Effects of exercise on vasodilatory capacity in endurance- and resistance-trained men |
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Authors: | Email author" target="_blank">Tracy?BaynardEmail author Wayne?C?Miller Bo?Fernhall |
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Institution: | (1) Exercise Science Department, Syracuse University, Rm. 201, 820 Comstock Avenue, NY 13244, Syracuse, USA,;(2) School of Public Health and Health Services, Exercise Science Programs, The George Washington University Medical Center, 817 23rd Street N.W, DC 20052, Washington, USA, |
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Abstract: | To determine vasodilatory responsiveness we measured forearm blood flow (FBF) following reactive hyperemia (RH), prior to
and following a bout of maximal aerobic exercise in endurance- (n=14) and resistance-trained men (n=10). Both groups were similar in height, body mass, and percentage body fat. Using strain-gauge plethysmography, resting
FBF was higher in the resistance-trained group 4.82 (0.84) vs 3.33 (1.17) ml min−1 100 ml−1 of tissue; P<0.05]. However, the resistance-trained group had a 17%–29% lower pre-exercise FBF response to RH for the first 45 s (P<0.05). Following the maximal exercise bout there were no group differences in FBF. Post-exercise FBF was higher compared
to pre-exercise values in both the endurance- (P<0.001) and resistance- (P<0.01) trained groups. Endurance-trained men appear to have a greater peak vasodilatory capacity compared to resistance-trained
men, and acute maximal exercise increased the vasodilatory capacity in both groups. Acute exercise also equalized the peak
vasodilatory response between the endurance- and resistance-trained groups, suggesting the potential for flow-mediated vasodilatation
was similar for both groups.
Electronic Publication |
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Keywords: | Reactive hyperemia Vasodilatation Endurance exercise Resistance exercise |
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