Study on related factors and intervention program to enhance amount of physical activity of children in sub-tropical island areas

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The amounts of physical activity of elementary school-aged children in sub-tropical island areas(Okinawa Prefecture) in summer and winter were examined using accelerometers and compared. As a result, the levels of physical activity(number of steps, movement counts, total consumption) in winter were found higher than that of in summer. Furthermore, interestingly, the amounts of physical activity of girls during public holiday in rural area of sub-tropical islands(Ishigaki and Miyako) were discovered significantly higher than in urban area. These results showed that children's physical activity of sub-tropical island areas was affected more by urban-rural characteristics than by seasons. In addition, an intervention cognitive program was conducted in order to increase children's physical activity, but had no significant effect.