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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Lung. 2015 Aug 9;193(5):725–731. doi: 10.1007/s00408-015-9780-0

Fig. 1.

Fig. 1

Area under the curve (AUC). A representative patient showing the AUC for the parameter VT/Ti. AUC was calculated over the exercise isotime (160 s in this example) and is expressed as arbitrary units (a.u.)