title: Developing a Clinical Protocol for Habitual Physical Activity Monitoring in Youth With Cerebral Palsy.
abstract: The StepWatch (SW) has been used to monitor physical activity (PA) in youth with cerebral palsy; however, there is no standard collection protocol. The goal was to develop such a protocol.
  
  
  
  Data were examined from patients who wore the SW for 8 to 14 days. The Spearman-Brown prediction formula determined the minimum number of days for reliable PA. Weekdays were compared to weekends and 10- and 60-second collection intervals were examined.
  
  
  
  The PA data were collected from 98 youth with cerebral palsy. Results showed 3 days would provide reliable representation of PA, participants took significantly more steps during school days compared with weekends, and there were no differences between collection intervals.
  
  
  
  We recommend setting the SW for 7 days at 10-second collection rate. Data should be analyzed if at least 3 days of data are present. Weekdays and weekend days should be noted, and both included when possible.
authors.affiliation: Nemours/Alfred I duPont Hospital for Children, Wilmington, Delaware.
authors.forename: Kristen
authors.initials: K
authors.lastname: Nicholson
authors.forename: Aaron
authors.initials: A
authors.lastname: Weaver
authors.forename: Ameeka
authors.initials: A
authors.lastname: George
authors.forename: Robert
authors.initials: R
authors.lastname: Hulbert
authors.forename: Chris
authors.initials: C
authors.lastname: Church
authors.forename: Nancy
authors.initials: N
authors.lastname: Lennon
mesh_terms: D061725:Accelerometry / Q000295:instrumentation*; D000293:Adolescent; D002547:Cerebral Palsy / Q000503:physiopathology*; D002648:Child; D002985:Clinical Protocols; D015444:Exercise / Q000502:physiology*; D005260:Female; D005684:Gait / Q000502:physiology; D006184:Habits; D006801:Humans; D008297:Male; D010507:Periodicity; D013997:Time Factors