期刊
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
卷 42, 期 4, 页码 791-797出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1249/MSS.0b013e3181badd67
关键词
OXYGEN TRANSPORT; ALTITUDE; PLASMA VOLUME; ERYTHROPOIETIN; (V) over dotO(2max); ADAPTATION TO NORMOXIA
资金
- German Federal Institute of Sports Sciences [VF070121/05-06]
PROMMER, N., S. THOMA, L. QUECKE, T. GUTEKUNST, C. VOLZKE, N. WACHSMUTH, A. M. NIESS, and W. SCHMIDT. Total Hemoglobin Mass and Blood Volume of Elite Kenyan Runners. Med. Sci. Sports Exerc., Vol. 42, No. 4, pp. 791-797, 2010. Several East Africans are among the most successful runners worldwide. The physiological reasons underlying this superiority are, however, not yet known. Purpose: To evaluate the total hemoglobin mass (tHb-mass) and blood volume (BV) of Kenyan runners and their adaptation to near sea level. Methods: tHb-mass, BV, and (V) over dotO(2max) were determined in 10 male Kenyan runners (10-km best time = 28:29 +/- 00:27 min) residing at an altitude of 2090 m over the course of a 6-wk training camp at sea level. Their values were compared with those of elite German runners (10-km best time = 30:39 +/- 00:24 min). Results: Kenyans are characterized by significantly lower body mass (Kenyans = 57.2 +/- 7.0 kg; Germans = 66.5 +/- 6.3 kg) and body mass index (Kenyans = 18.5 +/- 0.9; Germans = 20.4 +/- 0.9). Relative tHb-mass (Kenyans = 14.2 +/- 1.0 g.kg(-1); Germans = 14.0 +/- 0.7 g.kg(-1)) and BV (Kenyans = 101.9 +/- 4.5 mL.kg(-1); Germans = 99.6 +/- 5.8 mL.kg(-1)) were similar in both groups but were decreased in Kenyans during the stay at near sea level (absolute tHb-mass from 813 +/- 90 g.mL(-1) to 767 +/- 90 g, P < 0.001; BV from 5828 +/- 703 g.mL(-1) to 5513 +/- 708 mL, P<0.01). Relative (V) over dotO(2max) was similar in both groups (Kenyans 71.5 +/- 5.0 mL.kg(-1).min(-1); Germans 70.7 +/- 3.7 mL.kg(-1).min(-1)). Conclusion: The oxygen transport of the blood cannot explain the superior endurance performance of Kenyan runners. Most measured parameters are in the same range as those of elite German runners, and tHb-mass even deteriorates after an adaptation to near sea level.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据