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The cTnT response to acute exercise at the onset of an endurance training program: evidence of exercise preconditioning?
Zhang,Haifeng1,2; Nie,Jinlei3; Kong,Zhaowei4; Cao,Wenling1; Zhu,Xiangui1; Zheng,Ziwei1; George,Keith5
Source PublicationEuropean Journal of Applied Physiology

Purpose: Exercise induces a cardioprotective effect referred to as “preconditioning”. Whether the preconditioning impacts upon the cardiac troponin T (cTnT) response to subsequent exercise bouts is unclear. This study investigated the effects of an initial exercise bout, a second exercise bout 48 h later, as well as subsequent exercise every 48 h for 4 days or a single identical exercise bout after 8 days of inactivity gap on cTnT response to acute exercise.

Methods: Twenty-eight sedentary overweight young women were randomly assigned to either six bouts of exercise each separated by 48 h or three bouts of exercise with 48 h between the first two bouts and 8 days between the second and third bouts. All exercise bouts were identical (60% V˙ O , 200 kJ) and the total testing period (10 days) was the same for both groups. cTnT was assessed before and after the 1st, 2nd, and final exercise bouts. Results: cTnT increased (129%, P < 0.05) after the first bout of exercise in both groups (peak post-exercise cTnT, median [range], ng l : 3.43[< 3.00−27.26]) with no between-group differences in the response. The second exercise bout had no significant (P > 0.05) effect on post-exercise cTnT (< 3.00[< 3.00−21.96]). The final exercise bout resulted in an increase (190%, P < 0.05) in cTnT (4.35[< 3.00−13.05]) in both groups.

Conclusions: A single bout exercise resulted in a temporary blunting of cTnT response to acute exercise 48 h later. The effect of exercise preconditioning was not preserved, regardless of whether followed by repeated exercise every 48 h or a cessation of exercise for 8 days.

KeywordCardiac Biomarker Cardiac Troponin t Endurance Exercise Exercise Preconditioning
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Indexed BySCI
WOS Research AreaPhysiology ; Sport Sciences
WOS SubjectPhysiology ; Sport Sciences
WOS IDWOS:000461560200003
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Education
Corresponding AuthorNie,Jinlei
Affiliation1.Physical Education College, Hebei Normal University, Shijiazhuang, China
2.Provincial Key Lab of Measurement and Evaluation in Human Movement and Bio-Information, Shijiazhuang, China
3.School of Physical Education and Sports, Macao Polytechnic Institute, Rua de Luis Gonzaga Gomes, Macao, China
4.Faculty of Education, University of Macau, Macao, China
5.Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
Recommended Citation
GB/T 7714
Zhang,Haifeng,Nie,Jinlei,Kong,Zhaowei,et al. The cTnT response to acute exercise at the onset of an endurance training program: evidence of exercise preconditioning?[J]. European Journal of Applied Physiology,2019,119(4):847-855.
APA Zhang,Haifeng.,Nie,Jinlei.,Kong,Zhaowei.,Cao,Wenling.,Zhu,Xiangui.,...&George,Keith.(2019).The cTnT response to acute exercise at the onset of an endurance training program: evidence of exercise preconditioning?.European Journal of Applied Physiology,119(4),847-855.
MLA Zhang,Haifeng,et al."The cTnT response to acute exercise at the onset of an endurance training program: evidence of exercise preconditioning?".European Journal of Applied Physiology 119.4(2019):847-855.
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