Maximum phonation times and vital capacity in dysphonic women

In health--vital capacity is maximum in supine position.

Vital capacity, frequently measured clinically as an index of pulmonary function, gives useful information about the strength of respiratory muscles and other aspects of lung functions. It is generally noted in sitting position. As in the supine position, respiratory excursions of diaphragm is highest in normal breathing, this study was planned to note whether there occurred any alteration in v...

Muscleskeletal pain in dysphonic women.

OBJECTIVE To investigate the location, frequency and intensity of muscle pain in dysphonic functional/organofunctional women in comparison to women with healthy voices. METHODS Sixty women, ranging in age from 18 to 45 years, divided into two groups: Dysphonic Group (DG) - 30 women with functional or organofunctional dysphonia; Non-Dysphonic Group (NDG) - 30 women without vocal complaints, an...

Effects of voice training on phonetograms and maximum phonation times in female speech therapy students

The relation between the fast vital capacity curves and the maximum breathing capacity.

The maximum breathing capacity (M.B.C.) of an individual is defined as the greatest amount of air he can breathe in one minute. The test in which it is measured was introduced by Hermannsen (1933) as a test of the mechanical efficiency of the respiratory apparatus. Since then it has been widely accepted as fulfilling that purpose and has been quoted (Gray, Barnum, Matheson, and Spies, 1950) as ...

Pulmonary function tests (maximum inspiratory pressure, maximum expiratory pressure, vital capacity, forced vital capacity) predict ventilator use in late-onset Pompe disease

In patients with Late-Onset Pompe Disease (LOPD), progressive respiratory muscle involvement leads to reduced pulmonary function, with respiratory failure the most common cause of mortality. Early disease manifestations include sleep-disordered breathing, which can be treated with non-invasive ventilation; however, progressive diurnal deficits can require invasive ventilation. To determine if p...