| Project/Area Number |
15K08801
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Hygiene and public health
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| Research Institution | University of Yamanashi |
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Principal Investigator |
Sato Miri 山梨大学, 大学院総合研究部, 助教 (10535602)
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| Co-Investigator(Kenkyū-buntansha) |
山縣 然太朗 山梨大学, 大学院総合研究部, 教授 (10210337)
鈴木 孝太 愛知医科大学, 医学部, 教授 (90402081)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 抑うつ / 起立性調節障害 / インターネット依存 / 思春期 / メンタルヘルス / 抑鬱 |
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| Outline of Final Research Achievements |
Internet addiction (IA) has become a serious health problem in industrialized countries, especially among adolescents. This study aimed to examine the effects of depressive symptoms on the later onset of IA by an on-going community-based birth cohort study in a rural area of Japan. Study participants were 5th to 7th grades students. We followed them for two years. Children who had depressive symptoms both at baseline and one year later were significantly at risk on the later onset of IA. In addition, children who had either had depressive symptoms for two years were a tendency to the later onset of IA. In the analyses, we excluded children who used the internet for >2 h per day at baseline or at one year later, because these children might already have IA. After the exclusion, children who used many hours became the tendency of IA.
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