Sniff nasal inspiratory pressure in patients with moderate-to-severe chronic obstructive pulmonary disease: learning effect and short-term between-session repeatability

Nikoletou, D., Rafferty, G., Man, W.D.-C., Mustfa, N., Donaldson, N., Grant, R.L., Johnson, L. and Moxham, M. (2014) Sniff nasal inspiratory pressure in patients with moderate-to-severe chronic obstructive pulmonary disease: learning effect and short-term between-session repeatability. Respiration, 88(5), ISSN (print) 0025-7931