Document Detail

Visual system effects of exercise on Mauna Kea at 2,200 and 4,200 meters altitude.
MedLine Citation:
PMID:  9121665     Owner:  NLM     Status:  MEDLINE    
Field exercise studies were performed at two altitudes (2,200 and 4,200 m) in 2 successive years using different sets of young male volunteers. Visual function indices were measured both at sea level and during a strenuous exercise regime at altitude. Volunteers were grouped in the first study by initial rest period (2 days vs. no rest) and in the second by diet (supplemental carbohydrates vs. Meals Ready to Eat rations only). Overall results showed no effect according to grouping, a decrease in average visual acuity at the higher altitude overall, and a decrease in electroretinographic (ERG) photopic flicker responses at moderate altitude. It is concluded that heavy exercise at these altitudes may not have operationally significant effects on ground troops in night vision or target recognition, although the change in ERG parameters does indicate a shift in retinal cone physiology that may have subtler effects.
E T Schmeisser; D L Gagliano; J Santiago-Marini
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Military medicine     Volume:  162     ISSN:  0026-4075     ISO Abbreviation:  Mil Med     Publication Date:  1997 Mar 
Date Detail:
Created Date:  1997-04-24     Completed Date:  1997-04-24     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  2984771R     Medline TA:  Mil Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  186-9     Citation Subset:  IM; S    
Department of Ophthalmology, University of Kentucky, Lexington, USA.
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MeSH Terms
Adaptation, Physiological
Exercise / physiology*
Military Personnel*
United States
Vision, Ocular*
Visual Acuity

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

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