Purpose: 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.
Methods: 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.
Results: 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.
Conclusions: 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.
The goal of this study was to develop a standard collection protocol for monitoring physical activity in youth with cerebral palsy.
Nemours/Alfred I duPont Hospital for Children, Wilmington, Delaware.
Correspondence: Kristen Nicholson, PhD, Nemours Alfred I duPont Hospital for Children, 1600 Rockland Rd, Wilmington, DE 19803 (Kristen.Nicholson@nemours.org).
At the time this article was written Aaron Weaver was a student at the Philadelphia College of Osteopathic Medicine.
The authors declare no conflicts of interest. This study received no outside funding.