Abstract
Objective: The present study used a natural experimental approach to examine the influence
intention regarding screen time (ST), and ST on these variables one year among students who used and did not use physical education textbooks that contained sedentary behaviors.
Methods: Two web-based surveys were administered in March 2021 (T1; 2,219 students) and 2022 (T2; 778 students) to parents of sixth grade students at T1. Parents were asked about ST, awareness, intentions, attributes (sex, body mass index of the child, and household income in T1), and publishers of the health and physical education textbooks. A path model based on the simultaneous analysis of multiple populations adjusted for attributes was used to examine the effects of T1 awareness, intention, and ST on T2 awareness, intention, and ST in students using textbooks that discussed and did not discuss sedentary behaviors.
Results: Of the 624 participants analyzed, 25.2% were students who used physical education textbooks that contained sedentary behaviors boys. Path analysis showed that awareness of T1 and T2 significantly influenced intention in both groups who used and did not use textbooks that discussed sedentary behaviors （AGFI=0.954, HOELTER0.05=575, AIC=133.788, RMSEA=0.005）. The two paths showed no significant difference.
Conclusion: Awareness affected intention, but had no effect on ST. These associations were no differences with or without the use of textbooks that discussed sedentary behavior.
