Fig. 4From: Optimization of sniff nasal inspiratory pressure (SNIP) measurement methodology in healthy subjectsMean (± SD) SNIP data obtained by subjects within the a first, b second, c third and d fourth sets for tests in the actual order they were performed, irrespective of technique used (n = 51). * denotes significant difference in mean SNIP between repeat number 1 and 20 (P = 0.006 within (a), the first set)Back to article page