Table 3.
Correlation coefficients between the significant plantar pressure changes and the significant clinical characteristics changes (continuous data and ranked data) of the patients with type 2 diabetes (n = 65)
| Plantar pressure parameters | Change of BMI | Height of shoe heels | Change of HbA1c | Change of FBG | Change of cholesterol | Change of triglyceride | Change of intima-media membrane | Change of NSS | Change of ABI | Change of SCV |
|---|---|---|---|---|---|---|---|---|---|---|
| Maximum force | ||||||||||
| Meta 1 | 0.298 (0.016) | −0.003 (0.982) | 0.936 (0.000) | 0.429 (0.000) | 0.252 (0.043) | −0.105 (0.407) | 0.304 (0.014) | 0.562 (0.000) | 0.247 (0.047) | 0.941 (0.000) |
| Meta 2 | 0.496 (0.000) | −0.006 (0.964) | 0.408 (0.001) | 0.171 (0.173) | 0.372 (0.002) | 0.036 (0.773) | 0.265 (0.033) | 0.357 (0.003) | 0.201 (0.109) | 0.447 (0.000) |
| Meta 3 | 0.530 (0.000) | 0.144 (0.251) | 0.159 (0.207) | −0.055 (0.666) | 0.197 (0.115) | 0.071 (0.572) | 0.195 (0.120) | 0.450 (0.000) | 0.008 (0.950) | 0.215 (0.085) |
| Meta 4 | 0.495 (0.000) | 0.154 (0.219) | 0.150 (0.233) | −0.130 (0.303) | 0.169 (0.178) | −0.036 (0.774) | 0.109 (0.386) | 0.378 (0.002) | 0.069 (0.586) | 0.165 (0.189) |
| Maximum pressure | ||||||||||
| Meta 1 | 0.267 (0.032) | 0.031 (0.805) | 0.880 (0.000) | 0.411 (0.001) | 0.261 (0.036) | −0.069 (0.584) | 0.300 (0.015) | 0.547 (0.000) | 0.190 (0.129) | 0.887 (0.000) |
| Meta 2 | 0.502 (0.000) | 0.062 (0.622) | 0.484 (0.000) | 0.219 (0.079) | 0.361 (0.003) | 0.058 (0.647) | 0.311 (0.012) | 0.364 (0.003) | 0.203 (0.105) | 0.524 (0.000) |
| Meta 3 | 0.540 (0.000) | 0.143 (0.256) | 0.229 (0.066) | 0.011 (0.928) | 0.231 (0.064) | 0.063 (0.616) | 0.239 (0.055) | 0.395 (0.001) | 0.067 (0.599) | 0.302 (0.014) |
| Meta 4 | 0.488 (0.000) | 0.187 (0.136) | 0.228 (0.067) | −0.077 (0.541) | 0.210 (0.092) | −0.062 (0.625) | 0.162 (0.198) | 0.375 (0.002) | 0.095 (0.449) | 0.250 (0.044) |
| Impulse | ||||||||||
| Meta 3 | 0.506 (0.000) | 0.102 (0.419) | 0.191 (0.127) | −0.029 (0.816) | 0.191 (0.128) | 0.054 (0.670) | 0.175 (0.163) | 0.415 (0.001) | 0.060 (0.633) | 0.254 (0.041) |
| Medial heel | 0.467 (0.000) | 0.082 (0.515) | 0.371 (0.002) | 0.194 (0.121) | 0.366 (0.003) | −0.004 (0.974) | 0.258 (0.038) | 0.270 (0.030) | 0.012 (0.924) | 0.353 (0.004) |
| Lateral heel | 0.478 (0.000) | 0.085 (0.501) | 0.359 (0.003) | 0.129 (0.304) | 0.406 (0.001) | −0.018 (0.886) | 0.223 (0.074) | 0.341 (0.006) | −0.067 (0.597) | 0.377 (0.002) |
| Pressure-time integral | ||||||||||
| Meta 2 | 0.402 (0.001) | −0.054 (0.670) | 0.468 (0.000) | 0.239 (0.056) | 0.359 (0.003) | 0.040 (0.754) | 0.262 (0.035 ) | 0.387 (0.001) | 0.159 (0.207) | 0.517 (0.000) |
| Meta 3 | 0.444 (0.000) | 0.095 (0.452) | 0.232 (0.063) | 0.003 (0.978) | 0.175 (0.163) | 0.063 (0.618) | 0.195 (0.120) | 0.368 (0.003) | 0.083 (0.510) | 0.303 (0.014) |
| Meta 4 | 0.437 (0.000) | 0.108 (0.393) | 0.167 (0.184) | −0.086 (0.494) | 0.188 (0.134) | −0.046 (0.716) | 0.116 (0.358) | 0.290 (0.019) | 0.141 (0.264) | 0.174 (0.166) |
| Lateral heel | 0.334 (0.006) | 0.086 (0.494) | 0.221 (0.076) | 0.077 (0.540) | 0.268 (0.031) | 0.009 (0.945) | 0.144 (0.251) | 0.370 (0.002) | −0.090 (0.474) | 0.266 (0.032) |
The data was shown as correlation coefficients (P). Toe 1: The hallux; Toe 2–5: The second to the fifth toes; Meta 1–Meta 5: Each of the first to the fifth metatarsal heads; Medial heel: The medial portion of the heel; Lateral heel: The lateral portion of the heel; BMI: Body mass index; HbA1c: Hemoglobin A1c; FBG: Fasting blood glucose; Intima-media membrane: Intima-media membrane of the lower limb blood vessels; NSS: Neuropathy symptom score; ABI: Ankle-brachial index; SCV: Sensory nerve conduction velocity of the left common peroneal nerve.