Objective: To develop the physical activity questionnaire for Chinese children aged 6-17 years old, in order to evaluate the children's physical activity.
Methods: After systematic review, expert review and preliminary investigation, the "6-to 17-year-old Chinese children physical activity questionnaire(CCPAQ)" was established to measure the weekly physical activity. Based on the sample size estimation and inclusion and exclusion criteria, 120 children aged 6-17 were selected from one survey site in the south and north of China. SAS 9.4 software and Mplus 8.0 software were used for factor analyses to validate the modes and types of physical activity measured by CCPAQ.
Results: This study included 119 subjects in total. Exploratory factor analyses were used to assess the 33 modes and 7 types of physical activity time and extract four and one common factor, respectively. Confirmatory factor analysis fitted a second-order 4 factors model and first-order 7 factors model. The evaluation index of the two models were χ~2/df=1.41 and χ~2/df=1.61, respectively, showing that the models fitting were acceptable.
Conclusion: CCPAQ established in this study can effectively measure the physical activity of Chinese children aged 6-17 years.
Keywords: children; physical activity; questionnaire; validation.