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. Author manuscript; available in PMC: 2014 Mar 12.
Published in final edited form as: Eur Respir J. 2011 Oct 27;39(6):1449–1457. doi: 10.1183/09031936.00125011

FIGURE 6.

FIGURE 6

The relative contributions of resistive and elastic respiratory work to the total work of breathing (Wb) during graded exercise. The general relationship between each component of Wb and minute ventilation (V′E) during graded exercise for a) healthy controls and b) patients with heart failure (HF) is shown. The relative contribution of inspiratory and expiratory resistive Wb to the total mechanical cost of breathing appears larger for HF patients than control subjects during graded exercise.