post-exercise (all P > 0.05). CONCLUSION: For sedentary obese young women, both HIE and SIE, matched for total work, induced a similar elevation in cTnT after acute exercise with a smaller rise observed after RSE. By the 44th training session, almost no post-exercise cTnT elevation was observed in all three groups. Such information is relevant for clinicians as it could improve medical decision-making. This article is protected by copyright. All rights reserved.

Item Type: Article
Additional Information: This is the peer reviewed version of the following article: Nie, J. , Zhang, H. , He, Y. , Cao, W. , Liu, Y. , Kong, Z. and George, K. (2018), The impact of high‐intensity interval training on the cTnT response to acute exercise in sedentary obese young women. Scand J Med Sci Sports. Accepted Author Manuscript, which has been published in final form at http://dx.doi.org/10.1111/sms.13344. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Uncontrolled Keywords: 1106 Human Movement And Sports Science
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Sport & Exercise Sciences
Publisher: Wiley
Related URLs:
Date Deposited: 30 Nov 2018 11:02
Last Modified: 01 Dec 2018 16:58
DOI or Identification number: 10.1111/sms.13344
URI: http://researchonline.ljmu.ac.uk/id/eprint/9743

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