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Table 2 Summary of results concerning the onset angle, the amplitude of initial flexion (F1Amp), the amplitude of initial extension (E1Amp), the relaxation index (RI), the extension relaxation index (ERI), the stiffness (KF1) and the viscosity (BF1) during the first flexion.

From: The pendulum test as a tool to evaluate passive knee stiffness and viscosity of patients with rheumatoid arthritis

control nr. onset angle (°) F1amp (°) E1amp (°) RI ERI KF1a (N/rad m4) BF1a (N sec/rad m4)
1 9.9 94.4 76.5 2.0 1.62 1.51 0.018
2 10.3 100.3 98.9 2.4 2.33 1.13 0.021
3 15.7 106.7 91.1 2.0 1.71 1.90 0.020
4 11.7 98.6 62.8 1.4 0.90 1.31 0.007
5 10.9 98.1 60.0 1.4 0.87 1.05 0.005
6 13.0 94.6 68.3 1.6 1.12 1.40 0.010
7 10.3 99.0 69.9 1.8 1.43 1.28 0.015
8 18.5 102.0 80.9 1.8 1.41 1.23 0.011
9 11.6 100.1 99.0 2.1 1.70 1.06 0.020
mean 12.4 99.3 78.6 1.8 1.46 1.32 0.014
SE 1.0 1.2 5.0 0.1 0.15 0.09 0.002
patient nr.        
1 15.4 45.5 41.1 1.3 0.40 2.45 0.023
2 10.1 70.3 61.1 1.5 0.77 2.29 0.033
3 10.4 77.3 41.7 1.4 1.23 1.79 0.035
4 9.1 97.3 30.1 1.2 1.65 1.19 0.018
5 19.2 87.3 11.8 1.6 1.45 1.84 0.024
6 12.8 85.5 57.2 1.7 0.63 1.88 0.007
7 10.0 85.0 75.1 1.9 0.87 2.51 0.019
8 13.8 80.9 76.2 1.6 0.72 1.58 0.018
9 15.1 75.8 44.7 1.2 0.50 1.69 0.016
mean 12.9 78.3 48.8 1.5 0.91 1.91 0.021
SE 1.1 4.8 7.0 0.1 0.14 0.14 0.003
  1. a Parameters normalized by fifth power of body height