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Table 2 Correlations of functional measures with muscle characteristics in PAD patients (n = 26)

From: Walking performance is positively correlated to calf muscle fiber size in peripheral artery disease subjects, but fibers show aberrant mitophagy: an observational study

  Pearson correlation coefficients
(Prob > |r| under H0: Rho = 0, number of observations)
6-min walk distance (m) 4-min walking velocity, normal-paced (m/s) 4-min walking velocity, fastest-paced (m/s)
r value P value r value P value r value P value
% Type I 0.0067 0.975 0.1422 0.488 0.0785 0.703
% Type IIa −0.0539 0.798 −0.2054 0.314 −0.2433 0.231
% Type IIa/IIx 0.0456 0.829 0.0210 0.919 0.1435 0.485
Min. feret, Type I 0.3175 0.122 0.4940 0.010 0.4944 0.010
Min. feret, Type II 0.2676 0.196 0.4317 0.028 0.3713 0.062
Min. feret, average 0.3121 0.129 0.4804 0.013 0.4137 0.036
Lectin/fibera 0.0537 0.813 −0.0208 0.925 −0.0783 0.723
% Fibers with cavities in SDHa −0.1991 0.460 0.4426 0.086 0.0993 0.714
PGC1α mRNAa −0.1025 0.686 0.0832 0.743 0.1580 0.531
CREB mRNAa 0.0750 0.768 −0.2533 0.310 −0.2675 0.283
CTRC1 mRNAa 0.0431 0.871 −0.2346 0.349 −0.2495 0.318
HIF1α mRNAa 0.2072 0.409 −0.2480 0.321 −0.1937 0.441
  1. Italicized text indicates significance (P < 0.05)
  2. an = 18