Respiratory Consequences of Mild-to-Moderate Obesity: Impact on Exercise Performance in Health and in Chronic Obstructive Pulmonary Disease

<table>(a) Static lung volumes measured by body plethysmography are shown at rest: expiratory reserve volume (ERV) and functional residual capacity (FRC) are decreased, and inspiratory capacity (IC) is increased in the obese (OB) group compared with the normal weight (NW) group of healthy adults. (b) Maximal and tidal flow-volume loops are shown at rest in normal weight (dashed lines) and obese (solid lines) subjects. In obesity, tidal flow-volume loops are shifted rightwards and maximal midexpiratory flow rates may be reduced resulting in greater expiratory flow limitation during resting breathing. RV: residual volume.</table>

Pulmonary Medicine

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Figure 1

Figure 1: Respiratory Consequences of Mild-to-Moderate Obesity: Impact on Exercise Performance in Health and in Chronic Obstructive Pulmonary Disease 

Figure 1 | Respiratory Consequences of Mild-to-Moderate Obesity: Impact on Exercise Performance in Health and in Chronic Obstructive Pulmonary Disease 