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Effects of cognitive and psychomotor tasks on breath-holding span

Effects of cognitive and psychomotor tasks on breath-holding span ALPHERJICTOR S.,Ross B. NELSON III, AND RICHARD L. BLANTON. Effects of cognitive and psychomotor tasks on breathholding . J. Appl. Physiol. 61(s): 1149-1152, 1986.-Bartlett (J. Appl. Physiol. 42: 717-721, 1977) demonstrated that a psychomotor task (hand dynamometer) extended breath holds at functional residual capacit,y (FRC) in a manner comparable to Valsalva and Mueller maneuvers. This led us to the hypothesis that distraction of a subject’s attention from dyspneic sensations accounted for Bartlett’s findings. This hypothesis was tested by comparing a hand dynamometer task (rubberbulb squeeze) with a mental performance task (mental arithmetic). Results for tasks performed separately and concurrently in a within-subjects design showed comparable effects, without reaching a FRC breath-hold performance ceiling. Implications of results for effects of nonmechanical and nonchemical factors on respiratory drive are discussed. respiratory drive; control of breathing; dyspnea ON FACTORS affecting has focussed on two variables: chemical and mechanical (9). The relative importance of these factors has been a subject of considerable study under a variety of experimental conditions (e.g., Ref. 10). Generally mechanical factors (e.g., manipulation of length-tension relationships through rebreathing) have been thought to be more important at constant levels of Pco~, i.e., when chemosensory information is constant and therefore http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

Effects of cognitive and psychomotor tasks on breath-holding span

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Publisher
The American Physiological Society
Copyright
Copyright © 1986 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
Publisher site
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Abstract

ALPHERJICTOR S.,Ross B. NELSON III, AND RICHARD L. BLANTON. Effects of cognitive and psychomotor tasks on breathholding . J. Appl. Physiol. 61(s): 1149-1152, 1986.-Bartlett (J. Appl. Physiol. 42: 717-721, 1977) demonstrated that a psychomotor task (hand dynamometer) extended breath holds at functional residual capacit,y (FRC) in a manner comparable to Valsalva and Mueller maneuvers. This led us to the hypothesis that distraction of a subject’s attention from dyspneic sensations accounted for Bartlett’s findings. This hypothesis was tested by comparing a hand dynamometer task (rubberbulb squeeze) with a mental performance task (mental arithmetic). Results for tasks performed separately and concurrently in a within-subjects design showed comparable effects, without reaching a FRC breath-hold performance ceiling. Implications of results for effects of nonmechanical and nonchemical factors on respiratory drive are discussed. respiratory drive; control of breathing; dyspnea ON FACTORS affecting has focussed on two variables: chemical and mechanical (9). The relative importance of these factors has been a subject of considerable study under a variety of experimental conditions (e.g., Ref. 10). Generally mechanical factors (e.g., manipulation of length-tension relationships through rebreathing) have been thought to be more important at constant levels of Pco~, i.e., when chemosensory information is constant and therefore

Journal

Journal of Applied Physiology – The American Physiological Society

Published: Sep 1, 1986

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