Document Detail

Potential benefits of maximal exercise just prior to return from weightlessness.
MedLine Citation:
PMID:  3606518     Owner:  NLM     Status:  MEDLINE    
The purpose of this study was to determine whether performance of a single maximal bout of exercise during weightlessness within hours of return to earth would enhance recovery of aerobic fitness and physical work capacities under a 1G environment. Ten healthy men (36-51 yr) underwent maximal supine exercise followed by upright maximal exercise before and after a 10-d bedrest period in the 6 degrees headdown position. A graded maximal supine cycle ergometer test was performed before and at the end of bedrest to simulate exercise during weightlessness. Following 3 h of resumption of the upright posture from the supine exercise test, a second maximal exercise test was performed on a treadmill to measure work capacity under conditions of 1G. Compared to before bedrest, peak VO2 decreased (p less than 0.05) by 8.7% and peak HR increased (p less than 0.05) by 5.6% in the supine cycle test at the end of bedrest. However, there were no significant changes in peak VO2 and peak HR in the upright treadmill test following bedrest. These data, based on a simulation, suggest that one bout of maximal leg exercise prior to return from 10 d of weightlessness may be adequate to restore preflight aerobic fitness and physical work capacity.
V A Convertino
Related Documents :
8778558 - Assessment of the aerosport teem 100 portable metabolic measurement system.
7180908 - Contrasting alterations in pulmonary gas exchange during acetate and bicarbonate hemodi...
6536508 - Measurement of oxygen uptake: a method for use during nitrous oxide in oxygen anaesthesia.
8497018 - The effect of high- and low-intensity warm-up on the physiological responses to a stand...
12423178 - Serum chemistry and hematological adaptations to 6 weeks of moderate to intense resista...
7263378 - Beat-by-beat stroke volume assessment by pulsed doppler in upright and supine exercise.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Aviation, space, and environmental medicine     Volume:  58     ISSN:  0095-6562     ISO Abbreviation:  Aviat Space Environ Med     Publication Date:  1987 Jun 
Date Detail:
Created Date:  1987-07-28     Completed Date:  1987-07-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7501714     Medline TA:  Aviat Space Environ Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  568-72     Citation Subset:  IM; S    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Exercise Test
Heart Rate
Middle Aged
Oxygen Consumption
Physical Exertion*
Physical Fitness

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

Previous Document:  The thyroid and hypoxic moderation of systemic hypertension in the spontaneously hypertensive rat.
Next Document:  Saliva cortisol: a good indicator for acceleration stress.