Volume 20, Number 4 (winter 2010)                   J Urmia Univ Med Sci 2010, 20(4): 244-253 | Back to browse issues page


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F Aslanpur, MR Alipour, S Khamenei, N Ahmadiasl, R Keihan Manesh, Kh Ansarin, et al . RELATION BETWEEN HABITUAL AND OBLIGATORY ORONASAL SWITCHING POINT WITH TIDAL VOLUME AND RESPIRATION RATE DURING EXERCISE. J Urmia Univ Med Sci. 2010; 20 (4) :244-253
URL: http://umj.umsu.ac.ir/article-1-551-en.html

Master of Physiology, Tabriz University of Medical Science , farzanehaslanpur@yahoo.com
Abstract:   (10718 Views)

  F Aslanpur [1] , MSc MR Alipour [2] , PhD S Khamenei [3] , MD N Ahmadiasl [4] , PhD R Keihan Manesh [5] , PhD
Kh Ansarin
[6] , MD Z Shoareian [7] , BSc L Derafshpour [8] , MSc

 

  Received: 12 May, 2009 Accepted: 5 August, 2009

 Abstract

 Background & Aims: Oral breathing during exercise is effective in appearance of exercise-induced asthma. The aim of this study was to determine the relation between habitual and obligatory oral nasal switching points with tidal volume and respiration rate during exercise in non-athlete, and non-smoker adults.

 Materials & Methods: For this assessment twenty volunteers (ten males and ten females) were selected. After tidal volume and respiration frequency measurement, two protocols were done using body plethysmograph. In these protocols, habitual and obligatory oronasal switching point was determined during exercise on ergometer bicycle. Also ventilation rate and work load were measured in switching times.

 Results: The results indicate that habitual oral-nasal switching points were shorter than the obligatory oral nasal switching points and both switching times were shorter in females. The significant correlation was determined between tidal volume and obligatory oral nasal switching points in males.

 Conclusion: Our findings suggest that increase of ventilation rate is one of effective determinants of obligatory oral nasal switching points and effect of increase of tidal volume especially in females is more important for this determination. H owever, the ventilation rate is more in males than females, but slope of Alveolar ventilation / oral nasal switching points curve is steeper in females. In conclusion, ventilatory impulses drive from respiratory center is more accelerated in females in regard to men.

 Keywords: Oronasal breathing, Ventilation rate, Tidal volume, exercise

 

  Address : Physiology Department, Tabriz University of Medical Science, Tabriz, Iran Tel: (+98) 9143194031

 

  Email : farzanehaslanpur@yahoo.com

 

  Source: UMJ 2010: 20(4): 328 ISSN: 1027-3727



  [1] Master of Physiology, Tabriz University of Medical Science, Tabriz, Iran (Corresponding Author)

  [2] Assistant Professor of Physiology, Tuberculosis and Lung Research Center , Tabriz University of Medical Science, Tabriz, Iran

  [3] Professor of Physiology, Tabriz University of Medical Science, Tabriz, Iran

  [4] Associate Professor of Physiology, Tabriz University of Medical Science, Tabriz, Iran

  [5] Assistant Professor of Physiology, Tabriz University of Medical Science, Tabriz, Iran

  [6] Associate Professor of Pulmonology, Tuberculosis and Lung Research Center,Tabriz University of Medical Science, Tabriz, Iran

  [7] Laboratory Expert, Tabriz University of Medical Science, Tabriz, Iran

  [8] Master of Physiology, Tabriz University of Medical Science, Tabriz, Iran

Full-Text [PDF 244 kb]   (971 Downloads)    
Type of Study: Research | Subject: آناتومی
Received: 2010/03/31

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