关键词: 学龄前儿童, 久坐行为时间, 身体活动水平, 心理健康状况

Abstract: Objective To explore the relationship between sedentary behavior time and physical activity level,mental health status of preschool children,so as to provide reference for making intervention strategies of physical activity and mental health. Methods From January to December 2019,145 preschool children from kindergartens in this region were selected as the objects. Strengths and Difficulties Questionnaire (SDQ) (parent version),triaxial accelerometer and supporting ActiLife software were used to investigate all the children. The detection rate of mental health status abnormality,sedentary behavior time and physical activity level were summarized. Pearson/Spearman correlation test was used to analyze the correlation between sedentary behavior time and physical activity level,mental health status of preschool children. Results Preschool children in this region had a long sedentary behavior [(26.49±7.58)min/h],and it was mainly concentrated in 12:00-15:59 a day. The overall physical activity level of preschool children in this region was mainly low intensity. Boys had the highest proportion of moderate intensity physical activity,while girls had the highest proportion of low intensity physical activity,and the difference was statistically significant(χ²=10.504,P=0.005). The detection rate of abnormal mental health status of preschool children was 50.34% (73/145). Correlation analysis showed that sedentary behavior time was negatively related to physical activity level in preschool children (r=-0.418,P＜0.001),and positively related to the mental health status(r=0.341,P＜0.001). Conclusions The sedentary behavior time of preschool children is closely related to physical activity level and mental health status. It is suggested to improve the physical activity level of preschool children,shorten the sedentary behavior time so as to promote mental health.

Key words: preschool children, sedentary behavior time, physical activity level, mental health status