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The present study investigated physical activity trends among young children aged three, four, and five years old in Hong Kong preschools using pedometry. Subjects were eighty-six boys and sixty-two girls ( n = 148). The Digi-walker sw-200 electronic pedometers were utilized to collect activity data during daily regular physical activities in three preschools. School A was located at the rural area whereas School B and C were in urban areas. An observation inventory, Children Activity Rating's Scale (CARS), was used to categorize the intensity level of the physical activities and to validate the pedometer counts. In line with overseas studies, significant age and gender differences in physical activity levels were also observed among the Hong Kong preschool children. A two (gender) 2 three (age groups) analysis of variance indicated that both main effects were statistically significant ( p < 0.05). Older children in the school (School A) with a larger outdoor play space in a rural district were much more active than their counterparts in urban schools (Schools B and C) with limited indoor play space. The pedometer counts correlated significantly ( p < 0.05) with the CARS scores, which suggested that pedometry can be a reliable tool to measure the intensity of physical activity level of preschool children.
Louie et al. (Sat,) studied this question.