Longitudinal twin study of work and life environmental factors affecting psychosomatic symptoms of nurses.

• Project/Area Number: 23593419
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Community health/Gerontological nurisng
• Research Institution: Kio University
• Principal Investigator: Inui Fujio 畿央大学, 健康科学部, 准教授 (80469551)
• Co-Investigator(Kenkyū-buntansha): 加藤 憲司 神戸市看護大学, 看護学部, 准教授 (70458404)
• Project Period (FY): 2011-04-28 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 双生児研究 / ワークスタイル / ライフスタイル / うつ / 自己効力感 / 双生児研究法 / 遺伝要因 / 環境要因 / 閉じこもり / 看護師 / 職場環境 / 生活環境 / 心身症

Outline of Final Research Achievements

To investigate the influences of work-style and lifestyle on psychosomatic symptoms. Questionnaire surveys were conducted using adult twins members of the Osaka University Twin Registry. Work-style were measured by the occupation, pattern of employment, working hours, shift work and night work. Additionally, occupational stress, depressive symptoms and somatic symptoms were measured. We found that depressive symptoms and Tojikomori ( social isolation ) have genetically correlation and genetic factor which affect Tojikomori increase by over time. In addition to, we found genetic and unique environmental factors contribute to the association between self-efficacy and depressive symptoms.

Research Products

• [Journal Article] Genetic and environmental influences on adult human height across birth cohorts from 1886 to 1994 (2016)
  • Author(s): Jelenkovic A， Hur YM， Sund R et al.
  • Journal Title: Elife. Volume: -
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A longitudinal twin study on Tojikomori and depressive symptoms in Japanese elderly (2015)
  • Author(s): Fujio Inui, Chika Honda, Kenji Kato, Rie Tomizawa, Reiko Nishihara, Kazuo Hayakawa
  • Journal Title: Psychogeriatrics Volume: Early View Issue: 4 Pages: 255-262
  • DOI: 10.1111/psyg.12157
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] The CODATwins Project: The Cohort Description of Collaborative Project of Development of Anthropometrical Measures in Twins to Study Macro-Environmental Variation in Genetic and Environmental Effects on Anthropometric Traits (2015)
  • Author(s): Karri Silventoinen, Aline Jelenkovic, Reijo Sund, et al.
  • Journal Title: Twin Research and Human Genetics Volume: 18(4) Issue: 4 Pages: 348-360
  • DOI: 10.1017/thg.2015.29
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Genetic and environmental associations between self-efficacy and depressive symptoms in a Japanese population. (2016)
  • Author(s): F.Inui， K.Silventoinen， C.Honda，et al.
  • Organizer: The 16th International Congress on Twin Studies 2016
  • Place of Presentation: Brisbane
  • Year and Date: 2016-06-20
  • Int'l Joint Research
• [Presentation] Genetic and environmental influences on tojikomori syndrome in japan, (2014)
  • Author(s): F.Inui,C.Honda, R.Tomizawa,K.Kato, K.Hayakawa
  • Organizer: The 15th International Congress on Twin Studies. 2014
  • Place of Presentation: Budapest
  • Year and Date: 2014-11-16 – 2014-11-19