An exploratory study investigating the effect of foot type and foot orthoses on gluteus medius muscle activity

Table 4 Electromyographic (EMG) values. All values are % of MVIC

EMG variable	Baseline (n = 50)			Follow-up (n = 50)			Mean Change (95% CI)	P value
EMG variable	mean	SD	95% CI	mean	SD	95%CI	Mean Change (95% CI)	P value
Mean amplitude	9.07	6.79	7.14 to 11.00	9.06	5.56	7.48 to 10.64	−0.01 (−1.63 to 1.62)	0.99
Peak amplitude	18.67	13.25	14.90 to 22.43	19.04	12.87	15.38 to 22.69	0.37 (−2.67 to 3.41)	0.81
Minimum amplitude	2.17	2.07	1.58 to 2.76	2.42	1.73	1.92 to 2.91	0.25 (−0.33 to 0.82)	0.39
Peak to peak amplitude	16.50	12.51	12.94 to 20.05	16.62	12.52	13.06 to 20.18	0.12 (−2.68 to 2.93)	0.93

MVIC Maximum voluntary isometric contraction, SD Standard deviation, 95%CI 95% confidence interval

ISSN: 1471-2474