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COPD is associated with reduced physical capacity. However, it is unclear whether pulmonary emphysema, which can occur without COPD, is associated with reduced physical activity in daily life, particularly among people without COPD and never smokers. We hypothesized that greater percentage of emphysema-like lung on CT scan is associated with reduced physical activity assessed by actigraphy and self-report.

It is well known that systemic administration of corticosteroids has a dual effect on growth hormone (GH) secretion in man: acute systemic administration stimulates GH release, whereas chronic administration consistently blocks it. In this study, we evaluate whether administration of inhaled corticosteroids could acutely stimulate GH secretion, and whether this effect could be dose related