Analysis on Muscle Forces of Extrinsic Finger Flexors and Extensors in Flexor Movements with sEMG and Ultrasound

Table 4

Features of the sEMG of each muscle (μV).

Actions (duration = 2 s)	FDS			FDP			ED
	Peak absolute	iEMG	RMS	Peak absolute	iEMG	RMS	Peak absolute	iEMG	RMS
Initial position	5.78 ± 1.25	392.66 ± 59.51	3.63 ± 0.38	8.65 ± 0.60	768.45 ± 39.40	7.56 ± 0.33	45.86 ± 5.04	3541.86 ± 394.17	35.55 ± 4.54
Resting position	2.18 ± 0.09	208.56 ± 5.73	2.09 ± 0.05	8.31 ± 0.12	794.41 ± 6.67	7.94 ± 0.08	8.61 ± 1.16	787.07 ± 121.09	7.71 ± 1.43
Action 2	2.64 ± 0.68	193.40 ± 30.43	1.95 ± 0.30	7.82 ± 1.80	661.13 ± 133.95	6.64 ± 1.35	29.45 ± 7.96	2011.46 ± 385.7	20.90 ± 3.77
Action 3	3.74 ± 0.86	226.07 ± 22.37	2.13 ± 0.24	10.38 ± 0.50	812.50 ± 52.10	8.19 ± 0.54	26.41 ± 2.76	1756.06 ± 119.08	17.55 ± 0.96
Action 4	5.88 ± 0.60	343.21 ± 34.07	3.58 ± 0.32	11.64 ± 1.89	740.64 ± 49.43	7.57 ± 0.57	19.84 ± 4.53	1136.43 ± 128.27	11.74 ± 1.47
Action 5	7.38 ± 0.46	478.93 ± 24.58	4.98 ± 0.24	12.38 ± 0.25	836.50 ± 56.96	8.50 ± 0.59	19.28 ± 3.73	1188.94 ± 258.51	12.19 ± 2.70