Opin vísindi

Fatness but Not Fitness Relative to the Fat-Free Mass Is Related to C-Reactive Protein in 18 Year-Old Adolescents

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dc.contributor Háskóli Íslands
dc.contributor University of Iceland
dc.contributor.author Hinriksdóttir, Gunnhildur
dc.contributor.author Tryggvadóttir, Ágústa
dc.contributor.author Ólafsdóttir, Anna Sigríður
dc.contributor.author Arngrímsson, Sigurbjörn Árni
dc.date.accessioned 2017-02-23T15:26:30Z
dc.date.available 2017-02-23T15:26:30Z
dc.date.issued 2015-06-15
dc.identifier.citation Hinriksdóttir G, Tryggvadóttir Á, Ólafsdóttir AS, Arngrímsson SÁ (2015) Fatness but Not Fitness Relative to the Fat-Free Mass Is Related to C-Reactive Protein in 18 Year-Old Adolescents. PLoS ONE 10(6): e0130597. doi:10.1371/journal.pone.0130597
dc.identifier.issn 1932-6203
dc.identifier.uri https://hdl.handle.net/20.500.11815/195
dc.description.abstract Introduction The interaction between fatness, fitness, and C-reactive protein (CRP) in adolescents is not well characterized but may be important to prevent low grade inflammation. The purpose of this study was to assess the relationship between adiposity, different expressions of fitness, and CRP in late adolescence using direct measures of fitness and fatness. Methods Anthropometric measurements were taken on 245 eighteen-year-old participants (116 girls). Fasting CRP, glucose, and insulin were measured and homeostatic model assess- ment (HOMA) calculated. Body composition was estimated via dual energy X-ray absorpti- ometry. Fitness was assessed with maximal oxygen uptake (VO2max) during a treadmill test and also expressed relative to the fat-free mass (VO2maxFFM). Results Prevalence of overweight/obesity based on body mass index (BMI) was 20.7% and 25.6% among girls and boys, respectively (p = 0.407), but 42.5% and 58.1% when based on body fat percentage (%fat, p = 0.015). Higher proportion of boys (81.3%) than girls (54.5%) were highly fit (p<0.001), but the percentage of girls with high levels of CRP was greater (12.1% vs 6.2%, p = 0.028). Adiposity, indicated with BMI, waist circumference, fat mass, android fat mass (aFM), or %fat, was positively associated with CRP independent of VO2max (r = 0.13-0.18, p<0.05) and VO2maxFFM (r = 0.24-0.32, p<0.001). VO2max, was negatively associated with CRP independent only of BMI and waist circumference (r = -0.21, p = 0.001), but not %fat, fat mass or aFM (r = -0.08 to -0.12, p>0.05). VO2maxFFM was unrelated to CRP with (r = -0.07 to -0.11, p>0.05) or without (r = -0.10, p = 0.142) adjustment for adiposity. Additional adjustment for HOMA did not change any of the relationships, although the coefficients were attenuated. Conclusions Fatness has a greater association with CRP than fitness in late adolescence. However, VO2maxFFM, which is truly independent of adiposity, is unrelated to CRP, indicating that the effects of fitness might be mediated via the fatness component embedded in fitness expressed relative to body mass.
dc.description.sponsorship Ministry of Education Sports Fund, University of Iceland Research Fund
dc.format.extent 1-14
dc.language.iso en
dc.publisher Public Library of Science (PLoS)
dc.relation.ispartofseries Plos One;10(6)
dc.rights info:eu-repo/semantics/openAccess
dc.subject Offita
dc.subject Heilsufar
dc.subject Ungt fólk
dc.subject Unglingar
dc.title Fatness but Not Fitness Relative to the Fat-Free Mass Is Related to C-Reactive Protein in 18 Year-Old Adolescents
dc.type info:eu-repo/semantics/article
dcterms.license CC BY
dc.description.version Peer Reviewed
dc.identifier.journal Plos One
dc.identifier.doi 10.1371/journal.pone.0130597
dc.contributor.department Íþrótta-, tómstunda- og þroskaþjálfadeild (HÍ)
dc.contributor.department Faculty of Sport, Leisure Studies and Social Education (UI)
dc.contributor.school Menntavísindasvið (HÍ)
dc.contributor.school School of Education (UI)

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