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Nie, J, Zhang, H, Kong, Z, George, KP, Little, JP, Tong, TK, Li, F and Shi, Q (2017) Impact of high-intensity interval training and moderate-intensity continuous training on resting and post-exercise cardiac troponin T concentration. Experimental Physiology. ISSN 1469-445X
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Impact of high-intensity interval training and moderate-intensity continuous training on resting and post-exercise cardiac troponin T concentration..pdf - Accepted Version Download (1MB) | Preview |
Abstract
We evaluated the influence of 12 weeks high-intensity interval training (HIIT, repeated 4-min cycling at 90% V̇O2max interspersed with 3-min rest, 200-300 KJ/session, 3-4 days wk-1 ) and work-equivalent moderate-intensity continuous training (MICT, continuous cycling at 60% V̇O2max ) on resting cardiac troponin T (cTnT) as well as exercise-induced cTnT appearance. Forty-eight sedentary obese young women were randomly assigned to HIIT, MICT, or a control group. V̇O2max and body composition were measured before and after training. At baseline, cTnT was assessed using a high-sensitivity assay at rest and immediately, 2 h and 4 h after 45-min cycling at 60% V̇O2max . After a 12-wk training period, cTnT was assessed before and after 45-min cycling at the same relative and absolute intensities as before training. Training led to higher V̇O2max and lower fat mass in both HIIT and MICT (all P < 0.05). Before training, cTnT was significantly elevated in all three groups (35 to 118%, all P < 0.05) with acute exercise. After training both resting and post-exercise cTnT levels (same relative intensity) were similar to pre-training values. In contrast, post-exercise cTnT (same absolute intensity, which represented a smaller exercise stimulus) was not elevated from rest in both HIIT and MICT groups. In conclusion, 12 weeks of either HIIT or MICT largely abolished the elevation of post-exercise cTnT concentration when exercise was performed at the same absolute intensity. There was, however, no impact of training on resting cTnT or post-exercise cTnT appearance for exercise performed at the same relative intensity. This article is protected by copyright. All rights reserved.
| Item Type: | Article |
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| Additional Information: | This is the accepted version of the following article: Nie, J., Zhang, H., Kong, Z., George, K., Little, J. P., Tong, T. K., Li, F. and Shi, Q. (), Impact of high-intensity interval training and moderate-intensity continuous training on resting and post-exercise cardiac troponin T concentration. Exp Physiol. Accepted Author Manuscript. doi:10.1113/EP086767, which has been published in final form at http://dx.doi.org/10.1113/EP086767 |
| Uncontrolled Keywords: | 0606 Physiology, 1116 Medical Physiology, 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: | 10 Jan 2018 12:12 |
| Last Modified: | 04 Sep 2021 03:26 |
| DOI or ID number: | 10.1113/EP086767 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/7798 |
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