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Impact of high-intensity interval training and moderate-intensity continuous training on resting and postexercise cardiac troponin T concentration
Nie,Jinlei1; Zhang,Haifeng2; Kong,Zhaowei3; George,Keith4; Little,Jonathan P.5; Tong,Tomas K.6; Li,Feifei2; Shi,Qingde1
2018-03-01
Source PublicationExperimental Physiology
ISSN1469445X 09580670
Volume103Issue:3Pages:370-380
AbstractNew Findings: What is the central question of this study? Does exercise training impact resting and postexercise cardiac troponin T (cTnT) concentration? What is the main finding and its importance? This randomized controlled intervention study demonstrated that 12 weeks of either high-intensity interval training or moderate-intensity continuous training largely abolished the exercise-induced elevation in cTnT when exercise was performed at the same absolute intensity. There was no impact of training on resting cTnT or postexercise appearance of cTnT when exercise was performed at the same relative intensity. These findings provide new information that might help clinicians with decision-making in relationship to basal and postexercise values of cTnT in individuals with different training status. Abstract: We evaluated the influence of 12 weeks of high-intensity interval training [HIIT; repeated 4 min cycling at 90% of maximal oxygen uptake (Vmax) interspersed with 3 min rest, 200–300 kJ per session, 3 or 4 days each week] and work-equivalent moderate-intensity continuous training (MICT; continuous cycling at 60% (Vmax) on resting cardiac troponin T (cTnT) and the appearance of exercise-induced cTnT. Forty-eight sedentary obese young women were randomly assigned to HIIT, MICT or a control group. The (Vmax) and body composition were measured before and after training. At baseline, cTnT was assessed using a high-sensitivity assay at rest and immediately, 2 and 4 h after 45 min cycling at 60% (Vmax). After a 12 week 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 (Vmax) and lower fat mass in both HIIT and MICT groups (all P < 0.05). Before training, cTnT was significantly elevated in all three groups (by 35–118%, all P < 0.05) with acute exercise. After training, both resting and postexercise cTnT concentrations (same relative intensity) were similar to pretraining values. In contrast, postexercise 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 postexercise elevation of cTnT concentration when exercise was performed at the same absolute intensity. There was, however, no impact of training on resting cTnT or postexercise appearance of cTnT for exercise performed at the same relative intensity.
Keywordcardiac biomarker high-intensity interval training moderate-intensity continuous training
DOI10.1113/EP086767
URLView the original
Language英语
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorNie,Jinlei
Affiliation1.School of Physical Education and Sports,Macao Polytechnic Institute,,Macao
2.College of Physical Education,Hebei Normal University,,Hebei,China
3.Faculty of Education,University of Macau,,Macao
4.Research Institute for Sport and Exercise Sciences,Liverpool John Moores University,,Liverpool,United Kingdom
5.School of Health and Exercise Science,University of British Columbia,,Kelowna,Canada
6.Dr Stephen Hui Research Centre for Physical Recreation and Wellness,Department of Physical Education,Hong Kong Baptist University,,Hong Kong
Recommended Citation
GB/T 7714
Nie,Jinlei,Zhang,Haifeng,Kong,Zhaowei,et al. Impact of high-intensity interval training and moderate-intensity continuous training on resting and postexercise cardiac troponin T concentration[J]. Experimental Physiology,2018,103(3):370-380.
APA Nie,Jinlei.,Zhang,Haifeng.,Kong,Zhaowei.,George,Keith.,Little,Jonathan P..,...&Shi,Qingde.(2018).Impact of high-intensity interval training and moderate-intensity continuous training on resting and postexercise cardiac troponin T concentration.Experimental Physiology,103(3),370-380.
MLA Nie,Jinlei,et al."Impact of high-intensity interval training and moderate-intensity continuous training on resting and postexercise cardiac troponin T concentration".Experimental Physiology 103.3(2018):370-380.
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