Age is the main factor related to expiratory flow limitation during constant load exercise
نویسندگان
چکیده
منابع مشابه
Detection of expiratory flow limitation during exercise in COPD patients.
The negative expiratory pressure (NEP) method was used to detect expiratory flow limitation at rest and at different exercise levels in 4 normal subjects and 14 patients with chronic obstructive pulmonary disease (COPD). This method does not require performance of forced expirations, nor does it require use of body plethysmography. It consists in applying negative pressure (-5 cmH2O) at the mou...
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In some trained athletes, maximal exercise ventilation is believed to be constrained by expiratory flow limitation (FL). Using the negative expiratory pressure method, we assessed whether FL was reached during a progressive maximal exercise test in 10 male competition cyclists. The cyclists reached an average maximal O2 consumption of 72 ml. kg-1. min-1 (range: 67-82 ml. kg-1. min-1) and ventil...
متن کاملExpiratory flow limitation during tidal breathing.
Dr KOULOURIS and co-workers [1] found that some patients with chronic obstructive pulmonary disease (COPD) and apparent expiratory flow-limitation during tidal breathing had increased expiratory flow during tidal breathing when negative pressure was applied to the airway. They concluded that flow could not have been limited during control tidal expirations. I thought that the shape of the flow-...
متن کاملExpiratory flow limitation.
The first major advance in understanding expiratory flow limitation of the lungs came with the description of isovolume pressure-flow curves. These curves documented the existence of a volume-dependent limit to maximal expiratory flow and led directly to the description of the maximal expiratory flow-volume (MEFV) curve. Definitive modeling of flow limitation awaited the description of a locali...
متن کاملExpiratory flow limitation during exercise in COPD: detection by manual compression of the abdominal wall.
Manual compression of the abdomen (MCA) during spontaneous expiration is a simple method for the detection of flow limitation in the chronic obstructive pulmonary disease (COPD) patients during resting breathing, based on comparison of flow/volume curves obtained during MCA with that of the preceding control breath. It was assessed whether this nonstandardized technique is also feasible during ...
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ژورنال
عنوان ژورنال: Clinics
سال: 2018
ISSN: 1807-5932,1980-5322
DOI: 10.6061/clinics/2018/e439