Normal parameters for diagnostic transcranial magnetic stimulation using a parabolic coil with biphasic pulse stimulation

Table 3 The difference between APB and EDB—MEP latencies in anthropometric measurements

Parameters	MEP latency (ms)	Age < 40 years old	Age ≥ 40 years old	p-value
APB	120% MT	21.82 ± 1.54	21.71 ± 1.42	0.797
	140% MT	21.27 ± 1.56	21.05 ± 1.32	0.605
EDB	120% MT	37.46 ± 3.07	36.80 ± 2.67	0.543
	140% MT	36.55 ± 2.58	36.36 ± 2.57	0.841
		Height < 160 cm	Height ≥ 160 cm	p-value
APB	120% MT	21.02 ± 1.25	22.45 ± 1.32	< 0.001*
	140% MT	20.33 ± 1.04	21.94 ± 1.33	< 0.001*
EDB	120% MT	36.46 ± 2.16	38.26 ± 3.56	0.150
	140% MT	35.93 ± 2.05	37.33 ± 3.07	0.152
		Arm length < 65 cm	Arm length ≥ 65 cm	p-value
APB	120% MT	21.29 ± 1.31	22.24 ± 1.48	0.022*
	140% MT	20.56 ± 1.24	21.77 ± 1.39	0.002*
		Leg length < 85 cm	Leg length ≥ 85 cm	p-value
EDB	120% MT	36.68 ± 2.24	38.02 ± 3.74	0.234
	140% MT	36.02 ± 2.24	37.29 ± 2.95	0.205

MEP motor evoked potentials, APB abductor pollicis brevis, EDB extensor digitorum brevis, latency values reported by Mean ± SD, *statistic significant (p < 0.05)

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