Document Detail


Physiological characteristics of the best Eritrean runners-exceptional running economy.
MedLine Citation:
PMID:  17111007     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Despite their young age, limited training history, and lack of running tradition compared with other East African endurance athletes (e.g., Kenyans and Ethiopians), male endurance runners from Eritrea have recently attained important running successes. The purposes of our study were (i) to document the main physical and physiological characteristics of elite black Eritrean distance runners (n = 7; age: 22 +/- 3 years) and (ii) to compare them with those of their elite white Spanish counterparts. For this second purpose we selected a control group of elite Spanish runners (n = 9; 24 +/- 2 years), owing to the traditionally high success of Spanish athletes in long-distance running compared with other white runners, especially in cross-country competitions. The subjects' main anthropometric characteristics were determined, together with their maximum oxygen uptake (VO2 max) and VO2 (mL.kg(-1).min(-1)), blood lactate, and ammonia concentrations while running at 17, 19, or 21 km.h(-1). The body mass index (18.9 +/- 1.5 kg.m(-2)) and maximal calf circumference (30.9 +/- 1.5 cm) was lower in Eritreans than in Spaniards (20.5 +/- 1.7 kg.m(-2) and 33.9 +/- 2.0 cm, respectively) (p < 0.05 and p < 0.01, respectively) and their lower leg (shank) length was longer (44.1 +/- 3.0 cm vs. 40.6 +/- 2.7 cm, respectively) (p < 0.05). VO2 max did not differ significantly between Eritreans and Spaniards (73.8 +/- 5.6 mL.kg(-1).min(-1) vs. 77.8 +/- 5.7 mL.kg(-1).min(-1), respectively), whereas the VO2 cost of running was lower (p < 0.01) in the former (e.g., 65.9 +/- 6.8 mL.kg(-1).min(-1) vs. 74.8 +/- 5.0 mL.kg(-1).min(-1) when running at 21 km.h(-1)). Our data suggest that the excellent running economy of Eritreans is associated, at least partly, with anthropometric variables. Comparison of their submaximal running cost with other published data suggests that superior running economy, rather than enhanced aerobic capacity, may be the common denominator in the success of black endurance runners of East African origin.
Authors:
Alejandro Lucia; Jonathan Esteve-Lanao; Jesús Oliván; Félix Gómez-Gallego; Alejandro F San Juan; Catalina Santiago; Margarita Pérez; Carolina Chamorro-Viña; Carl Foster
Related Documents :
17140677 - Oxytocin levels in the posterior pituitary and in the heart are modified by voluntary w...
1642727 - Difference of physiological responses to swimming and running.
18210127 - Effects of wheel running on photoperiodic responses of djungarian hamsters (phodopus su...
2274917 - Physical exercise enhances plasma levels of extrinsic pathway inhibitor (epi).
10233127 - Splanchnic glucagon kinetics in exercising alloxan-diabetic dogs.
20702897 - The effects of physical activity in the anticipatory postural adjustments in elderly pe...
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Applied physiology, nutrition, and metabolism = Physiologie appliquée, nutrition et métabolisme     Volume:  31     ISSN:  1715-5312     ISO Abbreviation:  -     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-11-19     Completed Date:  2007-03-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101264333     Medline TA:  Appl Physiol Nutr Metab     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  530-40     Citation Subset:  IM    
Affiliation:
Universidad Europea de Madrid, Madrid 28670, Spain.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
African Continental Ancestry Group
Ammonia / blood
Anthropometry
Body Mass Index
Eritrea
Genotype
Humans
Lactic Acid / blood
Male
Oxygen Consumption / genetics
Physical Endurance / genetics
Running / physiology*
Spain
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid; 7664-41-7/Ammonia

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Addition of glutamine to essential amino acids and carbohydrate does not enhance anabolism in young ...
Next Document:  Verification phase as a useful tool in the determination of the maximal oxygen uptake of distance ru...