Epidemiological Study of the relationship between Stress and IT products in Elementary School Students and Middle School Students: Toward the appropriate IT use

2015 Fiscal Year Final Research Report

• Project/Area Number: 24600011
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: 子ども学(子ども環境学)
• Research Institution: Shimane University
• Principal Investigator: FUJITA Yasuyuki 島根大学, その他部局等, 名誉教授 (70173440)
• Co-Investigator(Kenkyū-buntansha): NABIKA Toru 島根大学, 医学部, 教授 (50180534) ; TANABE Tsuyoshi 山口大学, 医学(系)研究科(研究院), 教授 (80260678) ; INOUE Ken 群馬大学, 医学(系)研究科(研究院), 准教授 (40469036) ; AMANO Hiroki 鳥取大学, 医学部, 講師 (80293033) ; MIURA Mikiko 島根大学, 医学部, 助教 (40447925)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 学校保健

Outline of Final Research Achievements

We gathered epidemiological data on information device usage times and serum cortisol levels in fourth year elementary school students and first year middle school students. Our questionnaire-based survey was answered by 481 fourth year elementary school students (240 boys and 241 girls) and 556 first year middle school students (281 boys and 275 girls). The mean (± standard deviation) serum cortisol level was 8.5 (± 3.0) μg/dL. Serum cortisol levels were found to be significantly higher in girls than in boys. Moreover, the serum cortisol levels of first year middle school students were significantly higher than those of fourth year elementary school students. Our findings suggested that serum cortisol levels are associated with bedtime and cellular phone usage time.

Free Research Field

疫学