. 2020 Dec 8;15(12):e0243133. doi: 10.1371/journal.pone.0243133

Table 3. Correlations and linear multiple regression between joint angles and spatiotemporal parameters during gait (single task and dual task) in individuals with PD and FOG.

Single Task
Correlations
		R Hip-FE(°)	L Hip-FE(°)	R Knee-FE(°)	L Knee-FE(°)	R Ankle-PD(°)	L Ankle-PD(°)
R Step Length (cm)	Correlation Coefficient	.892	.718	.843	.501	.616	.484
R Step Length (cm)	p-value	< .001	< .001	< .001	.003	< .001	.005
L Step Length (cm)	Correlation Coefficient	.852	.759	.839	.574	.525	.389
L Step Length (cm)	p-value	< .001	< .001	< .001	.001	< .001	.028
Speed (m/s)	Correlation Coefficient	.847	.742	.832	.595	.537	.392
Speed (m/s)	p-value	< .001	< .001	< .001	< .001	< .001	.027
Linear Multiple Regression
Speed (m/s)	Adjusted R Square	.708	-	.682	-	.280	-
Speed (m/s)	p-value	< .001	-	< .001	-	< .001	-
Dual Task
Correlations
R Step Length (cm)	Correlation Coefficient	.819	.652	.787	.735	.618	.507
R Step Length (cm)	p-value	< .001	< .001	< .001	< .001	< .001	.003
L Step Length (cm)	Correlation Coefficient	.839	.798	.814	.854	.645	.628
L Step Length (cm)	p-value	< .001	< .001	< .001	< .001	< .001	< .001
Speed (m/s)	Correlation Coefficient	.718	.726	.791	.789	.624	.595
Speed (m/s)	p-value	< .001	< .001	< .001	< .001	< .001	< .001
Linear Multiple Regression
Speed (m/s)	Adjusted R Square	.499	-	.612	-	.368	-
	p-value	< .001	-	< .001	-	< .001	-

Note. Joint angles are in degrees (°). The joint angles of right side were used for the linear multiple regression analysis as there were no differences between the right and left sides.

Abbreviations: R: Right; L: Left; Hip-FE: Hip flexion/extension; Knee-FE: Knee flexion/extension; Ankle-PD: Ankle plantar/dorsiflexion.