Influence of maturational status in the exercise-induced release of cardiac troponin T in healthy young swimmers

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Issue date
2021Author
Cirer-Sastre, Rafel
Legaz Arrese, Alejandro
Corbi Soler, Francesc
López Laval, Isaac
George, Keith
Suggested citation
Cirer-Sastre, Rafel;
Legaz Arrese, Alejandro;
Corbi Soler, Francesc;
López Laval, Isaac;
George, Keith;
Reverter Masià, Joaquín;
.
(2021)
.
Influence of maturational status in the exercise-induced release of cardiac troponin T in healthy young swimmers.
Journal of Science and Medicine in Sport, 2021, vol. 24, núm. 2, p. 116-121.
https://doi.org/10.1016/j.jsams.2020.06.019.
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Show full item recordAbstract
Objectives
To determine the influence of maturational status on the release of cardiac troponin T (cTnT) induced by a bout of 30 min, high-intensity, continuous exercise.
Design
Quasi-experimental, cross-sectional study.
Methods
Seventy male, young, well trained swimmers (age range 7–18 years, training experience 1–11 years) were classified by maturational stages: Tanner stage I (n = 14), II (n = 15), III (n = 15), IV (n = 13), and V (n = 13). Participants underwent a distance-trial of 30 min continuous swimming, and cTnT was measured before, immediately after and 3 h after exercise. Changes in cTnT over time were compared among groups, and associated with exercise load.
Results
Basal cTnT was higher in Tanner-V (3.8–8.1 ng/L) compared with I (1.5–5.5ng/L, p < 0.001), II (1.5–4.5ng/L, p < 0.001) and III (1.5–6.8ng/L, p = 0.003), and in IV (1.5–6.3 ng/L) compared with II (p = 0.036). Maximal elevations of cTnT from baseline were notable (p < 0.001) and comparable among maturational stages (p = 0.078). The upper reference limit for myocardial injury was exceeded in 35.7% of the participants, without differences among groups (p = 0.18). Baseline cTnT correlated with participant characteristics, and maximal cTnT elevations from baseline with exercise internal load (%HRpeak, rs = 0.34, p = 0.003; %HRmean, rs = 0.28, p = 0.02).
Conclusions
Maturational status influences positively absolute pre- and post-exercise cTnT but not its elevation after a bout of 30 min, high-intensity, continuous exercise.
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Journal of Science and Medicine in Sport, 2021, vol. 24, núm. 2, p. 116-121European research projects
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