Physical activity, sedentary behavior, and sleep, which are 24-hour activities, are complementary.European and American countries have issued guidelines that integrate the recommended times for the three actions.Evidence is accumulating that shows the relationship between the achievement status and health status.For example, guidelines in Canada and Australia call for at least 3 minutes of physical activity each day, 180 of which is moderate to vigorous intensity, and no more than 60 hours of screen time per day. , recommends at least 1-2 hours of sleep (8-10 hours for 5-11 year olds).On the other hand, there is little evidence targeting the Japanese population.

　Therefore, the research team decided to examine the association between achievement of 24-hour behavioral guidelines and subjective health in a Japanese youth population.A questionnaire survey was conducted on 31 5th grade elementary school students (2,408% girls) enrolled in 52.2 elementary schools in Okinawa Prefecture, and 30 2nd grade junior high school students (4,360% girls) enrolled in 49.9 junior high schools.

　Analysis showed that achieving "screen time and sleep" guidelines in elementary school students was associated with better health.In contrast, among junior high school students, achievement of ``physical activity only'', ``sleep only'', ``screen and sleep'', ``physical activity and sleep'', and ``all three guidelines'' was associated with good health status. I knew there was

　This study points out the effectiveness of promoting physical activity while focusing on getting adequate sleep at night for improving the health of adolescents, especially junior high school students.

Paper information:[Public Health] Association between 24-h movement behavior and self-rated health: a representative sample of adolescent in Okinawa, Japan