Table 2 Predictors of transcranial magnetic stimulation-derived active motor threshold of the corticospinal tract.

		Results of Simple Linear			Results of Within Group Stepwise		Results of Without Group Stepwise
DV is AMT	Independent variable	R	R²	p	ΔR²	p	ΔR²	p
Spatial	Stride Length (cm)	0.410	0.168	0.000214**	0.168	0.000214**
	Step Length (cm)	0.409	0.168	0.000220**
	Absolute Step Length (cm)	0.389	0.151	0.000471**
	Stride Width (cm)	0.355	0.126	0.001520**	0.058	0.021185*
Temporal	Total Double Support (%)	0.499	0.249	0.000005**	0.249	0.000005**
	Stride Time (sec)	0.486	0.236	0.000007**
	Velocity (cm/sec)	0.493	0.243	0.000005**
	Single Support (%)	0.490	0.240	0.000008**
	Cadence (steps/min)	0.440	0.194	0.000062**
	Swing Time (sec)	0.387	0.150	0.000500**
Stability	SS COP Distance (cm)	0.516	0.266	0.000002**	0.266	0.000002**	0.258	0.000003**
	DS COP Distance (cm)	0.256	0.065	0.024774*
	Stride Length CV (cm)	0.236	0.056	0.038487*

Step 1 includes only those predictors that were significantly correlated with the outcome. Variable significance in step 1 is proceeded to stepwise regression. DV: dependent variable; AMT: active motor threshold; cm: centimeter; sec: seconds; CV: coefficient of variation; SS: single support; DS: double support; COP: center of pressure; p: confidence interval *p < 0.05; **p < 0.01.

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