Table 3.

The number of times that the metrics showed significant differences under four gait combinations* for six subjects.

Time Domain Features	Preliminary Metrics
	${\mathit{COP}}_{\mathit{x}}$	${\mathit{COP}}_{\mathit{y}}$	${\mathit{V}}_{{\mathit{COP}}_{\mathit{x}}}$	${\mathit{V}}_{{\mathit{COP}}_{\mathit{y}}}$	$\mathit{COP}$ _ $\mathit{CMP}$
Var	4/4/3/2/4/4 **	4/4/4/4/0/4	4/3/2/4/4/2	4/4/4/4/0/4	3/4/2/2/4/1
RMS	0/0/0/0/0/0	0/0/1/1/3/0	4/3/2/4/4/2	4/4/4/4/0/4	0/1/0/1/4/0
Range	4/4/2/2/4/4	4/4/4/4/1/4	4/4/1/4/4/2	4/4/4/4/0/4	2/4/0/2/4/2
	${\mathit{COM}}_{\mathit{x}}$	${\mathit{COM}}_{\mathit{y}}$	${\mathit{COM}}_{\mathit{z}}$	$\mathit{MOS}$	${\mathit{A}}_{\mathit{ANG}}$
Var	4/4/1/3/4/1	0/4/1/1/0/4	2/4/4/4/4/4	4/4/4/3/2/2	4/3/2/3/4/4
RMS	4/1/1/2/1/1	3/4/1/0/2/0	2/4/4/4/4/4	4/4/0/4/3/0	3/4/2/3/4/4
Range	4/3/1/3/4/2	1/4/1/1/0/4	2/4/4/4/4/4	4/4/4/4/4/2	3/4/2/3/4/4
	${\mathit{A}}_{{\mathit{COM}}_{\mathit{x}}}$	${\mathit{A}}_{{\mathit{COM}}_{\mathit{y}}}$	${\mathit{A}}_{{\mathit{COM}}_{\mathit{z}}}$	${\mathit{A}}_{\mathit{COM}}$
Var	4/0/1/3/3/3	0/4/4/4/4/0	3/0/1/4/4/4	1/2/1/4/4/4
RMS	4/0/1/3/3/3	0/4/4/4/4/0	3/0/1/4/4/4	3/0/0/4/4/4
Range	4/1/2/4/4/3	0/4/4/4/0/2	2/0/0/4/4/4	2/3/1/4/4/2

* All six subjects completed testing under the zero torque gait condition and four interference torque gait conditions. Four gait combinations were obtained by combining the zero torque condition without interference and four conditions with interference. ** Each element of the table represents the number of times that the metric showed significant differences under the four combinations for subject2/subject3/subject4/subject5/subject6/subject7.