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Changes in Serum Free Amino Acids and Muscle Fatigue Experienced during a Half-Ironman Triathlon
dc.contributor.author | Areces, F. | |
dc.contributor.author | González-Millán, C. | |
dc.contributor.author | Salinero, J.J. | |
dc.contributor.author | Abián-Vicen, J. | |
dc.contributor.author | Lara, B | |
dc.contributor.author | Gallo-Salazar, C. | |
dc.contributor.author | Ruiz-Vicente, D. | |
dc.contributor.author | Del Coso, J. | |
dc.date.accessioned | 2017-09-08T08:48:07Z | |
dc.date.available | 2017-09-08T08:48:07Z | |
dc.date.issued | 2015-09-15 | |
dc.identifier.citation | Areces F, González-Millán C, Salinero JJ, Abian-Vicen J, Lara B, Gallo-Salazar C, et al. (2015) Changes in Serum Free Amino Acids and Muscle Fatigue Experienced during a Half-Ironman Triathlon. PLoS ONE 10(9 | es |
dc.identifier.uri | http://hdl.handle.net/20.500.12020/395 | |
dc.description.abstract | The aim of this study was to investigate the relationship between changes in serum free amino acids, muscle fatigue and exercise-induced muscle damage during a half-ironman triathlon. Twenty-six experienced triathletes (age = 37.0 ± 6.8 yr; experience = 7.4 ± 3.0 yr) competed in a real half-ironman triathlon in which sector times and total race time were measured by means of chip timing. Before and after the race, a countermovement jump and a maximal isometric force test were performed, and blood samples were withdrawn to measure serum free amino acids concentrations, and serum creatine kinase levels as a blood marker of muscle damage. Total race time was 320 ± 37 min and jump height (-16.3 ± 15.2%, P < 0.001) and isometric force (-14.9 ± 9.8%; P = 0.007) were significantly reduced after the race in all participants. After the race, the serum concentration of creatine kinase increased by 368 ± 187% (P < 0.001). In contrast, the serum concentrations of essential (-27.1 ± 13.0%; P < 0.001) and non-essential amino acids (-24.4 ± 13.1%; P < 0.001) were significantly reduced after the race. The tryptophan/BCAA ratio increased by 42.7 ± 12.7% after the race. Pre-to-post changes in serum free amino acids did not correlate with muscle performance variables or post-race creatine kinase concentration. In summary, during a half-ironman triathlon, serum amino acids concentrations were reduced by > 20%. However, neither the changes in serum free amino acids nor the tryptophan/BCAA ratio were related muscle fatigue or muscle damage during the race. | es |
dc.language.iso | en | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.title | Changes in Serum Free Amino Acids and Muscle Fatigue Experienced during a Half-Ironman Triathlon | es |
dc.type | article | es |
dc.identifier.doi | 10.1371/journal.pone.0138376 | |
dc.issue.number | 9 | es |
dc.journal.title | PLOS ONE | es |
dc.page.initial | 1 | es |
dc.page.final | 11 | es |
dc.rights.accessRights | openAccess | es |
dc.subject.area | Ciencias de la Actividad Física y del Deporte | es |
dc.subject.unesco | 3201.99 Otras | |
dc.volume.number | 10 | es |