| Aerobic fitness influences the response of maximal oxygen uptake and lactate threshold in acute hypobaric hypoxia. | |
| | |
MedLine Citation:
|
PMID: 7751080 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We studied 12 highly trained athletes, 6 male ice-hockey players and 6 cross-country skiers (2 females, 4 males). All of them participated in a maximal electrically braked bicycle ergometer test in a hypobaric chamber at the simulated altitude of 3000m (520 mmHg) and in normobaric conditions two days apart in random order. The maximal oxygen uptake was 57.4 +/- 7.1 (SD) ml/kg/min in normobaria (VO2maxnorm) and 46.6 +/- 4.9 (SD) ml/kg/min in hypobaric hypoxia (VO2maxhyp). The decrease in maximal oxygen uptake (delta VO2max) at the simulated altitude of 3000m correlated significantly (p < 0.05, r = 0.61) to the maximal oxygen uptake in normobaric conditions (VO2maxnorm). The lactate threshold was 43.5 +/- 6.4 (SD) ml/kg/min in normobaria (VO2LTnorm) and 36.5 +/- 4.2 (SD) ml/kg/min in hypobaric hypoxia (VO2LThyp). The decrement (delta VO2LT) of lactate threshold in hypoxia correlated significantly (p < 0.01, r = 0.68) with the lactate threshold in normobaric conditions (VOLTnorm). Thus we observed the largest reduction of both maximal oxygen uptake and lactate threshold during exercise at hypobaric hypoxia in the most fit athletes. |
| | |
Authors:
|
P Koistinen; T Takala; V Martikkala; J Leppäluoto |
Publication Detail:
|
Type: Clinical Trial; Journal Article; Randomized Controlled Trial |
Journal Detail:
|
Title: International journal of sports medicine Volume: 16 ISSN: 0172-4622 ISO Abbreviation: Int J Sports Med Publication Date: 1995 Feb |
Date Detail:
|
Created Date: 1995-06-22 Completed Date: 1995-06-22 Revised Date: 2004-11-17 |
Medline Journal Info:
|
Nlm Unique ID: 8008349 Medline TA: Int J Sports Med Country: GERMANY |
Other Details:
|
Languages: eng Pagination: 78-81 Citation Subset: IM; S |
Affiliation:
|
Health Centre Hospital of Oulu, Finland. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acute Disease Adult Aerobiosis Altitude Anaerobic Threshold / physiology* Anoxia / blood, physiopathology* Exercise Test Female Heart Rate / physiology Hockey / physiology Humans Lactates / blood* Male Oxygen / blood Oxygen Consumption / physiology* Physical Fitness / physiology* Respiration / physiology Skiing / physiology Ventilation-Perfusion Ratio |
| Chemical | |
Reg. No./Substance:
|
0/Lactates; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Stress hormones after prolonged physical training in normo- and hypobaric conditions in rats.
Next Document: Effect of pedal cadence on parameters of the hyperbolic power-time relationship.