TABLE 3.

Statistical analysis results of main effects and interaction effects.

Factors	Properties	F	P values
Sex	Muscle tone	32.47	< 0.001#
	Stiffness	35.25	< 0.001#
Age	Muscle tone	84.82	< 0.001#
	Stiffness	92.23	< 0.001#
Sex*Age	Muscle tone	1.42	0.245*
	Stiffness	1.20	0.304*

*Indicates Statistical Analysis of Interaction effects. ^#Indicates P value < 0.01.