Table 2.

MEP latency at anterior, central and posterior stimulation sites for each muscle.

		Latency (ms)					Post-hoc pairwise comparison (corrected p)
	n	Anterior	Central	Posterior	p	Effect size (W)	Anterior-central	Anterior-posterior	Central-posterior
Vastus Medialis	10	24.3 (1.6)*	23.5 (1.5)	23.5 (1.7)	0.03	0.356	0.03	0.22	>1
Rectus Femoris	12	22.4 (2.6)*	20.7 (2.3)*	20.8 (1.8)	0.002	0.528	0.001	0.02	>1
Vastus Lateralis	10	24.3 (2.7)*	22.6 (2.5)*	23.1 (3)	0.006	0.515	0.02	0.03	>1
Medial Hamstring	10	25.7 (1.7)	24.2 (3.4)	25.7 (4.5)	0.20	0.160	–	–	–
Lateral Hamstring	10	26.3 (2)	26.0 (1.9)	25.8 (3)	0.67	0.040	–	–	–
Medial Gastrocnemius	11	36.3 (6.1)	33.8 (3.3)*	32.5 (3.5)	0.04	0.298	0.25	0.06	0.16
Lateral Gastrocnemius	11	33.1 (3.5)	32.1 (2.7)	32.2 (2.6)	0.31	0.107	–	–	–

Latency data are median (interquartile range). Main effect p was obtained from Friedman’s test. Post-hoc p were obtained from Wilcoxon signed-rank tests. Effect size is Kendall’s coefficient of concordance.

MEP, motor evoked potential.

^*Different from latency of MEP evoked from stimulation at posterior stimulation sites.