ISSN:
1600-0838
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
,
Sports Science
Notes:
The purpose of this study was to determine resting serum erythropoietin concentrations (S-[epo]) in endurance-trained sea-level residents 2 week after arrival at moderate altitude as well as after descent to sea level, and in endurance- and strength-trained residents at moderate altitude. S-[epo] concentrations were determined in 2 groups of non-altitude-acclimatized endurance-trained athletes normally living at sea level (group UAET, 20 men and 7 women, and group UACCS, 14 men and 6 women); and 2 groups of altitude-acclimatized athletes, all long-term residents at 1900 m above sea level (strength-trained judo athletes, group AST 10 men and 11 women, and endurance-trained athletes, group AET, 10 men and 10 women). Hematocrit (Hct) but not S-[ep] was significantly higher in pup AET than group AST Resting S-[epo] in group UAET was determined l,2,7, and 14 d after arrival from sea level to 1900 m above sea level. The Hct increased significantly from day 1 to day 7 in the women of group UAET. The Hct of the males in group UAET did not change significantly throughout the 2 weeks at altitude. The women in group UAET showed a significant decrease in S-[epo] from day 1 to day 7, The S-[epo] in the men of group UAET did not change from day 1 to day 2, but decreased significantly from day 2 to day 14. Resting S-[epo] in group UACCS was obtained before and at the end of the 2-week training period at high-altitude and after high-altitude training. Only the UACCS men had, in comparison with sea-level S-[epo], similar S-[epo] after 2 weeks of high-altitude training and significantly lower S-[epo] 2 d, but not 9 or 19 d after descent to sea level. These data indicate similar resting S-[epo] levels in acclimatized endurance- and strength-trained athletes, although the former group had higher Hct than the latter. In non-altitude-acclimatized endurance athletes, S-[epo] increased the ht days at altitude and thereafter decreased to similar S-[epo] as at sea level after 2 weeks of altitude training. After descent to sea level, S-[epo] decreased transiently but returned to the pre-altitude level after 9 d
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1600-0838.1992.tb00313.x
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