Article: Comparison of breathing patterns during exercise in patients with obstructive and restrictive ventilatory abnormalities

Abstract- Patients with obstructive and restrictive ventilatory abnormalities suffer from exercise intolerance and dyspnea. Breathing pattern components (volume, flow, and timing) during incremental exercise may provide further insight in the role played by dynamic hyperinflation in the genesis of dyspnea. This study analyzed the breathing patterns of patients with obstructive and restrictive ventilatory abnormalities during incremental exercise. It also explored breathing pattern components with dyspnea at maximum oxygen uptake (VO^sub 2^ max). Twenty patients, thirteen obstructive patients (forced expiratory volume 38% + or - 13% predicted, forced expiratory volume in 1 s/forced vital ...

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