Robotic Kinematic measures of the arm in chronic Stroke: part 2 – strong correlation with clinical outcome measures

Table 3 Correlation of kinematic and kinetic metrics with clinical measures

Measure	Device	Model	R	P
FMA-UE 0–66	S/E	linear	0.82	**
	S/E	non linear	0.88	**
	wrist	linear	0.91	**
	wrist	non linear	0.92	**
	both	linear	0.91	**
	both	non linear	0.91	**
FMA-UE 1–38	S/E	linear	0.80	**
	S/E	non linear	0.86	**
	wrist	linear	0.86	**
	wrist	non linear	0.87	**
	both	linear	0.89	**
	both	non linear	0.89	**
FMA-UE 39–66	S/E	linear	0.74	**
	S/E	non linear	0.74	**
	wrist	linear	0.43
	wrist	non linear	0.69	*
	both	linear	0.69	*
	both	non linear	0.70	*
BI	S/E	linear	0.68	**
	S/E	non linear	0.73	**
	wrist	linear	0.53	*
	wrist	non linear	0.58	*
	both	linear	0.67	**
	both	non linear	0.70	**
WMFT	S/E	linear	0.85	**
	S/E	non linear	0.89	**
	wrist	linear	0.89	**
	wrist	non linear	0.90	**
	both	linear	0.92	**
	both	non linear	0.93	**
MP (Total)	S/E	linear	0.86	**
	S/E	non linear	0.87	**
	wrist	linear	0.88	**
	wrist	non linear	0.90	**
	both	linear	0.91	**
	both	non linear	0.92	**
MP Kinematic Force Metrics	S/E	linear	0.86	**
	S/E	non linear	0.86	**
	wrist	linear	0.86	**
	wrist	non linear	0.90	**
	both	linear	0.90	**
	both	non linear	0.91	**
MP Force Transducer Metrics	S/E (combined mean force, deltaz)	linear	0.62	**
	S/E (combined mean force, deltaz)	non linear	0.66	**
	S/E (F/ E/ AB/ AD mean force)	linear	0.66	**
	S/E (F/ E/ AB/ AD mean force)	non linear	0.69	**

Note: **P < 0.001, * P < 0.05. S/E = shoulder-elbow, FMA-UE = Fugl-Meyer Assessment of Upper Extremity Motor Recovery after Stroke, BI=Barthel Index, WMFT = Wolf Motor Function Test. MP (Total) = Motor Power, correlation analysis with the Medical Research Council Motor Power score (MRC) using both kinetic metrics and all possible kinematic metrics. MP Kinematic Force Metrics = correlation model using shoulder kinetic metrics and only force derived kinematic metrics (from the movement against resistance and isometric stabilization tasks). MP Force Transducer Metrics = using only the shoulder kinetic metrics with the MRC (mean shoulder force (deltaz) or individual mean measures of shoulder abduction (AB), adduction (AD), flexion (F), and extension (E))

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