Effects of additional respiratory resistance in adolescents with increased sympathetic tone

Abstract

Changes in neurogenic regulation of the heart function were studied after the onset of dosed lung ventilation with artificially increased total airway resistance in 8 male and 9 female adolescents aged 14-17 with originally high tone of the sympathetic system. Analysis of cardiointervalography and heart rate variability showed a significant decrease in sympathetic tone and an increase in parasympathetic tone due to the respiration with additional resistance, which can be regarded as a model for prediction of changes in neurogenic regulation of the heart function in children after a lengthy stay in a stuffy, enclosed area.