Table 2. Swallowing variables per bolus according to bolus type (5ml, 10ml, or yogurt) and test condition: during spontaneous breathing (SB) and with NIV.

	5 ml-bolus		10 ml-bolus		5ml-Yogourt		ANOVA (p)
	SB	NIV	SB	NIV	SB	NIV	Interaction	Bolus size effect	Bolus texture effect	NIV effect
Number of swallows (per bolus)	2.0±0.9	2.2±1.1	2.8±1.1	2.9±1.4	2.6 ±1.2	2.4±1.1	0.39	<0.0001	0.89	0.98
Duration of swallowing (sec)	5.4±4.6	4.6±3.4	7.1±4.5	5.9±3.4	7.1±4.9	5.8±4.2	0.93	0.12	0.30	0.08
Swallowing fragmentation (respiratory events per bolus)	1.6±1.8	0.8±1.0	2.3±1.7	1.0±1.4	1.9±1.5	1.1±1.0	0.53	0.16	0.74	<0.0001
% of swallows followed by an inspiration	43.5±23.3	10.3±7.7	46.1±23.6	17.9±19.5	45.7±21.5	21.1 ±16.4	0.78	0.20	0.14	<0.0001
Borg Scale	2.4±2.2	1.2±1.6	2.7±2.2	1.1±1.5	2.9±2.4	1.7±1.5	0.89	0.80	0.36	0.0002