Fig 3. Time to perform TUG and iTUG (in seconds) under each inspiratory loading The boxes delineate the interquartile space with indication of the median within the boxes; the extremities of the whiskers correspond to the lowest datum still within 1.5 IQR of the lower quartile and the highest datum still within 1.5 IQR of the upper quartile; the individual data points represent outliers.

QB: quiet breathing (no apparatus, no load); ITL: inspiratory threshold loading (in % of maximal static inspiratory pressure: 10, 20, 40, 60%); BH: breath-holding