Document Detail

Changes in peak expiratory flow and respiratory strength during the menstrual cycle.
MedLine Citation:
PMID:  16476654     Owner:  NLM     Status:  MEDLINE    
This study evaluated the spirometry and respiratory static pressures in 17 young women, twice a week for three successive ovulatory menstrual cycles to determine if such variables changed across the menstrual, follicular, periovulatory, early-to-mid luteal and late luteal phases. The factors phases of menstrual cycle and individual cycles had no significant effect on the spirometry variables except for peak expiratory flow (PEF) and respiratory static pressures. Significant weak positive correlations were found between the progesterone:estradiol ratio and PEF and between estrogen and tidal volume (r = 0.37), inspiratory time (r = 0.22), expiratory time (r = 0.19), maximal inspiratory pressure (r = 0.25) and maximal expiratory pressure (r = 0.20) and for progesterone and maximal inspiratory pressure (r = 0.32) during the early-to-mid luteal phase. Although most parameters of the spirometry results did not change during the menstrual cycle, the correlations observed between sexual hormones and respiratory control variables suggest a positive influence of sexual female hormones controlling the thoracic pump muscles in the luteal phase.
Selma Bruno da Silva; Elizabel de Sousa Ramalho Viana; Maria Bernardete Cordeiro de Sousa
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-04-19
Journal Detail:
Title:  Respiratory physiology & neurobiology     Volume:  150     ISSN:  1569-9048     ISO Abbreviation:  Respir Physiol Neurobiol     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-02-14     Completed Date:  2006-05-09     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  101140022     Medline TA:  Respir Physiol Neurobiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  211-9     Citation Subset:  IM    
Department of Physical Therapy, Federal University of Rio Grande do Norte, Natal, Brazil.
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MeSH Terms
Analysis of Variance
Estradiol / metabolism
Menstrual Cycle / physiology*
Progesterone / metabolism
Pulmonary Ventilation / physiology*
Respiratory Function Tests / methods
Statistics as Topic
Time Factors
Reg. No./Substance:
50-28-2/Estradiol; 57-83-0/Progesterone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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