title: Factors affecting center of pressure in older adults: the Framingham Foot Study.
abstract: BACKGROUND
  Although aberrant foot movement during gait has been associated with adverse outcomes in the lower extremities in clinical patients, few studies have analyzed population differences in foot function. The purpose of this study was to assess demographic differences in foot function in a large population-based study of community-dwelling adults.
  
  
  METHODS
  Participants in this study were from the Framingham Foot Study. Walking data were collected from both feet using a Tekscan Matscan pressure mat. Foot function was characterized using the center of pressure excursion index (CPEI). T-tests were used to assess differences between population subsets based on sex, and in men and women separately, age, body mass index (BMI), physical activity and in women, past high heel use.
  
  
  RESULTS
  There were 2111 participants included in this analysis. Significant differences in CPEI were noted by sex (p< 0.0001), by age in women (p = 0.04), and by past high heel use in women (p = 0.04).
  
  
  CONCLUSIONS
  Foot function during gait was affected by sex, as well as by age and shoe-wear in women, but not by BMI or physical activity. Future work will evaluate possible relations between CPEI and outcomes such as falls, sarcopenia, and lower extremity function.
authors: Institute for Aging Research at Hebrew SeniorLife, Boston, MA, USA. hannan@hsl.harvard.edu.
authors: Thomas J
authors: TJ
authors: Hagedorn
authors: Alyssa B
authors: AB
authors: Dufour
authors: Yvonne M
authors: YM
authors: Golightly
authors: Jody L
authors: JL
authors: Riskowski
authors: Howard J
authors: HJ
authors: Hillstrom
authors: Virginia A
authors: VA
authors: Casey
authors: Marian T
authors: MT
authors: Hannan
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