Hemoglobin mass and peak oxygen uptake in untrained and trained residents of moderate altitude

被引:36
|
作者
Böning, D
Rojas, J
Serrato, M
Ulloa, C
Coy, L
Mora, M
Gomez, J
Hütler, M
机构
[1] Free Univ Berlin, Inst Sports Med, D-1000 Berlin, Germany
[2] Univ Nacl Colombia, Ctr Fisiol Ejercicio, Bogota, Colombia
[3] Ctr Serv Biomed, Bogota, Colombia
关键词
erythropoietin; exercise; hypoxia; iron; transferrin receptor; doping;
D O I
10.1055/s-2001-18530
中图分类号
G8 [体育];
学科分类号
04 ; 0403 ;
摘要
Blood composition, hemoglobin mass (CO rebreathing method) and (V) over dot O(2)peak were measured in 15 untrained (UT-Bogota) and 14 trained males (TR-Bogota) living at 2600 m of altitude, and in 14 untrained lowlanders (UT-Berlin). [Hb] amounted to 15.3 + 0.2(SE) g/dl in UT-Berlin, 17.4 + 0.2 g/dl in UT-Bogota and 16.0 + 0.2 g/dl in TR-Bogota. Hb mass was significantly higher in UT-Bogota (13.2 + 0.4 g/kg, P < 0.01) and in TR-Bogota (14.7 + 0.5 g/kg, P < 0.001) than in UT-Berlin (11.7 + 0.2 g/kg). In TR-Bogota also plasma volume was expanded. Erythropoietin concentrations in UT-Bogota and TR-Bogota were not significantly increased. There was a positive correlation between blood volume and (V) over dot O(2)peak for the pooled values of all subjects, if the oxygen uptake of UT-Berlin was corrected for an ascent to 2600 m. For the Hb mass - (V) over dot O(2)peak relation two groups are indicated pointing to two types of altitude acclimatization with different Hb mass increases but similar distribution of aerobic performance capacity. We suggest that different genetic properties in a population of mixed ethnic origin might play a role.
引用
收藏
页码:572 / 578
页数:7
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