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Table 3 Minimum number of strides for proper computation of Ad1AP and Ad2V

From: Recommended number of strides for automatic assessment of gait symmetry and regularity in above-knee amputees by means of accelerometry and autocorrelation analysis

  AMP CTRL P
Excluding initial and final 1500 samples in autocorrelation sequence    
   Min. number of strides (Ad1AP) 2.21 ± 0.231 2.03 ± 0.212 0.26
   Min. number of strides (Ad2V) 3.57 ± 0.441 3.43 ± 0.422 0.49
All samples in autocorrelation sequence    
   Min. number of strides (Ad1AP) 15.68 ± 2.003 25.71 ± 1.853 0.0014
   Min. number of strides (Ad2V) 20.81 ± 1.764 33.78 ± 1.994 0.0033
  1. AMP - amputees; CTRL - control subjects. Two cases were considered: acceleration signals analyzed excluding initial and final portions (upper part of the table), and also including those signal portions (lower part of the table). Reported values are mean ± standard error (SE).
  2. 1 paired t-test: P = 0.0029; 2 P = 0.0009; 3 P = 0.0001; 4 P = 0.0001