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Use of a spatiotemporal approach for understanding preschoolers' playground activity
Kimberly A Clevenger1, Sue C Grady2, Karl Erickson1
1Department of Kinesiology, Michigan State University, 308 W Circle Dr, Room 040, East Lansing, MI 48824, United States.
Abstract:
This study used spatiotemporal hot-spot analysis to characterize physical activity on the childcare center playground. Preschool-aged children (N = 34) wore a GPS and accelerometer during 2-3 outdoor periods on one day. A spatiotemporal weights matrix was generated so that points within a specified distance in meters (space) and 3 min (time) were considered neighbors. The Getis-Ord G* statistic was calculated to detect locations of significant hot/cold spots in vector magnitude counts/15‑sec. Hot/cold spots changed within a single outdoor period and between outdoor periods, highlighting the importance of time. This approach can be used to identify points of intervention during provided outdoor time.
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