Document Detail

Effect of intensity of dynamic exercise on pupil diameter in humans.
MedLine Citation:
PMID:  20558970     Owner:  NLM     Status:  MEDLINE    
To test the hypothesis that pupil diameter, which is innervated by the autonomic nervous system, increases with exercise intensity, we determined pupil diameter during incremental exercise in eight healthy subjects. The subjects performed an incremental ergometer exercise in a room illuminated at 90-100 lx. We continuously measured pupil diameter and heart rate before, during, and after the exercise. Pupil diameter increased significantly with exercise intensity (except at the lowest intensity), peaking at 113+/-3% (mean+/-SE) of the diameter during the resting baseline period. The diameter did not differ significantly between the resting baseline and recovery periods. These findings suggest that exercise enlarges pupil diameter and that the magnitude of dilation is related to exercise intensity.
Naoyuki Hayashi; Nami Someya; Yoshiyuki Fukuba
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of physiological anthropology     Volume:  29     ISSN:  1880-6805     ISO Abbreviation:  J Physiol Anthropol     Publication Date:  2010  
Date Detail:
Created Date:  2010-06-18     Completed Date:  2010-09-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101269653     Medline TA:  J Physiol Anthropol     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  119-22     Citation Subset:  IM    
Institute of Health Science, Kyushu University, Kasuga, Fukuoka, Japan.
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MeSH Terms
Analysis of Variance
Blood Pressure / physiology
Exercise / physiology*
Heart Rate / physiology
Iris / anatomy & histology*,  physiology*
Pupil / physiology*

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