Document Detail

Assessment of autonomic function in high level athletes by pupillometry.
MedLine Citation:
PMID:  12559205     Owner:  NLM     Status:  MEDLINE    
Spectral analysis of heart rate variability has become a noninvasive standard method for assessment of autonomic nervous system activity in athletes. The effect of exercise training on autonomic regulation of pupillary light reflex is not known. The purpose of this study was to evaluate pupil autonomic function in athletes. We studied 46 highly trained athletes practicing gymnastics, swimming, long-distance running, soccer, and 51 healthy control subjects, using a portable infrared pupillometry. Five left pupil light response curves were recorded for each subject; the 485 pupillogram records were processed by a computer system. The following pupillometric parameters calculated were significantly higher (P<0.05) in runners than in controls: reflex amplitude (2.1 mm; 95% CI, 1.9-2.3 vs. 1.8 mm; 95% CI, 1.7-1.9), mean percent reflex amplitude of initial diameter (34%; 95% CI, 32-37 vs. 30%, 95% CI, 28-31) and mean time at which pupil redilated 75% of reflex amplitude (2.15 s; 95% CI, 1.99-2.31 vs. 1.86 s; 95% CI, 1.78-1.93). Sex, age, height, weight, body mass index and years of sports practice had no significant influence in the evaluated parameters. The results were consistent with an increased parasympathetic activity and a reduced sympathetic activity of pupillary light reflex in endurance-trained runners, supporting the hypothesis of a generalized "dysautonomy" associated with this type of training.
João A Capão Filipe; F Falcão-Reis; J Castro-Correia; Henrique Barros
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Autonomic neuroscience : basic & clinical     Volume:  104     ISSN:  1566-0702     ISO Abbreviation:  Auton Neurosci     Publication Date:  2003 Feb 
Date Detail:
Created Date:  2003-01-31     Completed Date:  2003-04-10     Revised Date:  2009-08-12    
Medline Journal Info:
Nlm Unique ID:  100909359     Medline TA:  Auton Neurosci     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  66-72     Citation Subset:  IM    
Pupillometry Unit, Department of Ophthalmology, University of Porto School of Medicine, S. João Hospital, Porto 4200-319, Portugal.
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MeSH Terms
Analysis of Variance
Autonomic Nervous System / physiology*
Confidence Intervals
Reflex, Pupillary / physiology*
Sports / physiology*

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