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Table 6 Mean values for main psychophysiological measures (Psychophysiological measures)

From: Muscle activity and acute stress in fibromyalgia

 

FM

(n = 51)

Control

(n = 31)

p-value

%EMG (%)

 Mean (SD)

2.2 (1.4)

1.0 (0.5)

< 0.001

 Median [Min, Max]

1.8 [0.3, 7.3]

0.9 [0.3, 2.6]

 

EMG Rest Time (%)

 Mean (SD)

26.7 (19.9)

47.2 (16.4)

< 0.001

 Median [Min, Max]

25.6 [0.4, 79.5]

49.0 [13.1, 74.3]

 

Pain (NRS 0–10)

 Mean (SD)

3.6 (2.2)

0.1 (0.5)

< 0.001

 Median [Min, Max]

3.7 [0.0, 8.5]

0.0 [0.0, 2.5]

 

Stress (NRS 0–10)

 Mean (SD)

3.5 (2.4)

1.4 (1.4)

< 0.001

 Median [Min, Max]

3.3 [0.0, 9.3]

1.3 [0.0, 6.3]

 
  1. FM Fibromyalgia patients, SD standard deviation, NRS Numerical rating scale, %EMG Normalized surface electromyography