Research article summary (published 29 Sep 1999):

Muscle pump and central command during recovery from exercise in humans.

Full Abstract

We sought to determine the relative contributions of cessation of skeletal muscle pumping and withdrawal of central command to the rapid decrease in arterial pressure during recovery from exercise. Twelve healthy volunteers underwent three exercise sessions, each consisting of a warm-up, 3 min of cycling at 60% of maximal heart rate, and 5 min of one of the following recovery modes: seated (inactive), loadless pedaling (active), and passive cycling. Mean arterial pressure (MAP), cardiac output, thoracic impedance, and heart rate were measured. When measured 15 s after exercise, MAP decreased less (P < 0.05) during the active (-3 +/- 1 mmHg) and passive (-6 +/- 1 mmHg) recovery modes than during inactive (-18 +/- 2 mmHg) recovery. These differences in MAP persisted for the first 4 min of recovery from exercise. Significant maintenance of central blood volume (thoracic impedance), stroke volume, and cardiac output paralleled the maintenance of MAP during active and passive conditions during 5 min of recovery. These data indicate that engaging the skeletal muscle pump by loadless or passive pedaling helps maintain MAP during recovery from submaximal exercise. The lack of differences between loadless and passive pedaling suggests that cessation of central command is not as important.

Author information

Author/s: Carter, R (R); Watenpaugh, D E (DE); Wasmund, W L (WL); Wasmund, S L (SL); Smith, M L (ML);

Affiliation: Department of Integrative Physiology, University of North Texas Health Science Center, Fort Worth, Texas 76107, USA. rcarter(-atsign-)hsc.unt.edu

Grants: HL-49266 (Agency:NHLBI NIH HHS)

Journal and publication information

Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S.

Journal: Journal of applied physiology (Bethesda, Md. : 1985) (J Appl Physiol), published in UNITED STATES. (Language: eng)

Reference: 1999-Oct; vol 87 (issue 4) : pp 1463-9

Dates: Created 1999/11/17; Completed 1999/11/17; Revised 2007/11/14;

PMID: 10517779, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult Bicycling - physiology Blood Pressure - physiology Brain - physiology Cardiac Output - physiology Exercise - physiology Female

Female Heart Rate - physiology Humans Male Muscle, Skeletal - physiology Stroke Volume - physiology Vascular Resistance - physiology

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