Negative Energy Balance Does Not Alter Fat-Free Mass During the Yukon Arctic Ultra—The Longest and the Coldest Ultramarathon

Autor: Adriane Schalt, Michelle M. Johannsen, Jimin Kim, Richard Chen, Carl J. Murphy, Melynda S. Coker, Hanns-Christian Gunga, Robert H. Coker, Mathias Steinach
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Frontiers in Physiology, Vol 9 (2018)
Druh dokumentu: article
ISSN: 1664-042X
DOI: 10.3389/fphys.2018.01761
Popis: Purpose: The objective of this study was to determine alterations in caloric balance, body composition, metabolites, and cytokines in athletes participating in the Yukon Arctic Ultra.Methods: Ten participants traveling on foot in the 2017 692-km event were recruited for the study. Measurements and samples were obtained at pre-event, 278 km (C1), 384 km (C2), and post-event. Body composition measurements were obtained using bioelectrical impedance analysis. Accelerometer devices were utilized to provide an estimation of caloric expenditure and dietary recalls provided assessments of caloric intake. Blood serum samples were collected, processed, and analyzed using enzyme-linked immunosorbent assays or nuclear magnetic resonance. Results were analyzed using linear mixed model, presented as means ± SD, and considered significant at p
Databáze: Directory of Open Access Journals