Greater Performance Impairment of Black Runners than White Runners when Runners in Hypoxia

This study aimed to compare the response of performance-matched black and white runners during maximal and sub-maximal running in normoxic and hypoxic conditions. 14 well-trained runners (8 black, 6 white) performed 2 incremental maximal exercise tests and 2 fatigue resistance tests at 21% O sub(2)...

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Bibliographic Details
Published in:International journal of sports medicine 2014-09, Vol.35 (10), p.809-816
Main Authors: Santos-Concejero, J, Tucker, R, Myburgh, K H, Essen-Gustavsson, B, Kohn, T A
Format: Article
Language:English
Online Access:Get full text
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Summary:This study aimed to compare the response of performance-matched black and white runners during maximal and sub-maximal running in normoxic and hypoxic conditions. 14 well-trained runners (8 black, 6 white) performed 2 incremental maximal exercise tests and 2 fatigue resistance tests at 21% O sub(2) (normoxia) or 14% O sub(2) (hypoxia). Respiratory parameters, heart rate (HR), lactate concentration ([La-]) as well as arterial saturation (SpO sub(2)) were measured. Enzyme activities and myosin heavy chain content (MHC) were also measured. White runners reached a significantly greater peak treadmill speed and a higher HR sub(max) than black runners in hypoxia (p
ISSN:0172-4622
DOI:10.1055/s-0034-1367012