Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/6999
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dc.contributor.authorPontifex, E.-
dc.contributor.authorWilliams, M.-
dc.contributor.authorLunn, R.-
dc.contributor.authorParsons, D.-
dc.date.issued2002-
dc.identifier.citationJournal of Physiotherapy, 2002; 48(3):209-213-
dc.identifier.issn0004-9514-
dc.identifier.issn1449-2059-
dc.identifier.urihttp://hdl.handle.net/2440/6999-
dc.description.abstractCoughing and huffing have been shown to be effective airway clearance techniques and some authors have anecdotally reported that a huff requires less energy than a series of coughs commencing and finishing at the same lung volume. The aim of this study was to determine whether there is a difference in the energy expenditure between periods of huffing and directed voluntary coughing commencing from the same initial lung volume in young asymptomatic subjects. Energy expenditure was measured using open-circuit indirect calorimetry equipment. Twenty-four non-smoking asymptomatic subjects (12 male, 12 female, aged 18-24 years), without any form of disease and within 10% of their predicted pulmonary function, completed the study. Energy expenditure was measured over three 10min, randomly ordered sessions of huffing, directed coughing and rest. The forced expiratory sessions comprised a single huff or double-barrel cough (both starting at total lung capacity) at the end of every two minutes. Each session was separated by a 5min washout period. No significant difference in energy expenditure was found between the huffing and directed coughing periods (mean difference 0.003 mL/kg/min (95% CI -0.160 to 0.114) and both produced significantly greater energy expenditure than rest (rest and huff mean difference 0.309 mL/kg/min (95% CI 0.080 to 0.549) and rest and cough mean difference 0.306 mL/kg/min (95% CI 0.074 to 0.508)). The suggested benefits of huffing versus coughing in terms of energy conservation are yet to be shown.-
dc.description.statementofresponsibilityEdward Pontifex, Marie T Williams, Rebecca Lunn and David Parsons-
dc.language.isoen-
dc.publisherAustralian Physiotherapy Assoc-
dc.rights© Australian Physiotherapy Association-
dc.source.urihttp://ajp.physiotherapy.asn.au/AJP/vol_48/3/volume48_number3.cfm-
dc.subjectCough-
dc.subjectEnergy Metabolism-
dc.subjectLung Volume Measurement-
dc.subjectRespiratory Disorders-
dc.titleThe effect of huffing and directed coughing on energy expenditure in young asymptomatic subjects-
dc.typeJournal article-
dc.identifier.doi10.1016/S0004-9514(14)60225-7-
pubs.publication-statusPublished-
dc.identifier.orcidParsons, D. [0000-0003-1746-3290]-
Appears in Collections:Aurora harvest
Paediatrics publications

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