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Table 1 Statistical analysis of the transition period of the unassisted period

From: Gait variability following abrupt removal of external stabilization decreases with practice in incomplete spinal cord injury but increases in non-impaired individuals

Metric Repeated Measures ANOVA Friedman’s test
GG p-value p-value Significant pairs p-value Χ2 p-value Significant pairs p-value
iSCI
 COM speed mean   0.576       
 COM speed variability      10.733 0.030 N1 < T1 0.030
 COM excursion mean      8.267 0.082   
 COM excursion variability      14.333 0.006 N1 < T1 0.002
 Step width mean 0.11        
 Step width variability      14.533 0.006 N1 < T1 0.005
N1 < T2 0.030
 Hip abductor activity   0.240       
Non-impaired
 COM speed mean   0.019 none      
 COM speed variability      9.267 0.055   
 COM excursion mean   0.468       
 COM excursion variability      13.533 0.009 N1 < T2 0.030
     N1 < T3 0.012
 Step width mean   0.029 none      
 Step width variability      1.867 0.760   
 Hip abductor activity   < 0.0005 N1 > N2 0.048     
  T1 > T3 0.012     
  T1 > N2 0.005     
  T2 > N2 0.001     
  1. Greenhouse-Geisser (GG) correction was used when sphericity assumption was violated. Friedman’s nonparametric tests were used when normality assumptions were violated. Significant effects shown in bold. N1–2: Null 1 and 2 trials; T1–3: Transition 1–3 trials