Table 6 Standard error of measurement (SEM (mV)), standard error of measurement in percent (SEM% (%)), minimal detectable change (MDC (mV)) and minimal detectable change in percent (MDC% (%)) of the absolute and normalized root mean square values of the left and right trapezius descendens surface electromyography during standardized box lifting
| Â | Trapezius | |||||||
|---|---|---|---|---|---|---|---|---|
Absolute sEMG | Normalised sEMG | |||||||
Lifting condition | SEM (mV) | SEM % (%) | MDC (mV) | MDC % (%) | SEM (mV) | SEM % (%) | MDC (mV) | MDC % (%) |
Table to Table 3 kg | ||||||||
 Short reaching distance | ||||||||
  Left | 33.4 | 52.9 | 92.5 | 146.6 | 6.1 | 58.4 | 17.0 | 162.0 |
  Right | 16.1 | 21.4 | 44.5 | 59.3 | 4.0 | 36.1 | 11.4 | 100.0 |
 Long reaching distance | ||||||||
  Left | 44.7 | 55.3 | 123.8 | 153.3 | 7.4 | 57.2 | 20.4 | 158.5 |
  Right | 26.3 | 30.1 | 73.0 | 83.5 | 5.3 | 40.6 | 14.8 | 112.5 |
 Trunk rotation | ||||||||
  Left | 43.0 | 68.9 | 119.2 | 190.9 | 7.2 | 70.4 | 19.9 | 195.2 |
  Right | 23.4 | 27.4 | 64.9 | 76.1 | 5.2 | 41.4 | 14.3 | 114.7 |
Table to Table 15Â kg | ||||||||
 Short reaching distance | ||||||||
  Left | 78.3 | 57.0 | 216.9 | 157.9 | 9.5 | 44.2 | 26.4 | 122.4 |
  Right | 42.7 | 26.2 | 118.3 | 72.7 | 9.3 | 39.0 | 25.7 | 108.1 |
 Long reaching distance | ||||||||
  Left | 89.9 | 43.0 | 249.2 | 119.1 | 15.6 | 48.2 | 43.1 | 133.5 |
  Right | 62.8 | 25.6 | 174.0 | 71.0 | 12.1 | 33.5 | 33.7 | 92.8 |
 Trunk rotation | ||||||||
  Left | 69.3 | 49.9 | 192.0 | 138.3 | 12.9 | 61.3 | 35.6 | 169.9 |
  Right | 46.8 | 23.5 | 129.7 | 65.0 | 18.3 | 59.0 | 50.6 | 163.4 |
Table to Table 30Â kg | ||||||||
 Short reaching distance | ||||||||
  Left | 135.0 | 49.6 | 374.1 | 137.5 | 20.6 | 50.5 | 57.1 | 139.9 |
  Right | 86.2 | 27.5 | 238.9 | 76.3 | 13.3 | 29.3 | 36.8 | 81.1 |
Floor to Table 3Â kg | ||||||||
 Short reaching distance | ||||||||
  Left | 35.5 | 50.9 | 98.4 | 141.0 | 6.2 | 53.5 | 17.1 | 148.2 |
  Right | 24.8 | 31.7 | 68.8 | 87.9 | 3.6 | 32.2 | 10.1 | 89.1 |
 Long reaching distance | ||||||||
  Left | 37.4 | 44.8 | 103.5 | 124.2 | 7.4 | 54.7 | 20.6 | 151.7 |
  Right | 28.5 | 33.8 | 79.0 | 93.7 | 5.2 | 41.1 | 14.5 | 113.8 |
 Trunk rotation | ||||||||
  Left | 33.7 | 51.2 | 93.5 | 141.9 | 5.5 | 52.0 | 15.1 | 144.3 |
  Right | 27.3 | 30.7 | 75.7 | 85.1 | 4.3 | 33.8 | 11.8 | 93.7 |
Floor to Table 15Â kg | ||||||||
 Short reaching distance | ||||||||
  Left | 60.7 | 38.3 | 168.2 | 106.2 | 13.3 | 51.8 | 36.9 | 143.5 |
  Right | 37.1 | 21.0 | 102.8 | 58.2 | 12.3 | 45.9 | 34.1 | 127.3 |
 Long reaching distance | ||||||||
  Left | 65.2 | 32.8 | 180.7 | 91.0 | 14.3 | 45.9 | 39.7 | 127.3 |
  Right | 47.4 | 20.6 | 131.4 | 57.1 | 22.2 | 61.6 | 61.6 | 170.7 |
 Trunk rotation | ||||||||
  Left | 58.4 | 35.0 | 161.8 | 97.1 | 11.3 | 42.6 | 31.2 | 118.0 |
  Right | 54.4 | 25.1 | 150.8 | 69.4 | 14.4 | 43.0 | 39.9 | 119.2 |
Floor to Table 30Â kg | ||||||||
 Short reaching distance | ||||||||
  Left | 128.2 | 40.0 | 355.3 | 110.8 | 19.7 | 39.7 | 54.5 | 110.0 |
  Right | 71.2 | 22.3 | 197.5 | 61.8 | 24.0 | 49.5 | 66.6 | 137.1 |