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. Author manuscript; available in PMC: 2011 Mar 1.

Published in final edited form as: Ann Otol Rhinol Laryngol. 2010 Jun;119(6):369–376. doi: 10.1177/000348941011900602

Table 1.

Summary data. Values are presented as mean ± standard deviation.

		Neutral	Head turn		Chin tuck

Region	Parameter	Mean	Mean	P-value	Mean	P-value
Velopharynx	P_max (mmHg)	169 ± 50	170 ± 41	0.914	163 ± 57	0.688
	Closure Duration (s)	0.79 ± 0.13	0.91 ± 0.22	0.016^*	0.85 ± 0.15	0.182
	Rise rate (mmHg/s)	865 ± 202	848 ± 241	0.889	805 ± 247	0.545

Tongue base	P_max (mmHg)	306 ± 163	276 ± 94	0.938	252 ± 77	0.392
	High Pressure Duration (s)	0.67 ± 0.16	0.75 ± 0.25	0.276	0.62 ± 0.19	0.4
	Rise Rate (mmHg/s)	1576 ± 598	1793 ± 1856	0.757	1239 ± 438	0.297

UES	P_pre(mmHg)	227 ± 100	118 ± 60	0.017^*	154 ± 118	0.216
	P_post(mmHg)	239 ± 78	256 ± 72	0.497	196 ± 56	0.037^*
	Opening Duration (s)	0.85 ± 0.16	0.93 ± 0.21	0.18	0.89 ± 0.22	0.454
	P_min(mmHg)	−5 ± 9	−10 ± 14	0.211	0 ± 8	0.256

Pharynx	Total Swallow Duration (s)	1.03 ± 0.16	1.02 ± 0.20	0.907	0.99 ± 0.18	0.616

Asterisks denote significant p-values