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Psychoneuroendocrinology|May 23, 2026
Association of internet addiction symptoms with hair cortisol and hair testosterone concentrationsHideki Tsumura, Shuhei IzawaInternational Archives of Occupational and Environmental Health|July 5, 2016
Effort-reward imbalance, cortisol secretion, and inflammatory activity in police officers with 24-h work shiftsShuhei Izawa, Akizumi Tsutsumi, Namiko OgawaIndustrial Health|February 15, 2026
Association of effort-reward imbalance with fingernail cortisol levels in apparel manufacturing workersMikiko Kawasaki, Akinori Nakata, Shuhei IzawaShinrigaku Kenkyu : the Japanese Journal of Psychology|March 24, 2005
[Study on self and other ratings of hostility]Shuhei Izawa, Masahisa Kodama, Shinobu NomuraBiopsychosocial Medicine|December 17, 2016
Seasonality in mood and behaviours of Japanese residents in high-latitude regions: transnational cross-sectional studyYumiko Kurata, Shuhei Izawa, Shinobu NomuraJournal of Occupational Health|March 5, 2024
Psychosocial characteristics of workers with irritable bowel syndrome and its relationship with abdominal symptoms and work productivityNagisa Sugaya, Shuhei Izawa, Takeshi SasakiInternational Journal of Behavioral Medicine|May 23, 2006
Dimensions of hostility in Japanese undergraduate studentsShuhei Izawa, Masahisa Kodama, Shinobu NomuraPsychiatry Research|February 23, 2018
Stress underestimation and mental health literacy of depression in Japanese workers: A cross-sectional studyNanako Nakamura-Taira, Shuhei Izawa, Kosuke Chris YamadaBMJ Public Health|November 5, 2025
How many monthly nighttime-sleep opportunities are optimal for recovery from fatigue among shift-working nurses? A 1-month sleep log observational study to test anchor nighttime sleep in JapanTomohide Kubo, Hiroki Ikeda, Shuhei Izawa, et al.Brain, Behavior, and Immunity|July 17, 2012
The diurnal patterns of salivary interleukin-6 and C-reactive protein in healthy young adultsShuhei Izawa, Keiichi Miki, Xinxin Liu, et al.Pageof 7