Optimal Approaches for Measuring Tongue-Pressure Functional Reserve

Table 1

Pearson’s correlations between different measures of functional reserve: maximum isometric pressure and age.

Functional reserve measure	Unit of measurement	Maximum isometric pressure (MIP)		Age
		Pearson’s correlation	Significance (2-tailed)	Pearson’s correlation	Significance (2-tailed)
MIP minus maximum water swallow pressures	mm Hg	.814	.000	−.304	.007
	% MIP	.314	.005	−.104	.368
MIP minus mean water swallow pressures	mm Hg	.910	.000	−.359	.001
	% MIP	.320	.005	−.107	.354
MIP minus maximum regular effort saliva swallow pressures	mm Hg	.796	.000	−.250	.031
	% MIP	.453	.000	−.042	.716
MIP minus mean regular effort saliva swallow pressures	mm Hg	.899	.000	−.312	.006
	% MIP	.493	.000	−.078	.500
Maximum effortful minus maximum regular effort saliva swallow pressures	mm Hg	.285	.013	n/a	n/a
Maximum effortful minus mean regular effort saliva swallow pressures	mm Hg	.325	.004	n/a	n/a

Correlations with 𝑅 > 0.4 are shown in bold.