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Table 2 Mean (1 standard deviation) walking speed and autocorrelation coefficients P1 and P2. The MEAN value represents the average of values at normal and fast walking speeds

From: Improvement of walking speed and gait symmetry in older patients after hip arthroplasty: a prospective cohort study

    TD1 TD2 TD3 Reference group
Parameter Sex Walking speed Mean SD Mean SD Mean SD Mean SD
Walking speed [m/s] female normal 2.77 .67 3.75 .54 4.09 .53 5.06 .78
fast 3.62 .77 4.50 .69 4.83 .70 6.27 .82
male normal 3.63 .84 4.20 .47 4.62 .40 4.69 .64
fast 4.68 .76 5.30 .46 5.75 .52 5.83 .84
Autocorrelation coefficient P1 female normal .7738 .0659 .7962 .0883 .8143 .0824 .8828 .0647
fast .7604 .0980 .7848 .0988 .8064 .0891 .8771 .0863
MEAN .7671 .0820 .7905 .0936 .8104 .0858 .8800 .0755
male normal .6704 .1190 .7350 .1260 .7886 .1246 .9031 .0613
fast .7214 .1166 .7597 .1125 .7963 .1037 .8882 .0639
MEAN .6959 .1178 .7474 .1193 .7925 .1142 .8957 .0626
Autocorrelation coefficient P2 female normal .9007 .0604 .9002 .0669 .9120 .0577 .9094 .0680
fast .8983 .0776 .8904 .1005 .9003 .0757 .9054 .0888
MEAN .8995 .0690 .8953 .0837 .9061 .0667 .9074 .0784
male normal .8969 .0673 .9174 .0538 .9190 .0564 .9166 .0700
fast .9144 .0485 .9198 .0466 .9223 .0572 .9337 .0510
MEAN .9056 .0579 .9186 .0502 .9206 .0568 .9251 .0605
  1. P1 first dominant peak of the acceleration signal, P2 second dominant peak of the acceleration signal, SD standard deviation
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