Skip to main content

Table 4 Normalized surface electromyography results as percentage (Psychophysiological measures)

From: Muscle activity and acute stress in fibromyalgia

 

FM

(n = 51)

Control

(n = 31)

p-value

Trapezius, left

 Mean (SD)

1.6 (1.7)

0.6 (0.5)

< 0.001

 Median [Min, Max]

1.0 [0.2, 8.0]

0.4 [0.1, 2.0]

 

Trapezius, right

 Mean (SD)

1.5 (1.2)

0.7 (0.5)

< 0.001

 Median [Min, Max]

1.0 [0.2, 5.5]

0.7 [0.1, 2.1]

 

Erector spinae, left

 Mean (SD)

4.0 (3.3)

2.2 (1.8)

0.002

 Median [Min, Max]

3.0 [0.1, 12.8]

1.6 [0.4, 7.9]

 

Erector spinae, right

 Mean (SD)

4.1 (4.2)

2.0 (1.2)

0.001

 Median [Min, Max]

2.4 [0.5, 19.1]

1.7 [0.6, 5.1]

 

Biceps brachii, left

 Mean (SD)

1.0 (0.8)

0.4 (0.3)

< 0.001

 Median [Min, Max]

0.8 [0.2, 3.3]

0.4 [0.1, 1.4]

 

Biceps brachii, right

 Mean (SD)

1.0 (0.8)

0.4 (0.4)

< 0.001

 Median [Min, Max]

0.8 [0.1, 3.9]

0.4 [0.1, 2.0]

 
  1. FM Fibromyalgia patients, SD standard deviation