title: Ambulatory activity of stroke survivors: measurement options for dose, intensity, and variability of activity.
abstract: OBJECTIVE
  Walking activity is an important part of exercise prescription for stroke survivors. The purpose of this study was to: (1) compare ambulatory activity parameters in subacute stroke survivors over three time periods; and (2) discuss options for measurement of ambulatory activity data with respect to absolute activity, intensity of activity, and variability and pattern of activity.
  
  
  METHODS
  Ten subacute stroke survivors participated (mean+/-SD; age: 66+/-15 years; time from stroke to discharge: 75+/-31 days). Data collection was completed across three time periods, predischarge, 2 weeks postdischarge, and 6 weeks postdischarge. The Step Activity Monitor (Cyma Corporation) was used to measure daily activity parameters. Parameters representing dose, intensity, and variability/pattern of activity were determined using MatLab.
  
  
  RESULTS
  Minutes of activity and length of activity bouts significantly increased from predischarge to 6 weeks postdischarge (P=0.030).
  
  
  CONCLUSIONS
  The measurement of a variety of ambulatory activity parameters may aid clinicians and stroke survivors to determine whether exercise recommendations are being met with daily activity.
authors.affiliation: Department of Physical Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada. trish.manns@ualberta.ca
authors.forename: Patricia J
authors.initials: PJ
authors.lastname: Manns
authors.forename: Evan
authors.initials: E
authors.lastname: Baldwin
mesh_terms: D000368:Aged; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D035002:Lower Extremity / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology; D020521:Stroke / Q000503:physiopathology*; D017741:Survivors; D013997:Time Factors; D016138:Walking / Q000502:physiology*