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RESEARCH ARTICLE
Open Access
Longitudinal changes in objectively measured physical activity differ for weekdays and weekends among Chinese children in Hong Kong Stephen Heung-Sang Wong1, Wendy Yajun Huang2* and Gang He1
Abstract Background: Cross-sectional investigation showed that Chinese children in Hong Kong were more physically active on weekends than weekdays, which is contrary to previous findings. However, little is known as to whether these time-segment-specific differences persist with age. This study aimed to compare the 2-year changes in accelerometer-assessed physical activity (PA) and sedentary time (ST) between weekdays and weekends among Chinese children in Hong Kong. Methods: Children aged 6–8 years were recruited from primary schools in Hong Kong. Time spent in ST (
