Skip to main content

Table 1 Electromechanical delay reliablity indices

From: Between-day reliability of electromechanical delay of selected neck muscles during performance of maximal isometric efforts

  Muscle D1 Mean (SD) D2 Mean (SD) Diff (95% CI) SEM (95% CI) ICC3,3 (95% CI) SDD
Ext R SpL -31.0 (4.3) -32.8 (6.8) -1.8 (-3.9 to 0.4) 3.4 (2.6 to 4.8) 0.79 (0.49 to 0.91) 9.9
  R TRP -37.4 (3.8) -38.7 (2.7) -1.3(-2.9 to 0.3) 2.5 (1.9 to 3.6) 0.59 (0.01 to 0.83) 7.3
  R SCM 3.3 (3.7) 3.0 (3.3) -0.3 (-2.1 to 1.5) 2.8 (2.2 to 4.1) 0.52 (-0.19 to 0.80) 8.3
  L SpL -33.1 (5.8) -35.5 (6.1) -2.4 (-4.9 to 0.2) 4.0 (3.0 to 5.7) 0.71 (0.29 to 0.88) 11.7
  L TRP -38.3 (4.5) -39.4 (4.5) -1.1 (-3.0 to 0.9) 3.0 (2.3 to 4.3) 0.71 (0.29 to 0.88) 8.9
  L SCM 2.2 (5.5) 1.4 (5.0) 0.8 (-2.9 to 1.3) 3.3 (2.5 to 4.8) 0.74 (0.38 to 0.89) 9.8
Flex R SpL -32.8 (4.8) -32.3 (4.2) 0.5 (-2.2 to 3.2) 4.2 (3.2 to 6.0) 0.23 (-0.88 to 0.68) 12.3
  R TRP 12.0(6.4) 13.9 (5.9) 1.8 (-0.9 to 4.6) 4.2 (5.2 to 6.1) 0.69 (0.25 to 0.87) 12.4
  R SCM -70.6 (4.9) -72.0 (4.4) -1.5 (-4.4 to 1.1) 4.0 (3.0 to 5.7) 0.41(-0.44 to 0.76) 11.7
  L SpL -30.2 (4.6) -30.8 (4.8) -0.6 (-2.7 to 1.6) 3.4 (2.6 to 4.9) 0.66 (0.17 to 0.86) 9.9
  L TRP 9.6 (4.4) 8.4 (5.3) -1.2 (-3.5 to 1.1) 3.6 (2.7 to 5.1) 0.64 (0.11 to 0.85) 10.5
  L SCM -69.8 (5.4) -69.5 (5.0) 0.3 (-2.4 to 3.0) 4.2 (3.2 to 6.0) 0.52 (-0.17 to 0.80) 12.3
Prot R SpL -27.5 (9.9) -27.9 (11.8) -0.4 (-6.0 to 5.1) 8.6 (6.6 to 12.5) 0.54 (-0.12 to 0.86) 25.4
  R TRP 17.1 (10.8) 20.1 (12.5) 3.0 (-2.9 to 8.9) 9.2 (7.0 to 13.2) 0.77 (0.43 to 0.91) 27.0
  R SCM -67.8 (13.9) -66.4 (16.2) 1.4 (-6.3 to 9.2) 12.0 (9.2 to 17.4) 0.54 (-0.14 to 0.81) 35.5
  L SpL -26.7 (12.3) -27.9 (18.1) -1.2 (-7.7 to 5.3) 10.1 (7.7 to 14.6) 0.73 (0.34 to 0.89) 29.8
  L TRP 18.2 (10.4) 18.0 (11.9) -0.2 (-6.7 to 6.2) 10.0 (7.7 to 14.4) 0.32 (-0.66 to 0.72) 29.5
  L SCM -68.1 (11.0) -64.2 (13.6) 3.9 (-3.3 to 11.2) 11.3 (8.6 to 16.3) 0.31 (-0.68 to 0.72) 33.2
LLB R SpL 18.8 (4.1) 19.5 (5.5) 0.7 (-1.9 to 3.4) 4.1 (3.1 to 5.9) 0.46 (-0.33 to 0.78) 12.0
  R TRP -20.2 (4.9) -19.8 (5.3) 0.4 (-2.2 to 2.9) 3.9 (3.0 to 5.6) 0.59 (-0.01 to 0.83) 11.5
  R SCM 0.7 (5.6) 1.3 (4.3) 0.5 (-2.1 to 3.1) 4.0 (3.1 to 5.8) 0.51 (-0.19 to 0.80) 11.9
  L SpL -63.0 (6.0) -62.2 (5.8) 0.8 (-2.0 to 3.6) 4.4 (3.4 to 6.3) 0.61 (0.05 to 0.84) 12.9
  L TRP -43.8 (5.8) -42.7 (4.3) 1.1 (-1.2 to 3.5) 3.7 (2.8 to 5.3) 0.64 (0.11 to 0.85) 10.9
  L SCM -58.8 (6.0) -56.4 (6.0) 2.5 (-0.2 to 5.1) 4.2 (3.2 to 6.0) 0.68 (0.22 to 0.87) 12.3
RLB R SpL -61.4 (5.2) -59.6 (3.3) 1.8 (-0.6 to 4.2) 3.8 (2.9 to 5.5) 0.39 (-0.48 to 0.75) 11.1
  R TRP -38.0 (4.6) -39.7(5.3) -1.7 (-4.0 to 0.6) 3.5 (2.7 to 5.1) 0.65 (0.15 to 0.86) 10.4
  R SCM -62.9 (6.5) -63.2 (6.3) -0.3 (-3.4 to 2.8) 4.8 (3.6 to 6.9) 0.61 (0.05 to 0.84) 14.0
  L SpL 28.9 (6.7 29.8 (5.6) 1.0 (-1.7 to 3.6) 4.1 (3.2 to 6.0) 0.71 (0.28 to 0.89) 12.2
  L TRP -18.5 (6.9) -16.9 (6.1) 1.6 (-1.2 to 4.5) 4.4 (3.4 to 6.4) 0.70 (0.27 to 0.88) 13.0
  L SCM 2.3 (5.2) 1.4 (5.0) -0.9 (-3.4 to 1.5) 3.8 (2.9 to 5.5) 0.60 (0.02 to 0.83) 11.3
  1. Ext = Extension, Flex = Flexion, Prot = Protraction, LLB = Left lateral bending, RLB = Right lateral bending,
  2. SpL = Splenius Capitis, TRP = Upper Trapezius, SCM = Sternocleidomastoid.
  3. D1 = Day 1, D2 = Day 2, SD = Standard deviation, Difference = Difference between means,
  4. CI = Confidence intervals, ICC = Intraclass correlation coefficient, SDD = Smallest detectable difference (ms)