Haile, D. W. et al. (2019) Effects of EPO on blood parameters and running performance in Kenyan athletes. Medicine and Science in Sports and Exercise, 51(2), pp. 299-307. (doi: 10.1249/MSS.0000000000001777) (PMID:30188362)
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Abstract
Introduction: Recombinant human erythropoietin (rHuEpo) administration enhances oxygen carrying capacity and performance at sea level. It remains unknown whether similar effects would be observed in chronic altitude-adapted endurance runners. The aim of this study was to assess the effects of rHuEpo on hematological and performance parameters in chronic altitude-adapted endurance runners as compared to sea level athletes. Methods: Twenty well-trained Kenyan endurance runners (KEN) living and training at approximately 2150 m received rHuEpo injections of 50 IU·kg−1 body mass every 2 d for 4 wk and responses compared with another cohort (SCO) that underwent an identical protocol at sea level. Blood samples were obtained at baseline, during rHuEpo administration and 4 wk after the final injection. A maximal oxygen uptake (V˙O2max) test and 3000-m time trial was performed before, immediately after and 4 wk after the final rHuEpo injection. Results: Hematocrit (HCT) and hemoglobin concentration (HGB) were higher in KEN compared to SCO before rHuEpo but similar at the end of administration. Before rHuEpo administration, KEN had higher V˙O2max and faster time trial performance compared to SCO. After rHuEpo administration, there was a similar increase in V˙O2max and time trial performance in both cohorts; most effects of rHuEpo were maintained 4 wk after the final rHuEpo injection in both cohorts. Conclusions: Four weeks of rHuEpo increased the HGB and HCT of Kenyan endurance runners to a lesser extent than in SCO (~17% vs ~10%, respectively) and these alterations were associated with similar improvements in running performance immediately after the rHuEpo administration (~5%) and 4 wk after rHuEpo (~3%).
Item Type: | Articles |
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Additional Information: | This study was part of a larger research project supported by grant from the World Anti-doping Agency (08C19YP). A partial grant was also provided by MEPI and the postgraduate office of Addis Ababa University, Ethiopia. |
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Durussel, Mr Jerome and McClure, Dr John |
Authors: | Haile, D. W., Durussel, J., Mekonen, W., Ongaro, N., Anjila, E., Mooses, M., Daskalaki, E., Mooses, K., McClure, J. D., Sutehall, S., and Pitsiladis, Y. P. |
College/School: | College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health |
Journal Name: | Medicine and Science in Sports and Exercise |
Publisher: | Lippincott, Williams and Wilkins |
ISSN: | 0195-9131 |
ISSN (Online): | 1530-0315 |
Published Online: | 01 February 2019 |
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