The aim of this study was to ascertain the persistence of heart rate and blood pressure oscillations at the onset of voluntary apnea in humans and to assess the dependence of the fluctuations parameters on the chemoreceptor activity. In 24 young subjects (10 males, 14 females, mean age 20.4 years) heart rate (represented by its reciprocal value--RR-intervals), systolic blood pressure (SBP) and ...

The control system of breathing can be considered as a closed loop system, consisting of two subsystems: the controlling system and the controlled system. Both systems are defined by their input-output relationships. The controlling system is defined by the Respiratory Centers that are responsible for two separate, but overlapping, patterns: the automatic control pattern and the behavioral or v...

background and aims. lichen planus (lp) is a relatively common, chronic dermato-mucosal disease that often affects the oral mucosa. among bacterial infections affecting lp, helicobacter pylori has recently been proposed as an important etiologic factor. the present study was designed to evaluate the association of lp and h. pylori infection. materials and methods. this study included 30 patient...

To determine whether the yogic Ujjayi pranayamic type of breathing that involves sensory awareness and consciously controlled, extremely slow-rate breathing including at least a period of end-inspiration breath holding in each respiratory cycle would alter oxygen consumption or not, ten males with long standing experience in pranayama, and volunteering to participate in the laboratory study wer...

extract: most people have breathing blessing but some patients are who have struggling terribly for this breathing. this article is the first part of three section's series that tells you how diagnose and treat the breathing disorder of these patients. the situation which known to all is that you inter to patient's room and see that he/she is breathing tribally. such situation for you...