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Gender and breathing route module respiratory variability in humans
Author(s) -
BuSha Brett F,
Hage Erik,
Hofmann Cory
Publication year - 2009
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.23.1_supplement.1010.1
Subject(s) - nose , respiratory system , breathing , respiratory rate , medicine , expiration , heart rate variability , tidal volume , audiology , respiration , anesthesia , heart rate , cardiology , surgery , blood pressure , anatomy
The integrative nature of the respiratory control system embeds temporal correlations in the variability of breathing. To test the hypothesis that gender and/or breathing route can modify the temporal correlations in respiratory variability, 12 female and 12 male adult subjects were fitted with a resistive belt to measure chest volume and surface electrodes to measure ECG. Subjects breathed quietly through the nose or mouth while seated in a chair. Breath to breath interval (BBI) was recorded for 130 consecutive breaths and beat to beat interval of the heart rate (RRI) was recorded for 877 consecutive beats. Temporal correlations embedded in the variability of BBI and RRI were quantified using detrended fluctuation analysis. During nose breathing as compared to mouth breathing, there was a significant gender interaction, such that nose breathing resulted in 15% increase and a 15% decrease in the DFA of BBI in female and male subjects, respectively. Simultaneously, there was a 10% reduction in the correlated behavior of RRI in male and female subjects; suggesting a cardio‐respiratory coupling effect across gender. We conclude that there is a subtle and significant gender effect between nose and mouth breathing quantifiable through changes in the temporal correlations embedded in respiratory variability. This work was supported by The College of New Jersey's Mentored Undergraduate Research Experience grant.