Noninvasive Evaluation of the Biomechanical Accommodations to Bolus Volume during Human Swallowing

Table 3

Correlation coefficient between hyoid movement and tongue pressure among different volumes.

Time points on the laryngeal waveform	Event on the tongue pressure	r (p)
		5 ml	10 ml	15 ml
T2	Ch. 1 TPon	0.329 (0.045)	0.331 (0.047)	0.520 (0.001)
	Ch. 2 TPon	0.361 (0.020)	0.361 (0.021)	0.377 (0.024)
	Ch. 3 TPon	0.674 (<0.001)	0.589 (<0.001)	0.139 (0.406)
	Ch. 4 TPon	0.415 (0.039)	0.489 (0.002)	0.420 (0.037)
	Ch. 5 TPon	0.344 (0.022)	0.462 (0.002)	0.430 (0.006)
T4	Ch. 1 TPmax	0.497 (0.004)	0.608 (<0.001)	0.619 (<0.001)
	Ch. 2 TPmax	0.455 (0.008)	0.426 (0.006)	0.577 (<0.001)
	Ch. 3 TPmax	0.482 (0.003)	0.541 (<0.001)	0.559 (<0.001)
	Ch. 4 TPmax	0.436 (0.008)	0.628 (<0.001)	0.643 (<0.001)
	Ch. 5 TPmax	0.466 (0.006)	0.461 (0.003)	0.470 (0.003)
T5	Ch. 1 TPoff	0.748 (<0.001)	0.805 (<0.001)	0.544 (<0.001)
	Ch. 2 TPoff	0.658 (<0.001)	0.613 (<0.001)	0.548 (<0.001)
	Ch. 3 TPoff	0.701 (<0.001)	0.656 (<0.001)	0.657 (<0.001)
	Ch. 4 TPoff	0.777 (<0.001)	0.715 (<0.001)	0.563 (<0.001)
	Ch. 5 TPoff	0.625 (<0.001)	0.727 (<0.001)	0.562 (<0.001)

Values are given as r (p). Ch., channel. TPo_n, onset of tongue pressure; TP_max, time of maximum tongue pressure, TP_off, offset of tongue pressure; T2, onset of hyoid rapid movement; T4, onset of stationary phase of the hyoid; T5, offset of stationary phase of the hyoid. Values shown in bold text in the bracket are statistically significant.