title: Use of power tilt systems in everyday life.
abstract: OBJECTIVE
  The goal of this study was to monitor and describe the use of power tilt systems in everyday life. Additionally, tilt measurements were used to determine if participants performed regular pressure relieves.
  
  
  METHODS
  Wheelchair occupancy and seat position of 16 fulltime power wheelchair users were monitored regularly for 1-2 weeks. Daily wheelchair occupancy, typical position, time spent at different tilt angles, tilt frequency and pressure relieving tilt (PRT) frequency were described.
  
  
  RESULTS
  Participants used their tilt systems in many different ways, including subjects who typically sat at small (0-14 degrees) tilt angles and subjects who typically sat at medium (15-29 degrees) tilt angles. Few subjects tilted past 45 degrees. Almost all subjects tilted throughout the day, with the median subject performing >3 tilts per hour of wheelchair occupancy. Despite the regular use, few subjects performed regular PRTs (median = 0.13/h)
  
  
  CONCLUSIONS
  Differences in tilt-use illustrated the variability in function and activity among users, as well as the diverse benefits of a tilt system for different users. Further study into why subjects did not regularly achieve PRT magnitudes would be valuable to inform improved training, education and follow-up.
authors.affiliation: Center for Assistive Technology and Environmental Access, Georgia Institute of Technology, Atlanta, GA 30318, USA. sharon.sonenblum@coa.gatech.edu
authors.forename: Sharon Eve
authors.initials: SE
authors.lastname: Sonenblum
authors.forename: Stephen
authors.initials: S
authors.lastname: Sprigle
authors.forename: Christine L
authors.initials: CL
authors.lastname: Maurer
mesh_terms: D004867:Equipment Design; D006801:Humans; D011187:Posture; D011312:Pressure; D003668:Pressure Ulcer / Q000517:prevention & control; D013997:Time Factors; D014910:Wheelchairs / Q000706:statistics & numerical data*