Document Detail

Comparison of brachial artery vasoreactivity in elite power athletes and age-matched controls.
MedLine Citation:
PMID:  23359214     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To compare the size and vasoreactivity of the brachial artery of elite power athletes to age-matched controls. It was hypothesized brachial artery diameters of athletes would be larger, have less vasodilation in response to cuff occlusion, but more constriction after a cold pressor test than age-matched controls.
METHODS: Eight elite power athletes (age = 23 ± 2 years) and ten controls (age = 22 ± 1 yrs) were studied. High-resolution ultrasonography was used to assess brachial artery diameters at rest and following 5 minutes of forearm occlusion (Brachial Artery Flow Mediated Dilation = BAFMD) and a cold pressor test (CPT). Basic fitness measures included a handgrip test and 3-minute step test.
RESULTS: Brachial arteries of athletes were larger (Athletes 5.39 ± 1.51 vs.
CONTROLS: 3.73 ± 0.71 mm, p<0.05), had greater vasodilatory (BAFMD%: Athletes: 8.21 ± 1.78 vs.
CONTROLS: 5.69 ± 1.56%) and constrictor (CPT %: Athletes: -2.95 ± 1.07 vs.
CONTROLS: -1.20 ± 0.48%) responses, compared to controls. Vascular operating range (VOR = Peak dilation+Peak Constriction) was also greater in athletes (VOR: Athletes: 0.55 ± 0.15 vs.
CONTROLS: 0.25 ± 0.18 mm, p<0.05). Athletes had superior handgrip strength (Athletes: 55.92 ± 17.06 vs.
CONTROLS: 36.77 ± 17.06 kg, p<0.05) but similar heart rate responses at peak (Athletes: 123 ± 16 vs.
CONTROLS: 130 ± 25 bpm, p>0.05) and 1 minute recovery (Athletes: 88 ± 21 vs.
CONTROLS: 98 ± 26 bpm, p>0.05) following the step test.
CONCLUSION: Elite power athletes have larger brachial arteries, and greater vasoreactivity (greater vasodilatory and constrictor responses) than age-matched controls, contributing to a significantly greater VOR. These data extend the existence of an 'athlete's artery' as previously shown for elite endurance athletes to elite power athletes, and presents a hypothetical explanation for the functional significance of the 'power athlete's artery'.
Michael A Welsch; Paul Blalock; Daniel P Credeur; Tracie R Parish
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2013-01-24
Journal Detail:
Title:  PloS one     Volume:  8     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2013  
Date Detail:
Created Date:  2013-01-29     Completed Date:  2013-09-06     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e54718     Citation Subset:  IM    
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MeSH Terms
Brachial Artery / physiology*,  ultrasonography
Case-Control Studies
Young Adult

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