Figure 2From: Alpha-1-antitrypsin deficient man presenting with lung function decline associated with dust exposure: a case report Changes in forced expiratory volume in one second (FEV 1 ), forced vital capacity (FVC) and forced expiratory flow over 25% to 75% of the expired volume (FEF 25-75 ) over time during periods of heavy workplace dust exposure and light dust exposure as well as following work discontinuation. Solid line, FVC; dotted line, FEV1; dashed line, FEF25-75.Back to article page