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Table 2 Correlations between the Foot Posture Index score and foot kinematics

From: Relationships between the Foot Posture Index and foot kinematics during gait in individuals with and without patellofemoral pain syndrome

  PFPS group Control group
  r value p value r value p value
Magnitude of peak angles     
   Rearfoot eversion relative to laboratory 0.300 0.155 0.214 0.410
   Rearfoot eversion relative to tibia 0.167 0.435 0.230 0.374
   Forefoot dorsiflexion 0.031 0.886 -0.188 0.470
   Forefoot abduction 0.502* 0.013 0.168 0.520
Timing of peak angles     
   Rearfoot eversion relative to laboratory -0.440* 0.031 0.088 0.736
   Rearfoot eversion relative to tibia -0.052 0.811 0.082 0.755
   Forefoot dorsiflexion -0.172 0.420 -0.321 0.209
   Forefoot abduction 0.239 0.260 -0.327 0.200
Range of motion     
   Rearfoot eversion relative to laboratory 0.135 0.528 0.614** 0.009
   Rearfoot eversion relative to tibia 0.026 0.903 -0.122 0.640
   Forefoot dorsiflexion -0.281 0.183 0.215 0.408
   Forefoot abduction -0.340 0.104 0.122 0.641
  1. * p < 0.05
  2. ** p < 0.01
  3. PFPS = patellofemoral pain syndrome
  4. Positive value = more pronated foot as measured by the FPI associated with greater peak magnitude, delayed peak timing and greater range of motion.