Fig. 4
Repeated fluoroscopic measurements of right hemidiaphragm excursion in five consecutive measures of inspiration to full inspiration (to inspiratory capacity, IC) and as a sniff inspiration. During inspiratory capacity inspiration only one recording (the second) was statistically significantly different (p < 0.05) than the other measures. During sniff inspiration two (the second and the third) recordings were statistically different to the others (p < 0.05). Results indicate that reproducibility is lower in sniff inspiration than in inspiration to inspiratory capacity