The field of Japanese school education has been worrying about children's fatigue for many years. Therefore, the purpose of this study was to clarify the condition of fatigue subjective symptoms (FSS) in schoolchildren. In addition, it was similarly aimed for extracting the related factors of FSS in junior high school students. Subjects of this study were 21,332 elementary school students and 10,617 junior high school students. The investigation was carried out by questionnaire including the 'Questionnaire of Subjective Symptoms' in March 2015. The results are summarized as follows; 1) It was shown by Two-way ANOVA in consideration of gender and grade factor that total score of the FSS was significantly increased with grade progress and females. 2) Moreover, by Three-way ANOVA in consideration of gender, grade stage and fatigue factor, it was confirmed that there were the most appeals of 'Feeling of Sleepiness.' 3) On the other hand, it was extracted by the multivariate logistic regression using the data of junior high school students that the creation of “Feeling of Sleepiness” were gender and living condition, such as sleep hours, breakfast intake, physical activity after school, video game hours, mobile phone hours and PC hours.
From the above-mentioned facts, we reached the conclusion that actions such as an everyday breakfast intake, a security of enough sleeps, a security of enough physical activity, a control in screen time and so on were necessary for the reduction of the FSS of the children.
