Fatigue and Muscle Strength Involving Walking Speed in Parkinson’s Disease: Insights for Developing Rehabilitation Strategy for PD

Table 2

Correlation analysis between variables in the two groups.

Correlation	PD						HC
	MFI		MVC		Speed		MFI		MVC		Speed
	CFI	−0.24	0.25					0.17	0.42
GFI	−0.23	0.27					−0.02	0.92
PFI	−0.13	0.52					−0.06	0.76
VA			0.56	<0.01	−0.07	0.73			0.38	0.06	0	0.99
TW			0.74	<0.01	0.28	0.19			0.71	<0.01	0.18	0.40
MVC					0.16	0.45					−0.14	0.51

PD, Parkinson’s disease; HC, healthy control; MFI, Multidimensional Fatigue Inventory; CFI, central fatigue index; PFI, peripheral fatigue index; GFI, general fatigue index; VA, activation level; TW, twitch force; MVC, maximum voluntary contraction.
^*Significant correlation, .