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Table 4 Within-day and between-day reliability of center of pressure (CoP) measurements

From: Effect of mandibular mobilization on electromyographic signals in muscles of mastication and static balance in individuals with temporomandibular disorder: study protocol for a randomized controlled trial

   Session 1   Session 2   Session 1 and 2  
   ICC (95% IC) SEM ICC (95% IC) SEM ICC (95% IC) SEM
Area(cm/s2) EO 0.51 (0.04 to 0.81) 0.21 0.72 (0.33 to 0.90) 0.17 0.52 (0.26 to 0.78) 0.22
EC 0.81 (0.51 to 0.94) 0.25 0.44 (-0.06 to 0.77) 0.36 0.48 (0.21 to 0.74) 0.30
VelAP(cm/s) EO 0.96 (0.88 to 0.99) 0.03 0.92 (0.73 to 0.97) 0.03 0.79 (0.58 to 0.91) 0.06
EC 0.95 (0.84 to 0.98) 0.03 0.83 (0.54 to 0.94) 0.06 0.76 (0.53 to 0.89) 0.07
VelML(cm/s) EO 0.98 (0.93 to 0.99) 0.02 0.96 (0.87 to 0.98) 0.03 0.96 (0.91to 0.98) 0.03
EC 0.94 (0.82 to 0.98) 0.04 0.92 (0.78 to 0.98) 0.04 0.82 (0.65 to 0.93) 0.06
ƒ80AP(Hz) EO 0.78 (0.45 to 0.91) 0.04 0.83 (0.56 to 0.94) 0.03 0.76 (0.56 to 0.90) 0.04
EC 0.71 (0.33 to 0.90) 0.04 0.52 (0.05 to 0.81) 0.05 0.66 (0.43 to 0.85) 0.04
ƒ80ML(Hz) EO 0.85 (0.61 to 0.94) 0.12 0.80 (0.49 to 0.92) 0.12 0.70 (0.46 to 0.86) 0.16
  EC 0.75 0.38 to 0.90) 0.12 0.50 (0.02 to 0.79) 0.14 0.57 (0.31 to 0.80) 0.15
SaEnAP EO -0.04 (-0.60 to 0.50) 0.16 0.46 (-0.05 to 0.78) 0.10 0.20 (-0.03to 0.54) 0.13
EC 0.53 (0.01 to 0.52) 0.10 0.30 (-0.21 to 0.70) 0.12 0.54 (0.27 to 0.78) 0.10
SaEnML EO 0.65 (0.21 to 0.87) 0.12 0.71 (0.34 to 0.89) 0.10 0.67 (0.44 to 0.86) 0.11
EC 0.63 (0.17 to 0.86) 0.13 0.49 (-0.03 to 0.89) 0.13 0.50 (0.22 to 0.77) 0.14
  1. AP and ML: anteroposterior and mediolateral directions; Area: CoP sway in AP and ML directions; CI: confidence interval; ƒ80: median frequency; ICC: intraclass correlation coefficient; SaEn: sample entropy; SEM: standard error of mean; V: mean velocity; EC: eyes closed; EO: eyes open.