Upper respiratory symptoms (URS) and salivary responses across a season in youth soccer players: A useful and non-invasive approach associated to URS susceptibility and occurrence in young athletes

Página do item simplificado
dc.contributor.authorLopes, Renata Fiedler
dc.contributor.authorMinuzzi, Luciele Guerra [UNESP]
dc.contributor.authorFigueiredo, Antonio Jose
dc.contributor.authorGoncalves, Carlos
dc.contributor.authorTessitore, Antonio
dc.contributor.authorCapranica, Laura
dc.contributor.authorTeixeira, Ana Maria
dc.contributor.authorRama, Luis
dc.contributor.institutionUniv Coimbra
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Rome Foro Italico
dc.date.accessioned2020-12-10T20:09:02Z
dc.date.available2020-12-10T20:09:02Z
dc.date.issued2020-08-04
dc.description.abstractThis study examined the effect of a competitive season on salivary responses [cortisol (sC), testosterone (sT), Testosterone/Cortisol ratio (sT/C), Immunoglobulin A (sIgA), sIgA secretion rate (srIgA), alpha-amylase (sAA)] and upper respiratory symptoms (URS) occurrence in three teams of male soccer players (Under-15, Under-17 and Under-19 yrs.). Training and competition volumes, salivary biomarkers and URS were determined monthly. No differences were found for monthly training volume between teams. Incidence of URS was higher for the U15 (44.9% of the total cases). Higher sT and srIgA were observed for the U19, lower sC were found for the U17 and sAA showed higher values for the U15 throughout the season. In the U15, significant difference (p= .023) was found for sIgA concentration with higher concentration values in January compared to December (-42.7%;p= .008) and the sT showed seasonal variation (p< .001) with the highest value in January significantly different from October (-40.2%;p= .035), November (-38.5%;p= 0.022) and December (-51.6%;p= .008). The U19 presented an increase in sC in March compared to February (-66.1%,p= .018), sT/C were higher in February compared to March (-58.1%;p= .022) and sAA increased in March compared to September (-20.5%;p= .037). Negative correlations, controlled for age group, were found between URS occurrence and srIgA (r = -0.170, p = .001), sAA (r = -0.179, p = .001) and sT (r = -0.107, p = .047). Monitoring salivary biomarkers provides information on mucosal immunity with impact in URS occurrence. Coaches could manipulate training loads to attenuate the physical stressors imposed on athletes, especially at demanding and stressful periods.en
dc.description.affiliationUniv Coimbra, Fac Sport Sci & Phys Educ, Res Ctr Sport & Phys Act, Coimbra, Portugal
dc.description.affiliationSao Paulo State Univ, Fac Sci & Technol, Dept Phys Educ, Exercise & Immunometab Res Grp, Presidente Prudente, SP, Brazil
dc.description.affiliationUniv Rome Foro Italico, Dept Movement Human & Hlth Sci, Rome, Italy
dc.description.affiliationUnespSao Paulo State Univ, Fac Sci & Technol, Dept Phys Educ, Exercise & Immunometab Res Grp, Presidente Prudente, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdCAPES: BEX:1417/13-4
dc.format.extent15
dc.identifierhttp://dx.doi.org/10.1371/journal.pone.0236669
dc.identifier.citationPlos One. San Francisco: Public Library Science, v. 15, n. 8, 15 p., 2020.
dc.identifier.doi10.1371/journal.pone.0236669
dc.identifier.issn1932-6203
dc.identifier.urihttp://hdl.handle.net/11449/197190
dc.identifier.wosWOS:000560009200030
dc.language.isoeng
dc.publisherPublic Library Science
dc.relation.ispartofPlos One
dc.sourceWeb of Science
dc.titleUpper respiratory symptoms (URS) and salivary responses across a season in youth soccer players: A useful and non-invasive approach associated to URS susceptibility and occurrence in young athletesen
dc.typeArtigo
dcterms.rightsHolderPublic Library Science
unesp.author.orcid0000-0002-9342-5563[2]

Arquivos

Coleções

Artigos - Estatística - FCT