title: Effect of static foot alignment on plantar-pressure measures during running.
abstract: BACKGROUND
  Altered foot dynamics due to malalignment of the foot may change plantar-pressure properties, resulting in various kinds of overuse injuries.
  
  
  OBJECTIVE
  To assess the effect of foot characteristics on plantar-pressure-related measures such as maximum pressure, maximum pressure-time, and pressure-time integral underneath the medial aspect of the foot during running.
  
  
  METHODS
  Cross-sectional.
  
  
  METHODS
  Laboratory.
  
  
  METHODS
  8 men and 17 women.
  
  
  METHODS
  Static non-weight-bearing rear-foot and forefoot alignment and navicular drop were measured. Plantar-pressure data were collected while subjects jogged at 2.6 m/s on a treadmill. Maximum pressure, time to maximum pressure, and pressure-time integral of the medial side of the foot were extracted for data analysis. Multiple-regression analysis was used to examine the effect of arch height and rear-foot and forefoot alignment on maximum pressure and pressure-time integral in the medial side of the foot.
  
  
  RESULTS
  In the medial rear-foot and midfoot regions, only rear-foot alignment had a significant effect on the variance of maximum pressure and pressure-time integral. There were no significant difference effects in the medial forefoot region.
  
  
  CONCLUSIONS
  Rear-foot alignment was found to be a significant predictor of maximum plantar pressure and pressure-time integral in the medial rear-foot and midfoot regions. This indicates that control of rear-foot alignment may help decrease plantar pressure on the medial region of the foot, which may potentially prevent injuries associated with excessive rear-foot eversion.
authors.affiliation: Dept of Physical Education, Yonsei Univeristy, Seoul, South Korea.
authors.forename: Sae Yong
authors.initials: SY
authors.lastname: Lee
authors.forename: Jay
authors.initials: J
authors.lastname: Hertel
mesh_terms: D003430:Cross-Sectional Studies; D005260:Female; D005545:Forefoot, Human / Q000502:physiology*; D006365:Heel / Q000502:physiology*; D006801:Humans; D008297:Male; D011187:Posture / Q000502:physiology*; D011312:Pressure; D012420:Running / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology; D055815:Young Adult