Influence of maturational status in the exercise-induced release of cardiac troponin T in healthy young swimmers
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, train...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10459.1/72827 |
| Acceso en línea: | https://doi.org/10.1016/j.jsams.2020.06.019 http://hdl.handle.net/10459.1/72827 |
| Access Level: | acceso abierto |
| Palabra clave: | Adolescent Biomarkers Child Exercise Puberty |
| Sumario: | 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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