Influences of Diurnal Bright or Dim Light Exposure on Urine Volume in Humans

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概要

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• We investigated with eight healthy females if 8hr diurnal (0700 to 1500h) bright rather than dim light (5,000vs. 80lx) influenced urine volume. Environmental illuminance was made identical at all other times besides 07:00 to 15:00h. The participants spent time at strictly regulated schedules in a bioclimatic chamber (26℃, relative humidity 60%) for 57h. Blood was drawn (2ml) just before lunch in order to calculate Creatinine clearance (Ccr). Urine volume was significantly higher during wakefulness and the 8-h sleep period with bright rather than dim light. Ccr was significantly higher after bright light. The results were discussed in terms of suppression of the sympathetic nerve system under the influence of diurnal bright light exposure. We also discussed these in terms of physiological polymorphisms.

• 日本生理人類学会の論文

著者

• Tokura Hiromi

  Institute Of Textiles And Clothing The Hong Kong Polytechnic University

• Hyun Ki-ja

  Department Of Environmental Fealth Nara Women's University

• Hyun Ki-ja

  Graduate School Of Humanities And Sciences Nara Women's University

• Tokura Hiromi

  Institute Of Textile & Clothing The Hong Kong Polytechnic University

• NISHIMURA Shinya

  Department of Anesthesiology, Osaka General Medical Center

• Tokura Hiromi

  Institute Of Textiles & Clothing The Hong Kong Plolytechnic University

• Hyun Ki-ja

  Department Of Environmental Health Nara Women's University

• Nishimura Shinya

  Intensive Care Unit, Osaka University Hospital

• Nishimura Shinya

  Department Of Anesthesiology Osaka General Medical Center

• Hyun Ki-ja

  Nara Women's University

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