Fig. 6

The thoracic area time curves during quiet breathing and deep breathing. The coronal curve amplitude of idiopathic pulmonary fibrosis (IPF) patients during quiet breathing is slightly lower than that of the control group(a). The sagittal curve amplitude of IPF patients during quiet breathing is slightly lower than that of the control group(b). The coronal curve amplitude of IPF patients during deep breathing is significantly lower than that of the control group(c). The sagittal curve amplitude of IPF patients during deep breathing is significantly lower than that of the control group(d)