Table 1 Mean, minimum, and maximum values of the median and range of amplitude of trapezius muscle activity and the median and range of motion of shoulder, head, neck, and torso postures across all participants (n = 117)
Median | Range of Amplitude/Range of Motion | |||||
|---|---|---|---|---|---|---|
Mean | Minimum | Maximum | Mean | Minimum | Maximum | |
Shoulder EMG (%MVC) | ||||||
Right Trapezius | 5.43 | 0.33 | 16.19 | 7.90 | 0.82 | 28.61 |
Left Trapezius | 4.29 | 0.29 | 18.30 | 7.91 | 0.82 | 28.61 |
Shoulder Posture (degrees) | ||||||
Right Abduction | 13.12 | -34.08 | 39.96 | 15.30 | 1.67 | 62.15 |
Left Abduction | 7.17 | -29.66 | 29.31 | 16.56 | 5.13 | 53.20 |
Right Flexion | 12.08 | -23.50 | 46.53 | 24.42 | 2.71 | 52.31 |
Left Flexion | 12.71 | -14.62 | 41.19 | 26.52 | 7.35 | 56.15 |
Right Internal Rotation | -2.33 | -28.87 | 49.83 | 44.47 | 10.47 | 77.64 |
Left Internal Rotation | 22.31 | -18.56 | 60.63 | 28.52 | 5.60 | 71.32 |
Head Posture (degrees) | ||||||
Tilt | -0.94 | -20.54 | 9.27 | 11.04 | 4.37 | 80.70 |
Flexion | 12.14 | -13.76 | 43.31 | 26.94 | 4.01 | 67.29 |
Neck Posture (degrees) | ||||||
Tilt | -0.88 | -18.43 | 8.39 | 8.47 | 3.35 | 21.80 |
Flexion | 11.49 | -34.96 | 31.64 | 15.63 | 4.34 | 47.09 |
Torso Posture (degrees) | ||||||
Tilt | -1.90 | -19.54 | 4.43 | 7.56 | 2.69 | 38.29 |
Flexion | 13.89 | -15.64 | 50.07 | 17.67 | 4.12 | 43.58 |