Body Composition Changes During a 24-h Winter Mountain Running Race Under Extremely Cold Conditions

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dc.contributor.authorChlíbková, Danielacs
dc.contributor.authorŽákovská, Alenacs
dc.contributor.authorRosemann, Thomascs
dc.contributor.authorKnechtle, Beatcs
dc.contributor.authorBednář, Josefcs
dc.coverage.issue1cs
dc.coverage.volume10cs
dc.date.issued2019-05-14cs
dc.description.abstractBackground: To date, no study has focused on body composition characteristics and on parameters associated with skeletal muscle damage and renal function in runners participating in a 24-h winter race held under extremely cold environmental conditions (average temperature of -14.3 degrees C). Methods: Anthropometric characteristics, plasma urea (PU), plasma creatinine (Pcr), creatine kinase (CK), plasma volume (PV) and total body water (TBW) were assessed pre- and post-race in 20 finishers (14 men and 6 women). Results: In male runners, body mass (BM) (p = 0.003) and body fat (BF) (p = 0.001) decreased [-1.1 kg (-1.4%) and -1.1 kg (-13.4%), respectively]; skeletal muscle mass (SM) and TBW remained stable (p > 0.05). In female runners, BF decreased (p = 0.036) [-1.3 kg (-7.8%)] while BM, SM and TBW remained stable (p > 0.05). The change (Delta) in BM was not related to Delta BF; however, Delta BM was related to Delta SM [r = 0.58, p = 0.007] and Delta TBW (r = 0.59, p = 0.007). Delta SM correlated with Delta TBW (r = 0.51, p = 0.021). Moreover, Delta BF was negatively associated with Delta SM (r = -0.65, p = 0.002). PV (p < 0.001), CK (p < 0.001), Pcr (p = 0.004) and PU (p < 0.001) increased and creatinine clearance (CrCl) decreased (p = 0.002). The decrease in BM was negatively related to the increase in CK (r = -0.71, p < 0.001). Delta Pcr was positively related to Delta PU (r = 0.64, p = 0.002). The decrease in CrCl was negatively associated with the increase in both PU (r = -0.72, p < 0.001) and CK (r = -0.48, p = 0.032). Conclusion: The 24-h running race under extremely cold conditions led to a significant BF decrease, whereas SM and TBW remained stable in both males and females. Nevertheless, the increase in CK, Pcr and PU was related to the damage of SM with transient impaired renal function.en
dc.description.abstractBackground: To date, no study has focused on body composition characteristics and on parameters associated with skeletal muscle damage and renal function in runners participating in a 24-h winter race held under extremely cold environmental conditions (average temperature of -14.3 degrees C). Methods: Anthropometric characteristics, plasma urea (PU), plasma creatinine (Pcr), creatine kinase (CK), plasma volume (PV) and total body water (TBW) were assessed pre- and post-race in 20 finishers (14 men and 6 women). Results: In male runners, body mass (BM) (p = 0.003) and body fat (BF) (p = 0.001) decreased [-1.1 kg (-1.4%) and -1.1 kg (-13.4%), respectively]; skeletal muscle mass (SM) and TBW remained stable (p > 0.05). In female runners, BF decreased (p = 0.036) [-1.3 kg (-7.8%)] while BM, SM and TBW remained stable (p > 0.05). The change (Delta) in BM was not related to Delta BF; however, Delta BM was related to Delta SM [r = 0.58, p = 0.007] and Delta TBW (r = 0.59, p = 0.007). Delta SM correlated with Delta TBW (r = 0.51, p = 0.021). Moreover, Delta BF was negatively associated with Delta SM (r = -0.65, p = 0.002). PV (p < 0.001), CK (p < 0.001), Pcr (p = 0.004) and PU (p < 0.001) increased and creatinine clearance (CrCl) decreased (p = 0.002). The decrease in BM was negatively related to the increase in CK (r = -0.71, p < 0.001). Delta Pcr was positively related to Delta PU (r = 0.64, p = 0.002). The decrease in CrCl was negatively associated with the increase in both PU (r = -0.72, p < 0.001) and CK (r = -0.48, p = 0.032). Conclusion: The 24-h running race under extremely cold conditions led to a significant BF decrease, whereas SM and TBW remained stable in both males and females. Nevertheless, the increase in CK, Pcr and PU was related to the damage of SM with transient impaired renal function.en
dc.formattextcs
dc.format.extent1-13cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationFrontiers in Physiology. 2019, vol. 10, issue 1, p. 1-13.en
dc.identifier.doi10.3389/fphys.2019.00585cs
dc.identifier.issn1664-042Xcs
dc.identifier.orcid0000-0001-9592-7332cs
dc.identifier.other156921cs
dc.identifier.researcheridAAI-6467-2020cs
dc.identifier.scopus55129225600cs
dc.identifier.urihttp://hdl.handle.net/11012/193369
dc.language.isoencs
dc.publisherFrontierscs
dc.relation.ispartofFrontiers in Physiologycs
dc.relation.urihttps://www.frontiersin.org/article/10.3389/fphys.2019.00585/fullcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1664-042X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectextreme weather conditionsen
dc.subjectbody compositionen
dc.subjectwinteren
dc.subjectultra-runningen
dc.subject24 hen
dc.subjectextreme weather conditions
dc.subjectbody composition
dc.subjectwinter
dc.subjectultra-running
dc.subject24 h
dc.titleBody Composition Changes During a 24-h Winter Mountain Running Race Under Extremely Cold Conditionsen
dc.title.alternativeBody Composition Changes During a 24-h Winter Mountain Running Race Under Extremely Cold Conditionsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-156921en
sync.item.dbtypeVAVen
sync.item.insts2025.10.14 14:06:06en
sync.item.modts2025.10.14 10:15:07en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. ÚM-odbor statistiky a optimalizacecs
thesis.grantorVysoké učení technické v Brně. Centrum sportovních aktivit. Centrum sportovních aktivitcs
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