title: The relationship between body mass index and footprint parameters in older people.
abstract: BACKGROUND
  The relationship of body mass index (BMI) with footprint parameters has been studied in paediatric populations, but there are limited data regarding the effects of BMI on parameters in the elderly.
  
  
  OBJECTIVE
  To establish the relationship between BMI and static footprint parameters in the elderly population.
  
  
  METHODS
  128 subjects aged 65 and above with no history of lower extremity surgical intervention and no significant lower extremity weakness were included in the current study. BMI and footprint parameters of arch angle, Chippaux-Smirak index (CSI), Staheli index (SI), arch index (AI) and footprint index (FI) were measured for each subject, and statistical analysis was done to investigate the correlation between BMI and the parameters.
  
  
  RESULTS
  Weak correlations detected between all calculated indices and angles with BMI, except the left foot arch angle. CSI, SI and AI of the right foot were found to be positively correlated with BMI, while a negative correlation between the arch angle and FI of right foot was shown with BMI.
  
  
  CONCLUSIONS
  The results reveal a relationship between BMI and footprint parameters that are indicative of flatfoot in the elderly. This could be due either to confounding of the footprint measure by fat or possibly due to an as yet unknown structural change that requires further evaluation.
authors.affiliation: Department of Physical and Rehabilitation Medicine, Hacettepe University, Faculty of Medicine, Sıhhiye, 06230 Ankara, Turkey. Electronic address: ali_youssefi_2001@yahoo.com.
authors.forename: Ali Akbar
authors.initials: AA
authors.lastname: Yousefi Azarfam
authors.affiliation: Department of Physical and Rehabilitation Medicine, Hacettepe University, Faculty of Medicine, Sıhhiye, 06230 Ankara, Turkey.
authors.forename: Oya
authors.initials: O
authors.lastname: Ozdemir
authors.affiliation: Department of Physical and Rehabilitation Medicine, Hacettepe University, Faculty of Medicine, Sıhhiye, 06230 Ankara, Turkey.
authors.forename: Onur
authors.initials: O
authors.lastname: Altuntaş
authors.affiliation: Department of Physical and Rehabilitation Medicine, Hacettepe University, Faculty of Medicine, Sıhhiye, 06230 Ankara, Turkey.
authors.forename: Alp
authors.initials: A
authors.lastname: Cetin
authors.affiliation: Department of Physical and Rehabilitation Medicine, Hacettepe University, Faculty of Medicine, Sıhhiye, 06230 Ankara, Turkey.
authors.forename: Yeşim
authors.initials: Y
authors.lastname: Gökçe Kutsal
mesh_terms: D000368:Aged; D000886:Anthropometry / Q000379:methods*; D015992:Body Mass Index; D005260:Female; D005413:Flatfoot / Q000175:diagnosis; D005528:Foot / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D012984:Software
keywords: Footprint; Geriatrics; Obesity