Exercise training produces nonuniform increases in arteriolar density of rat soleus and gastrocnemius muscle.

Microcirculation : the Official Journal of the Microcirculatory Society, Inc
M H LaughlinJames R Turk

Abstract

Exercise training has been shown to increase regional blood flow capacity to muscle tissue containing fibers that experience increased activity during exercise. The purpose of this study was to test the hypothesis that the increased blood flow capacity is partially the result of increases in arteriolar density (number of arterioles/mm2 of tissue), specifically in skeletal muscle tissue, with the largest relative increase in muscle fiber activity during training bouts. This hypothesis was tested by comparing and contrasting the effects of endurance exercise training (ET) and interval sprint training (IST) on arteriolar density in soleus muscle (S) red (Gr) and white (Gw) portions of gastrocnemius muscle of male Sprague Dawley rats. ET rats completed 10 weeks of treadmill training 30 m/min, 15% grade, 60 min/day, 5 days/week, while IST rats completed 10 weeks of IST consisting of six 2.5-min exercise bouts, with 4.5-min rest between bouts (60 m/min, 15% incline), 5 days/week. The hypothesis would be supported if ET increased arteriolar density in S and Gr and if IST increased arteriolar density in Gw. ET increased arteriolar density above values of sedentary rats (SED) in both the Gw (ET = 0.93 +/- 0.19 arterioles/microm2; SED = ...Continue Reading

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Citations

Mar 19, 2008·Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquée, Nutrition Et Métabolisme·Richard M McAllisterM Harold Laughlin
Nov 30, 2007·Medicine and Science in Sports and Exercise·Matthew S ReifenbergerM Harold Laughlin
Feb 2, 2017·The Journal of Bone and Joint Surgery. American Volume·Michael C GibbonsSamuel R Ward
Nov 28, 2016·Microcirculation : the Official Journal of the Microcirculatory Society, Inc·M Harold LaughlinDouglas K Bowles
Apr 6, 2019·Annals of Plastic Surgery·Soo Min ChaJin Hyun Kim
Jun 18, 2016·Journal of Applied Physiology·Stefanos Volianitis, Niels H Secher
Sep 15, 2019·Microcirculation : the Official Journal of the Microcirculatory Society, Inc·Julia ArcieroJoseph Unthank
Sep 27, 2015·American Journal of Physiology. Heart and Circulatory Physiology·T Dylan Olver, M Harold Laughlin
Jul 18, 2015·Journal of Applied Physiology·M Harold LaughlinJ Wade Davis
Mar 19, 2019·Exercise and Sport Sciences Reviews·T Dylan OlverJaume Padilla
Nov 13, 2020·Journal of Applied Physiology·Kelly N Z Fuller, John P Thyfault

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