Replicate Measurements of Haemoglobin Mass during a Single Day are Feasible and Precise

Näf, Nicole; Steiner, Thomas; Wehrlin, Jon Peter (2015). Replicate Measurements of Haemoglobin Mass during a Single Day are Feasible and Precise International Journal of Sports Medicine, 36(5), pp. 19-23. Georg Thieme Verlag 10.1055/s-0034-1398583

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Duplicate haemoglobin mass (Hbmass) measurements are recommended before and after altitude training sojourns to identify individual adaptations in athletes with a high level of certainty. Duplicate measurements reduce typical error (TE) and disclose measurement outliers, but are usually made on separate days, which is not a practical protocol for routine services in elite sport settings. The aim of this study was therefore to investigate whether it is safe (carboxyhaemoglobin<10%) to measure Hbmass twice on the same day and to compare TE with measurements made on separate days. 18 healthy men completed 3 different procedures to measure Hbmass twice a day with the carbon monoxide rebreathing method: A (Hbmass measured twice within 6 h), B (dito A, combined with 1 h of hyperoxic training between the tests), C (dito B, within 2 h). First Hbmass measurements of the 3 test days served as procedure D. Carboxyhaemoglobin did not exceed 10% in any procedure. TE and confidence limits for procedures A, B, C and D were 1.4% (1.0–2.1%), 1.1% (0.8–1.7%), 1.3% (1.0–2.0%) and 1.5% (1.2–2.1%), respectively. Duplicate measurements of Hbmass on the same day are feasible and show TE similar to triplicate measurements on separate days.

Item Type:	Journal Article (Original Article)
Division/Institute:	Swiss Federal Institute of Sports Magglingen SFISM > EHSM - Leistungssport > Sportphysiologie Ausdauer
Name:	Näf, Nicole; Steiner, Thomas and Wehrlin, Jon Peter
ISSN:	0172-4622 (Print) 1439-3964 (Online)
Publisher:	Georg Thieme Verlag
Language:	English
Submitter:	Service Account
Date Deposited:	15 Feb 2021 14:18
Last Modified:	14 Oct 2021 02:18
Publisher DOI:	10.1055/s-0034-1398583
PubMed ID:	25806590
Uncontrolled Keywords:	CO-rebreathing method Altitude training Athletes Haemoglobin mass Reproducibility Technical error
ARBOR DOI:	10.24451/arbor.10912
URI:	https://arbor.bfh.ch/id/eprint/10912