Use of Accelerometry and Global Positioning System (GPS) to Describe Children's Park-Based Physical Activity Among Racial and Ethnic Minority Youth.

Parks are one component of the built environment to promote regular physical activity (PA) among youth. This study investigated differences in park-based PA among youth based on demographics and park features in racially or ethnically diverse communities. In 2017-2018, parks were selected in majority Asian (n = 3), Latino (n = 5), and Black (n = 4) neighborhoods in North Carolina (n = 6) and New York (n = 6). Researchers recruited parents/caregivers of 5-10-year-olds to participate. Children wore an Actigraph GT3 + waist accelerometer and a QStarz GPS unit and were instructed to play normally for at least 15 min. Evenson cut-points were used to classify PA levels as sedentary, light, moderate, and vigorous. Chi-squared tests and non-parametric Kruskal-Wallis tests were used to examine differences in PA intensity minutes (sedentary, light, moderate-to-vigorous) across study location and demographic variables. Youth participated from NY (n = 200) and NC (n = 157). Overall, most park-based PA was spent in light intensity (59.9%), followed by moderate-to-vigorous intensity (32.4%). Females, compared to male participants, spent more time in sedentary behavior (9.0%, 6.1%) and less time in moderate-to-vigorous PA (26.6%, 38.1%). Participants who identified as Black (32.9% MVPA), Latino (35.8%), and Other (39.8%) spent higher percentages of time in moderate-to-vigorous PA than Asian (26.6%) and non-Hispanic White (21.3%) participants. The highest proportion of moderate-to-vigorous PA occurred on swing sets (46%) and basketball courts (45%). Racial and ethnic, sex, and activity area differences in park-based PA indicate that diverse youth use parks uniquely; these factors should be considered in designing parks for various ages and backgrounds.