title: Increasing the usefulness of tandem walking evaluation.
abstract: OBJECTIVE
  Tandem walking testing is a "standard" clinical technique for assessing balance and gait, but it is not a standardized test. We wished to develop a protocol by which we could measure sway during tandem walking at a patient's preferred cadence and at an altered cadence, which might be more challenging.
  
  
  METHODS
  Fifteen patients with vestibular complaints were evaluated with standard tandem walking testing while wearing the Swaystar belt-mounted accelerometer and were also assessed in the same way with tandem walking at two altered cadences.
  
  
  METHODS
  We measured tandem walking sway amplitude and sway velocity with eyes open in both pitch and roll planes at a patient's preferred cadence, at 75% of their preferred cadence, and at 125% of their preferred cadence.
  
  
  METHODS
  We measured total sway amplitude and sway velocity in pitch and roll planes during tandem walking with eyes open while wearing Swaystar to see if there was any increase in sway at nonpreferred cadences.
  
  
  RESULTS
  There was no correlation between preferred cadence and the age of the patient. However, there was a significant increase in both sway amplitude and sway velocity at both of the nonpreferred cadences.
  
  
  CONCLUSIONS
  Disruption of a patient's preferred cadence may present an unnatural task, and this challenge to a patient's innate gait may help detect subtle vestibular disease.
authors.affiliation: Neuro-otology Unit, Vancouver General Hospital, and Department of Surgery, University of British Columbia, Vancouver, British Columbia. art@mallinson.ca
authors.forename: Arthur I
authors.initials: AI
authors.lastname: Mallinson
authors.forename: Neil S
authors.initials: NS
authors.lastname: Longridge
mesh_terms: D000328:Adult; D000367:Age Factors; D005080:Exercise Test / Q000379:methods*; D005260:Female; D005684:Gait / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D004856:Postural Balance / Q000502:physiology*; D011237:Predictive Value of Tests; D012678:Sensation Disorders / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D013647:Task Performance and Analysis; D015837:Vestibular Diseases / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology*