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. Author manuscript; available in PMC: 2019 May 1.
Published in final edited form as: Gait Posture. 2018 Apr 12;62:510–517. doi: 10.1016/j.gaitpost.2018.04.012

Table 1.

Spearman’s rank-order correlations (rs) between clinical metrics and muscle cross-correlations (average R-value between left and right leg) for both treadmill and overground walking, controlling for the preferred walking speed of the TBI subjects.

Muscle cross-
correlations
(R-values)		 SOT DGI 6MWT
Treadmill Overground Treadmill Overground Treadmill Overground
Tibialis Anterior
  rs −0.146 −0.303 0.134 0.080 0.065 0.000
  p 0.352 0.068 0.391 0.640 0.679 1.000
Medial Gastrocnemius
  rs 0.034 −0.125 0.446 0.511 0.135 0.040
  p 0.829 0.461 0.003 0.001 0.387 0.814
Soleus
  rs 0.167 −0.036 0.184 0.304 0.069 −0.034
  p 0.284 0.833 0.238 0.067 0.661 0.843
Vastus Lateralis
  rs −0.062 −0.185 0.492 0.427 0.119 0.006
  p 0.691 0.272 0.001 0.008 0.448 0.973
Rectus Femoris
  rs 0.038 −0.174 0.371 0.092 0.238 −0.114
  p 0.811 0.304 0.014 0.587 0.124 0.503
Medial Hamstrings
  rs −0.094 0.039 0.005 0.225 0.003 −0.111
  p 0.549 0.820 0.977 0.18 0.983 0.512
All Muscles, averaged
  rs −0.037 −0.092 0.394 0.416 0.078 −0.117
  p 0.816 0.588 0.009 0.010 0.618 0.492

Abbreviations: SOT = sensory organization test composite score; DGI = dynamic gait index; 6MWT = six-minute walk test.