Validation of a blood marker for plasma volume in endurance athletes during a live-high train-low altitude training camp

Journal article


Lobigs, Louisa M., Garvican-Lewis, Laura A., Vuong, Victor L., Tee, Nicolin, Gore, Christopher J., Peeling, Peter, Dawson, Brian and Schumacher, Yorck O.. (2018). Validation of a blood marker for plasma volume in endurance athletes during a live-high train-low altitude training camp. Drug Testing and Analysis. 10(7), pp. 1176 - 1183. https://doi.org/10.1002/dta.2370
AuthorsLobigs, Louisa M., Garvican-Lewis, Laura A., Vuong, Victor L., Tee, Nicolin, Gore, Christopher J., Peeling, Peter, Dawson, Brian and Schumacher, Yorck O.
Abstract

Altitude is a confounding factor within the Athlete Biological Passport (ABP) due, in part, to the plasma volume (PV) response to hypoxia. Here, a newly developed PV blood test is applied to assess the possible efficacy of reducing the influence of PV on the volumetric ABP markers; haemoglobin concentration ([Hb]) and the OFF‐score. Endurance athletes (n=34) completed a 21‐night simulated live‐high train‐low (LHTL) protocol (14 h.d‐1 at 3000 m). Bloods were collected twice pre‐altitude; at days 3, 8, and 15 at altitude; and 1, 7, 21, and 42 days post‐altitude. A full blood count was performed on the whole blood sample. Serum was analysed for transferrin, albumin, calcium, creatinine, total protein, and low‐density lipoprotein. The PV blood test (consisting of the serum markers, [Hb] and platelets) was applied to the ABP adaptive model and new reference predictions were calculated for [Hb] and the OFF‐score, thereby reducing the PV variance component. The PV correction refined the ABP reference predictions. The number of atypical passport findings (ATPFs) for [Hb] was reduced from 7 of 5 subjects to 6 of 3 subjects. The OFF‐score ATPFs increased with the PV correction (from 9 to 13, 99% specificity); most likely the result of more specific reference limit predictions combined with the altitude‐induced increase in red cell production. Importantly, all abnormal biomarker values were identified by a low confidence value. Although the multifaceted, individual physiological response to altitude confounded some results, the PV model appears capable of reducing the impact of PV fluctuations on [Hb].

KeywordsAthlete Biological Passport; Bayesian inference; biological variation; blood doping; intravascular volumes
Year2018
JournalDrug Testing and Analysis
Journal citation10 (7), pp. 1176 - 1183
PublisherJohn Wiley & Sons
ISSN1942-7603
Digital Object Identifier (DOI)https://doi.org/10.1002/dta.2370
Scopus EID2-s2.0-85044717603
Open accessOpen access
Page range1176 - 1183
Research GroupMary MacKillop Institute for Health Research
Author's accepted manuscript
Publisher's version
Additional information

This is the peer reviewed version of the following article: Lobigs, LM, Garvican‐Lewis, LA, Vuong, VL, et al. Validation of a blood marker for plasma volume in endurance athletes during a live‐high train‐low altitude training camp. Drug Test Anal. 2018; 10: 1176– 1183, which has been published in final form at https://onlinelibrary.wiley.com/doi/full/10.1002/dta.2370 . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

Place of publicationUnited Kingdom
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