title: Development and validation of an exercise performance support system for people with lower extremity impairment.
abstract: OBJECTIVE
  To identify innovative strategies to support appropriate, self-directed exercise that increase physical activity levels of people with arthritis. This article reports on one interactive, multimedia exercise performance support system (PSS) for people with lower extremity impairments in strength or flexibility.
  
  
  METHODS
  An interdisciplinary team developed the PSS using self-report of lower extremity musculoskeletal impairments (flexibility and strength) to produce an individualized exercise program with video and print educational materials. Initial evaluation has investigated the validity and reliability of program assessments and recommendations.
  
  
  RESULTS
  PSS self-report and professional assessments were similar, with more impairments indicated by self-report. PSS exercise recommendations were similar to those made by 3 expert physical therapists using the same exercise data base. Results of PSS impairment assessments were stable over a 1-week period.
  
  
  CONCLUSIONS
  PSS exercise recommendations appear to be reliable and a valid reflection of current exercise knowledge in rheumatology. Furthermore, users were able to complete the computer-based program with minimal assistance and reported it to be enjoyable and informative.
authors.affiliation: School of Health Related Professions, University of Missouri, Columbia 65211, USA.
authors.forename: M A
authors.initials: MA
authors.lastname: Minor
authors.forename: J C
authors.initials: JC
authors.lastname: Reid
authors.forename: J Z
authors.initials: JZ
authors.lastname: Griffin
authors.forename: C B
authors.initials: CB
authors.lastname: Pittman
authors.forename: T B
authors.initials: TB
authors.lastname: Patrick
authors.forename: J H
authors.initials: JH
authors.lastname: Cutts
mesh_terms: D005081:Exercise Therapy / Q000379:methods*; D006801:Humans; D007866:Leg / Q000503:physiopathology; D010003:Osteoarthritis / Q000503:physiopathology / Q000534:rehabilitation*; D016730:Program Development; D015397:Program Evaluation; D016059:Range of Motion, Articular; D013813:Therapy, Computer-Assisted