Spectral Analysis of Breathing Pattern in Man during Exercise
In recent years analysis of the breathing pattern parameters in various conditions was used to study respiratory control in man. The findings of a significant positive correlation between tidal volume and inspiratory time and the weaker positive correlation between inspiratory time and expiratory time, as well, as between tidal volume and expiratory time were described as a result of a mechanism which controls the ventilation in every single breath (Newsom Davis and Staag, 1975). These correlations could be alternatively explained by slow synchroneous oscillations of breathing pattern parameters studied in our laboratory (Siegelovå and Kopecný, 1985). The aim of the present study was to follow the slow waves of breathing pattern parameters during exercise and also to evaluate the role of both control mechanisms — a single breath regulatory mechanism and slow oscillations of breathing pattern.
KeywordsTidal Volume Power Spectral Density Breathing Pattern Weak Positive Correlation Slow Oscillation
Unable to display preview. Download preview PDF.
- Blackmann, R.B., and Turkey, J.W., 1959, “The measurement of power spectra”, Dover, New York.Google Scholar
- Modarreszadeh, M., Elhefnawy, A., and Bruce, E., 1987, Components of breath-to-breath variability of respiratory cycle parameters in awake man, Fed. Proc., 46: 658.Google Scholar
- Newsom Davis, J., and Staag, D., 1975, Interrelationships of the volume and time components of individual breath in resting man, J. Physiol. 245: 481.Google Scholar
- Patil, C.P., Saunders, K.B., and Sayers, B., Mc., 1986, An analysis of the irregularity of breathing at rest and during light exercise in man, I.R.C.S. Med. Sci., 14: 644.Google Scholar
- SiegelovA, J., and Kopecn’, J., 1985, Spectral analysis of breathing pattern in man, Physiol. Bohemoslov., 34: 321.Google Scholar