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Table 2 Statistical comparison between the descriptive parameters of the mech curves of the hand and foot.

From: Synchrony of hand-foot coupled movements: is it attained by mutual feedback entrainment or by independent linkage of each limb to a common rhythm generator?

  segment coupled with f r (Hz) γ (s-1) R 2 comparison
isodirectional association hand unloaded alone 2.542 ± 0.048 6.882 ± 0.623 0.874  
   foot unloaded 2.496 ± 0.054 7.305 ± 0.716 0.856 F(4,264) = 0.25
   foot loaded 2.517 ± 0.064 7.060 ± 0.838 0.815 p = 0.91
  foot unloaded alone 3.272 ± 0.124 12.510 ± 1.701 0.830  
   hand unloaded 3.320 ± 0.118 12.650 ± 1.594 0.855 F(4,264) = 0.24
   hand loaded 3.193 ± 0.118 11.000 ± 1.561 0.810 p = 0.92
  hand loaded alone 1.314 ± 0.041 3.332 ± 0.340 0.872 F(2,176) = 0.40
   foot unloaded 1.279 ± 0.044 2.937 ± 0.346 0.845 p = 0.67
  foot loaded alone 1.464 ± 0.045 2.549 ± 0.344 0.851 F(2,176) = 0.22
   hand unloaded 1.480 ± 0.044 2.852 ± 0.342 0.864 p = 0.80
antidirectional association hand unloaded alone 2.206 ± 0.168 4.023 ± 1.322 0.500  
   foot unloaded 2.630 ± 0.370 6.977 ± 2.975 0.489 F(4,174) = 0.74
   foot loaded 2.638 ± 0.487 8.298 ± 4.485 0.404 p = 0.56
  foot unloaded alone 5.113 ± 3.396 47.72 ± 67.82 0.550  
   hand unloaded 5.648 ± 5.649 50.68 ± 107.4 0.458 F(4,174) = 0.55
   hand loaded 3.449 ± 1.363 18.03 ± 16.99 0.343 p = 0.70
  hand loaded alone 1.213 ± 0.046 3.635 ± 0.506 0.766 F(2,116) = 1.43
   foot unloaded 1.138 ± 0.040 2.687 ± 0.379 0.799 p = 0.24
  foot loaded alone 1.441 ± 0.065 4.876 ± 0.828 0.691 F(2,116) = 0.12
   hand unloaded 1.407 ± 0.058 4.396 ± 0.689 0.719 p = 0.89
  1. Comparison was drawn trough the extra sum-of-squares F test on f r (resonance frequency) and γ (damping coefficient). Direction of movement association is indicated in col.1, moving segment in col. 2, coupling modality in col. 3. Col. 4 and 5: mean values ± SE of f r and γ . Col. 6: coefficient of correlation R2 with the pendulum equation. Col. 7: F and p values of the comparisons.