Skip to main content

Table 2 Reliability scores of isometric pronator and supinator muscle strength, peak plantar pressures and muscle activities

From: Reliability of isometric subtalar pronator and supinator strength testing

  Day 1    Day 2    Reliability Learning effects
  Mean 1 SD 1 Het_R2 Mean 2 SD 2 Het_R2 RMSE MDC (abs) MDC % Bias (abs) LoA (abs) LoA (%) t-test (P-Value)
Pronation (no FB)              
Pronator PT (Nm) 17.5 2.7 0.22 18.5 2.6 0.06 1.0 2.9 16.2 (-0.9) 3.5 19.6 <0.05
PP med FF (kPa) 54.3 16.1 0.22 59.2 15.5 0.00 6.6 18.2 32.3 (-4.9) 23.9 42.1 0.17
IEMG PL (%) 134.9 52.8 0.14 129.5 48.4 0.13 14.4 39.9 30.3 41.4 81.1 61.4 0.64
IEMG TA (%) 114.0 27.3 0.18 111.3 26.7 0.11 7.5 20.9 18.5 2.7 19.1 33.2 0.59
Pronation (FB)              
Pronator PT (Nm) 19.0 2.4 0.00 19.1 2.4 0.06 0.8 2.3 11.9 (-0.1) 3.4 17.7 0.76
PP med FF (kPa) 59.0 18.3 0.03 62.3 21.5 0.12 6.1 17.0 28.1 (-3.3) 21.6 35.6 0.30
IEMG PL (%) 130.4 41.6 0.13 129.6 48.4 0.13 13.6 37.6 28.9 0.8 65.7 50.5 0.93
IEMG TA (%) 108.0 21.7 0.00 105.0 20.0 0.00 6.8 18.9 17.7 3.0 19.1 17.9 0.25
Supination (no FB)              
Supinator PT (Nm) 13.3 5.7 0.07 14.8 6.1 0.12 1.0 2.81 20.0 2.4 4.6 32.9 <0.05
PP lat. FF (kPa) 103.3 39.7 0.03 109.1 31.8 0.02 10.2 28.2 26.6 (-5.5) 34.2 32.2 0.22
IEMG PL (%) 80.0 54.7 0.45 75.5 34.7 0.32 10.9 30.1 38.7 0.8 61.5 79.1 0.68
IEMG TA (%) 39.0 25.3 0.46 37.9 20.3 0.26 5.5 15.2 39.6 0.6 27.5 71.6 0.99
Supination (FB)              
Supinator PT (Nm) 14.7 5.5 0.22 15.4 5.6 0.03 0.8 2.2 14.9 (-0.6) 3.9 26.0 0.17
PP lat. FF (kPa) 126.5 33.7 0.02 128.0 30.9 0.00 9.0 25.0 19.6 (-1.6) 17.7 27.3 0.74
IEMG PL (%) 82.6 41.6 0.17 83.3 40.3 0.26 11.2 31.0 37.4 24.2 47.4 57.1 0.91
IEMG TA (%) 32.9 22.6 0.44 32.8 17.2 0.27 3.9 10.9 32.9 (-0.1) 22.1 67.2 0.97
  1. Legend: SD, standard deviation; MDC, minimum detectable change; MDC %, minimum detectable change as a percentage of session means; LoA, limits of agreement; Het_R2, Index of heteroscedasticity, FB, feedback; PT, peak torque; PP med. /lat. FF, peak plantar pressure under medial/lateral forefoot; IEMG, integrated EMG; PL, peroneus longus muscle; TA, tibialis anterior muscle.