An evaluation of the acute impact of pursed lips breathing on walking distance in nonspontaneous pursed lips breathing chronic obstructive pulmonary disease patients.

This study was designed to test the effects of pursed lips breathing (PLB) during exercise in patients with chronic obstructive pulmonary disease (COPD) who did not spontaneously perform PLB. Sixty-nine COPD patients, mean FEV1 (SD) 1.09 (0.

Respiratory and cardiovascular responses to manual chest percussion in normal subjects.

The respiratory and cardiovascular responses to manual chest percussion were studied in seven naive healthy subjects. Percussion during quiet breathing, percussion with thoracic expansion exercises (TEE) and TEE alone were applied to subjects in side-lying. Inspired volume, oxygen consumption, oxygen saturation, heart rate and blood pressure were measured before, during and after each technique.

Relationship of solar keratosis and history of skin cancer to objective measures of actinic skin damage.

Two methods for the assessment of severity of actinic skin damage were evaluated in a population-based survey of 1216 subjects. After controlling for the effects of age, skin texture changes graded by cutaneous microtopography were found to be associated strongly with the presence of solar keratoses and a past history of non-melanotic skin cancer. Changes in skin condition graded by paraocular photography had a weaker relationship with the presence of keratoses and showed no association with non-melanotic skin cancer.