HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Free Full Text (PDF) Free All Versions of this Article: 96/2/668    most recent 00522.2003v1 Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Web of Science (18) Citing Articles via Google Scholar Google Scholar Articles by Wilson, T. E. Articles by Crandall, C. G. Search for Related Content PubMed PubMed Citation Articles by Wilson, T. E. Articles by Crandall, C. G.

Active recovery attenuates the fall in sweat rate but not cutaneous vascular conductance after supine exercise

¹Institute for Exercise and Environmental Medicine, Presbyterian Hospital of Dallas, Dallas 75231; ²Department of Integrative Physiology, University of North Texas Health Science Center, Fort Worth 76107; and ³Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390

Submitted 15 May 2003 ; accepted in final form 5 September 2003

The purpose of this study was to identify whether baroreceptor unloading was responsible for less efficient heat loss responses (i.e., skin blood flow and sweat rate) previously reported during inactive compared with active recovery after upright cycle exercise (Carter R III, Wilson TE, Watenpaugh DE, Smith ML, and Crandall CG. J Appl Physiol 93: 1918-1929, 2002). Eight healthy adults performed two 15-min bouts of supine cycle exercise followed by inactive or active (no-load pedaling) supine recovery. Core temperature (T_core), mean skin temperature (T_sk), heart rate, mean arterial blood pressure (MAP), thoracic impedance, central venous pressure (n = 4), cutaneous vascular conductance (CVC; laser-Doppler flux/MAP expressed as percentage of maximal vasodilation), and sweat rate were measured throughout exercise and during 5 min of recovery. Exercise bouts were similar in power output, heart rate, T_core, and T_sk. Baroreceptor loading and thermal status were similar during trials because MAP (90 ± 4, 88 ± 4 mmHg), thoracic impedance (29 ± 1, 28 ± 2 ), central venous pressure (5 ± 1, 4 ± 1 mmHg), T_core (37.5 ± 0.1, 37.5 ± 0.1°C), and T_sk (34.1 ± 0.3, 34.2 ± 0.2°C) were not significantly different at 3 min of recovery between active and inactive recoveries, respectively; all P > 0.05. At 3 min of recovery, chest CVC was not significantly different between active (25 ± 6% of maximum) and inactive (28 ± 6% of maximum; P > 0.05) recovery. In contrast, at this time point, chest sweat rate was higher during active (0.45 ± 0.16 mg·cm^-2·min^-1) compared with inactive (0.34 ± 0.19 mg·cm^-2·min^-1; P < 0.05) recovery. After exercise CVC and sweat rate are differentially controlled, with CVC being primarily influenced by baroreceptor loading status while sweat rate is influenced by other factors.

skin blood flow; baroreceptors; central command

This article has been cited by other articles:

				O. Jay, D. Gagnon, M. B. DuCharme, P. Webb, F. D. Reardon, and G. P. Kenny Human heat balance during postexercise recovery: separating metabolic and nonthermal effects Am J Physiol Regulatory Integrative Comp Physiol, May 1, 2008; 294(5): R1586 - R1592. [Abstract] [Full Text] [PDF]

				G. P. Kenny and O. Jay Sex differences in postexercise esophageal and muscle tissue temperature response Am J Physiol Regulatory Integrative Comp Physiol, April 1, 2007; 292(4): R1632 - R1640. [Abstract] [Full Text] [PDF]

				B. M. Lynn, J. L. McCord, and J. R. Halliwill Effects of the menstrual cycle and sex on postexercise hemodynamics Am J Physiol Regulatory Integrative Comp Physiol, March 1, 2007; 292(3): R1260 - R1270. [Abstract] [Full Text] [PDF]

				N. H. McInnis, W. S. Journeay, O. Jay, E. Leclair, and G. P. Kenny 15{degrees} Head-down tilt attenuates the postexercise reduction in cutaneous vascular conductance and sweating and decreases esophageal temperature recovery time J Appl Physiol, September 1, 2006; 101(3): 840 - 847. [Abstract] [Full Text] [PDF]

				G. P. Kenny, J. E. Murrin, W. S. Journeay, and F. D. Reardon Differences in the postexercise threshold for cutaneous active vasodilation between men and women Am J Physiol Regulatory Integrative Comp Physiol, January 1, 2006; 290(1): R172 - R179. [Abstract] [Full Text] [PDF]

				W. s. Journeay, F. D. Reardon, N. H. McInnis, and G. P. Kenny Nonthermoregulatory control of cutaneous vascular conductance and sweating during recovery from dynamic exercise in women J Appl Physiol, November 1, 2005; 99(5): 1816 - 1821. [Abstract] [Full Text] [PDF]

				B. W. Wilkins, C. T. Minson, and J. R. Halliwill Regional hemodynamics during postexercise hypotension. II. Cutaneous circulation J Appl Physiol, December 1, 2004; 97(6): 2071 - 2076. [Abstract] [Full Text] [PDF]

				M. Shibasaki, M. Sakai, M. Oda, and C. G. Crandall Muscle mechanoreceptor modulation of sweat rate during recovery from moderate exercise J Appl Physiol, June 1, 2004; 96(6): 2115 - 2119. [Abstract] [Full Text] [PDF]

				W. S. Journeay, F. D. Reardon, C. R. Martin, and G. P. Kenny Control of cutaneous vascular conductance and sweating during recovery from dynamic exercise in humans J Appl Physiol, June 1, 2004; 96(6): 2207 - 2212. [Abstract] [Full Text] [PDF]