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The association between training load indices and upper respiratory tract infections (URTIs) in elite soccer players

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dc.contributor.author Tiernan, Caoimhe
dc.contributor.author Comyns, Thomas M.
dc.contributor.author Lyons, Mark
dc.contributor.author Nevill, Alan M.
dc.contributor.author Warrington, Giles D.
dc.date.accessioned 2021-06-23T13:12:03Z
dc.date.available 2021-06-23T13:12:03Z
dc.date.issued 2021
dc.identifier.uri http://hdl.handle.net/10344/10271
dc.description peer-reviewed en_US
dc.description.abstract This study aimed to investigate the association between training load indices and Upper Respiratory Tract Infection (URTI) across different lag periods in elite soccer players. Internal training load was collected from 15 elite soccer players over one full season (40 weeks). Acute, chronic, Acute:Chronic Workload Ratio (ACWR), Exponentially Weighted Moving Averages (EWMA) ACWR, 2, 3 and 4-week cumulative load, training strain and training monotony were calculated on a rolling weekly basis. Players completed a daily illness log, documenting any signs and symptoms, to help determine an URTI. Multilevel logistic regression was used to analyze the associations between training load indices and URTIs across different lag periods (1 to 7-days). The results found a significant association between 2-week cumulative load and an increased likelihood of a player contracting an URTI 3 days later (Odds Ratio, 95% Confidence Interval: OR = 2.07, 95% CI = 0.026-1.431). Additionally, a significant association was found between 3-week cumulative load and a players’ increased risk of contracting an URTI 4 days later (OR = 1.66, 95% CI = 0.013–1.006). These results indicate that accumulated periods of high training load (2- and 3-week) associated with an increased risk of a player contracting an URTI, which may lead to performance decrements, missed training sessions or even competitions. en_US
dc.language.iso eng en_US
dc.publisher SAGE Publications en_US
dc.relation.ispartofseries International Journal of Sports Science & Coaching;
dc.subject acute en_US
dc.subject chronic workload ratio en_US
dc.subject illness en_US
dc.subject immune function en_US
dc.subject rating of perceived exertion en_US
dc.title The association between training load indices and upper respiratory tract infections (URTIs) in elite soccer players en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1177/17479541211020479
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US


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