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The effect of aerobic fitness on the...

Raymond, Duncan Andrew.

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The effect of aerobic fitness on the cardiovascular and sympathetic nervous system response to physiological stress at rest and during dynamic exercise.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The effect of aerobic fitness on the cardiovascular and sympathetic nervous system response to physiological stress at rest and during dynamic exercise./
Author:	Raymond, Duncan Andrew.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2012,
Description:	127 p.
Notes:	Source: Masters Abstracts International, Volume: 51-03.
Contained By:	Masters Abstracts International51-03(E).
Subject:	Physical education. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=MR90678
ISBN:	9780494906781

The effect of aerobic fitness on the cardiovascular and sympathetic nervous system response to physiological stress at rest and during dynamic exercise.
Raymond, Duncan Andrew.

The effect of aerobic fitness on the cardiovascular and sympathetic nervous system response to physiological stress at rest and during dynamic exercise. - Ann Arbor : ProQuest Dissertations & Theses, 2012 - 127 p.

Source: Masters Abstracts International, Volume: 51-03.

Thesis (M.Sc.)--University of Alberta (Canada), 2012.

A cardio-protective adaptation associated with aerobic fitness may be an attenuated sympathetic nervous system (SNS) and cardiovascular response to stress. The hypothesis that the cardiovascular and SNS responses to physiological stress at rest and during exercise would be a function of maximal aerobic capacity (VO2max) was investigated. Young males performed ramp cycling exercise to determine VO2max and were then assigned to low (n=8), mid (n=8) and high (n=7) aerobic fitness groups. The physiological responses to a cold-pressor test and isometric handgrip exercise were measured at rest and during moderate- and heavy-intensity knee-extension (KE) exercise. Highly fit subjects had lower resting muscle sympathetic nerve activity (MSNA), but a larger MSNA response to physiological stress at rest. The cardiovascular response to stress at rest or during KE exercise was not altered by aerobic fitness. Heavy-intensity KE exercise attenuated leg vasoconstriction in response to physiological stress by a similar magnitude in all groups.

ISBN: 9780494906781Subjects--Topical Terms:

635343
Physical education.

The effect of aerobic fitness on the cardiovascular and sympathetic nervous system response to physiological stress at rest and during dynamic exercise.
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520 $a A cardio-protective adaptation associated with aerobic fitness may be an attenuated sympathetic nervous system (SNS) and cardiovascular response to stress. The hypothesis that the cardiovascular and SNS responses to physiological stress at rest and during exercise would be a function of maximal aerobic capacity (VO2max) was investigated. Young males performed ramp cycling exercise to determine VO2max and were then assigned to low (n=8), mid (n=8) and high (n=7) aerobic fitness groups. The physiological responses to a cold-pressor test and isometric handgrip exercise were measured at rest and during moderate- and heavy-intensity knee-extension (KE) exercise. Highly fit subjects had lower resting muscle sympathetic nerve activity (MSNA), but a larger MSNA response to physiological stress at rest. The cardiovascular response to stress at rest or during KE exercise was not altered by aerobic fitness. Heavy-intensity KE exercise attenuated leg vasoconstriction in response to physiological stress by a similar magnitude in all groups.
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