Table 2:

Stimulation pulse-widths for each subject. The ‘Baseline’ values were those used for steady state erect sitting while the ‘High’ values were the maximum PWs applied whenever the trunk crossed the flexion threshold in all directions. A dash (−) entry implies that electrodes were not implanted to activate the muscle in that subject.

Muscle	Side	S-1		S-2		S-3		S-4		S-5
		Baseline	High	Baseline	High	Baseline	High	Baseline	High	Baseline	High
Erector Spinae	Right	25	100	19	250	0	100	29	205	10	150
	Left	25	250	4	150	0	70	12	205	8	150
Quadratus Lumborum	Right	25	250	5	150	0	250	105	250	80	250
	Left	35	50	5	120	0	90	10	175	8	250
Iliopsoas	Right	-	-	0	125	-	-	-	-	8	250
	Left	-	-	0	105	-	-	-	-	1	250
Gluteus Maximus	Right	35	250	5	250	0	60	20	250	3	250
	Left	40	250	3	250	0	60	1	250	8	250
Semimembranosus	Right	12	250	-	-	6	45	-	-	-	-
	Left	40	250	-	-	-	-	-	-	-	-
Posterior Adductors	Right	25	250	5	250	2	40	-	-	1	250
	Left	25	200	2	250	7	150	-	-	15	250