The purpose of this study was to evaluate the electromyographic activity of the accessory inspiratory muscles and the diaphragmatic amplitude (DA) in nasal and mouth-breathing adults. The study evaluated 38 mouth-breathing (MB group) and 38 nasal-breathing (NB group) adults, from 18 to 30years old and both sexes. Surface electromyography (sEMG) was used to evaluate the amplitude and symmetry (P...

purpose: patterned breathing allows standardized serial measurements of heart rate variability and baroreflex indices. the slow breathing augments these parameters, and regular exercises, including yoga breathing practices with even respiratory rates have long-term beneficial effects in cardiovascular diseases. the role of temporization of breathing phases, i.e. the ratio of expiration to inspi...

Exercise rehabilitation programmes are increasingly recommended in young asthmatics, but it is unclear whether or not training should incorporate instructions on breathing pattern. In this study, we examined the effects of voluntarily decreasing breathing frequency on their ventilatory equivalents for oxygen and carbon dioxide (minute ventilation (V'E)/oxygen consumption (V'O2) and V'E/CO2 prod...

STUDY OBJECTIVE To assess the discontinuous incremental threshold loading (DC-ITL) test as a measure of respiratory muscle endurance for patients with COPD in terms of perceived breathing difficulty, reliability, and validity. DESIGN The DC-ITL test was repeated three times at weekly intervals under identical test conditions. SETTING Clinical research laboratory. PATIENTS Forty-eight pati...

An experimental apparatus designed to study firefighter safety equipment exposed to a thermal environment was developed. The apparatus consisted of an elevated temperature flow loop with the ability to heat the air stream up to 200°C. The thermal and flow conditions at the test section were characterized using thermocouples and bi-directional probes. The safety equipment examined in this study ...

To test the precision of estimates of body water and urea clearance in peritoneal dialysis (PD), we compared, in 925 PD patients who underwent formal urea kinetics studies, estimates of V and Kt/V urea obtained by the use of the Watson, Hume, and Sahlgrenska anthropometric formulas and two novel formulas, one (Vcreat) computed using fat-free mass (FFM) estimated from creatinine kinetics as 0.73...

OBJECTIVE To investigate associations between mouth breathing (MBr), nose breathing (NBr) and body posture classification and clinical variables in children and adolescents, by comparing patients with mouth breathing syndrome with a control group of similar age. METHODS This was an observational, analytical, controlled, cross-sectional study conducted at a university hospital. Children aged 5...

regional differences in concept and therapeutic value of yoga. A questionnaire comprising twenty questions with multiple choice responses was specifically constructed for this study and emaited to one member each of the four cyberclubs in New Delhi, Kanpur, Chennai and Bangalore with a request to circulate it'among their club members and acquaintances. Assuring confidentiality, the questionnair...