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Table 5 Electromyographic (EMG) variables by orthotic usage. All values are % of MVIC. Values are means (standard deviations) unless otherwise stated

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

EMG variable

< 112 h orthotic usage (n = 25)

≥112 h orthotic usage (n = 25)

Adjusted mean difference (95% CI)

P value

Baseline

Follow-up

Baseline

Follow-up

Mean amplitude

11.31 (8.41)

9.28 (6.55)

6.83 (3.59)

8.84 (4.92)

1.93 (−0.79 to 4.64)

0.16

Peak amplitude

23.06 (16.23)

20.06 (16.10)

14.27 (7.40)

18.01 (8.76)

4.08 (−1.72 to 9.89)

0.16

Minimum amplitude

2.68 (2.63)

2.37 (1.97)

1.66 (1.16)

2.46 (1.50)

0.50 (−0.42 to 1.42)

0.28

Peak to peak amplitude

20.38 (15.45)

17.69 (15.75)

12.61 (7.00)

15.54 (8.34)

3.57 (−1.88 to 9.02)

0.19

  1. MVIC Maximum voluntary isometric contraction, 95%CI 95% confidence interval