145092 20250830073300.0 448263 http://zaguan.unizar.es/record/145092/files/texto_completo.pdf Postprint info:eu-repo/date/embargoEnd/2025-08-29 2407528 http://zaguan.unizar.es/record/145092/files/texto_completo.jpg?subformat=icon icon Postprint info:eu-repo/date/embargoEnd/2025-08-29 28, 1 (2025), 3-8 J SCI MED SPORT JOURNAL OF SCIENCE AND MEDICINE IN SPORT 1440-2440 2025-02-14-14:11:25 ARTICLE oai:zaguan.unizar.es:145092 articulos driver (orcid)0000-0003-0455-6172 Sitko, Sebastian Universidad de Zaragoza Cirer-Sastre, Rafel (orcid)0000-0003-0721-2447 Mayolas-Pi, Carmen Universidad de Zaragoza Jiménez-Gaytán, Romario Rivelino Orocio, Ricardo Navarro García, Ricardo Lopez Corral, Pedro Gualberto Morales Reverter-Masia, Joaquín George, Keith Carranza-García, Luis Enrique info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 1006 245 Universidad de Zaragoza Dpto. Fisiatría y Enfermería Área Educación Física y Depor. The kinetics of cardiac troponin T release during and after 1- and 6-h maximal cycling trials doi 10.1016/j.jsams.2024.08.207 sideral 139928 2025 Objectives: In this study, the effects of short-duration high-intensity exercise and long-duration exercise on high-sensitivity cardiac troponin T (hs-cTnT) levels were compared. Methods: Twelve male amateur cyclists performed 1- and 6-h cycling trials. In both exercise trials, hs-cTnT was assessed at rest, immediately postexercise and at 1, 3, 6, 12, and 24 h postexercise. Additionally, hs-cTnT levels were assessed every hour during the 6-h trial. Results: Exercise resulted in an increase in hs-cTnT levels in all subjects. Circulating hs-cTnT levels increased in both exercise trials (p < 0.001), with higher peak values occurring after the 1-h trial compared with those of the 6-h trial (p = 0.023). The upper reference limit (URL) exceeded 83 % of the participants in the 1-h trial and 42 % of the participants in the 6-h trial. There was substantial individual variability in peak hs-cTnT in both trials. Values of hs-cTnT were greater after exercise than during exercise for the 6-h trial. For both exercise trials, the maximum postexercise hs-cTnT values correlated with the %HRMAX (r = 0.906 for the 1-h trial, r = 0.735 for the 6-h trial). For the 1-h trial, the maximum postexercise hs-cTnT values were observed at 3 h in all subjects. No significant difference in the hs-cTnT values was observed for the 6-h trial during the first 12 h postexercise. Conclusions: Our results demonstrated greater hs-cTnT levels in young male participants after a 1-h cycling trial than after a 6-h cycling trial, despite a substantially greater energy expenditure and total external work completed in the 6-h trial. Postexercise hs-cTnT values are associated with relative exercise intensity. Access copy available to the general public Unrestricted info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0003-2644-9386 Legaz-Arrese, Alejandro Universidad de Zaragoza ART-2025-139928 eng