The relationship between physical activity,sedentary behavior and sleep in young children based on the isochronic substitution model
To explore the changing characteristics of young children's sleep problems after using the isochronic substitution model to simulate the mutual substitution of moderate to vigorous intensity physical activity,light intensity physical activity,and sedentary behavior,and then summarize the effective strategies for improvement of different types of preschool children's sleep problems.807 children aged 3～6 years old from 9 kindergartens were recruited,63 linear regression models were used to evaluate the relationship between different intensity physical activity,sedentary behavior and children's overall and various dimensions of sleep problems.On this basis,the changes of children's overall and various dimensions of sleep problems after moderate to vigorous physical activity replaced light physical activity and sedentary behavior were also evaluated,respectively.The results showed that moderate to vigorous intensity physical activity had significant negative effects on sleep problems,sleep duration,daytime sleepiness and other dimensions,and that when moderate to vigorous intensity physical activity replaced light intensity physical activity and sedentary behavior with 10 min isochronous time,the total sleep problems of all and substandard children decreased significantly,and all of them continued to decrease with the increase of replacement time.In each dimension,when moderate to vigorous intensity physical activity replaced light intensity physical activity and sedentary behavior with 10 min isochronous time,sleep duration of all children with the standard was significantly decreased,while parasomnias and daytime sleepiness of children without the standard were significantly decreased.In addition,sleep onset delay and daytime sleepiness of all children were significantly decreased when sedentary behavior was replaced by isochronous.The study concluded that increasing the level of moderate to vigorous intensity physical activity is beneficial for young children to maintain adequate sleep and alleviate daytime sleepiness,which in turn improves young children's sleep problems.Increasing the relative proportion of moderate to vigorous intensity physical activity and decreasing the proportion of light intensity physical activity or sedentary behaviors are effective strategies to address sleep problems in young children,especially those who do not meet the standards.In addition,replacing light intensity physical activity or sedentary behaviors with moderate to vigorous intensity physical activity at equal intervals can be targeted to improve one or more dimensions of sleep problems in young children who meet or do not meet these standards.
physical activity of young childrensedentary behaviorsleepisochronic substitution model
万方数据
维普
