Relationship of peak flow rate and peak velocity time during voluntarv couzhinc

The differences in phonation between men and women are thought to occur from anatomical differences in the larynx. However, it is not known if there are any differences in cough dynamics between the sexes. We investigated this by asking 100 healthy, non-smoking adults (50 male) to perform a voluntar...

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Bibliographic Details
Published in:British journal of anaesthesia : BJA 1995-06, Vol.74 (6), p.714-716
Main Authors: SINGH, P., MAHAJAN, R.P., MURTY, G.E., AITKENHEAD, A.R.
Format: Article
Language:English
Subjects:
anatomy
Cough
Larynx
Larynx, anatomy
Measurement techniques
Measurement techniques, tussometry
tussometry
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Summary:The differences in phonation between men and women are thought to occur from anatomical differences in the larynx. However, it is not known if there are any differences in cough dynamics between the sexes. We investigated this by asking 100 healthy, non-smoking adults (50 male) to perform a voluntary cough into a tussometer. Each volunteer coughed at four different lung volumes, ranging from total lung capacity to functional residual capacity. There was a positive correlation between peak velocity time and cough peak flow rate in both males (r = 0.73, P < 0.001) and females (r = 0.78, P < 0.001). Multiple regression analysis showed that height (P < 0.05) and sex (P < 0.001) were significant determinants of the relationship between peak flow rate and peak velocity time. In a height-matched subgroup, sex differences remained significant (P
ISSN:0007-0912
1471-6771
DOI:10.1093/bja/74.6.714