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Off- to in-season b...
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Pettersson, Stefan,1972Gothenburg University,Göteborgs universitet,Centrum för hälsa och prestationsutveckling,Center for Health and Performance,Center for Health and Performance, Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden; Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden,Institutionen för kost- och idrottsvetenskap,Department of Food and Nutrition, and Sport Science
(författare)
Off- to in-season body composition adaptations in elite male and female endurance and power event athletics competitors: an observational study
- Artikel/kapitelEngelska2024
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Springer Nature,2024
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LIBRIS-ID:oai:DiVA.org:ltu-105289
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https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-105289URI
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https://doi.org/10.1186/s13102-024-00877-7DOI
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https://gup.ub.gu.se/publication/337034URI
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https://gup.ub.gu.se/publication/337041URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Validerad;2024;Nivå 2;2024-06-27 (joosat);Full text license: CC BY
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Background: Monitoring elite athletes’ body composition (BC) is vital for health and optimizing performance in sports emphasizing leanness, such as athletics. This study aims to investigate and compare sex- and event-specific off-to in-season BC changes in endurance and power event athletics competitors.Methods: Elite male and female endurance athletes (> 800 m runners; n = 21) and power event athletes (sprinters, jumpers; n = 32) underwent dual-energy X-ray absorptiometry (DXA) scans for whole and regional lean mass (LM), fat mass (FM), bone mineral content (BMC), and density (BMD) during off-season (September-October) and in-season (April-May). Linear mixed models tested between-group off-season differences in BC, within-group off-season to in-season changes, and between-group differences in change. To assess meaningful or least significant changes (LSC) in BC, DXA precision errors were determined from two consecutive total body scans in a subsample of athletes (n = 30).Results: Male athletes (n = 26) gained significantly (p < 0.05) more body mass (BM; mean difference 1.5 [95% confidence interval (CI):0.5–2.4] kg), LM (843 [95% CI:-253:1459] g), and trunk LM (756 [-502:1156] g) than female athletes (n = 27). The proportion of changes in athlete’s BC exceeding the LSC threshold for LM and trunk LM were 70% and 65% in males, and 48% and 26% in females. Significant (p < 0.05) within-group off-season to in-season increases in LM were found for male endurance and power athletes, and female power athletes. All groups significantly increased BMD (p < 0.05). Only male and female power athletes had significant in- to-off-season increases in BMC. 80% of all athletes who had a meaningful increase in BMC belonged to the power event group. No significant within- or between group change in FM was observed.Conclusions: The present study found that male athletes gained more BM, LM and trunk LM than females. Within-group increases in regional and whole-body LM and BMC were predominantly found among power event competitors. Incorporating individual meaningful changes alongside traditional statistics provided additional insights into sex and event-group differences. Future research on elite athletic event groups should include DXA measurements closer to major outdoor-season competitions, coupled with site-specific measures (ultrasound, MRI) for better detection of subtle changes in LM and FM.
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Kalén, AntonLuleå tekniska universitet,Digitala tjänster och system,Swedish Olympic Committee, Sofiatornet, Olympiastadion, Stockholm, Sweden;(Swepub:ltu)antkal
(författare)
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Gustafsson, Mikael,1991Gothenburg University,Göteborgs universitet,Centrum för hälsa och prestationsutveckling,Center for Health and Performance,Center for Health and Performance, Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden,Institutionen för kost- och idrottsvetenskap,Department of Food and Nutrition, and Sport Science(Swepub:gu)xgmikj
(författare)
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Grau, StefanGothenburg University,Göteborgs universitet,Centrum för hälsa och prestationsutveckling,Institutionen för kost- och idrottsvetenskap,Extern,Center for Health and Performance,Department of Food and Nutrition, and Sport Science,External(Swepub:gu)xgraus
(författare)
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Caspers, Andreas,1987Gothenburg University,Göteborgs universitet,Centrum för hälsa och prestationsutveckling,Center for Health and Performance,Center for Health and Performance, Department of Food and Nutrition, and Sport Science, University of Gothenburg, Gothenburg, Sweden,Institutionen för kost- och idrottsvetenskap,Department of Food and Nutrition, and Sport Science(Swepub:gu)xluanl
(författare)
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Göteborgs universitetCentrum för hälsa och prestationsutveckling
(creator_code:org_t)
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Ingår i:BMC Sports Science, Medicine and Rehabilitation: Springer Nature162052-1847
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