<abstract xmlns="http://www.w3.org/1999/xhtml">
        
        <p> The paper presents essential results of multidisciplinary research dealing with differences in lighting conditions (natural and/or artificial) and their possible influence on melatonin secretion studied in Fukuoka (Japan) and in Warszawa (Poland). Several characteristics of lighting were considered (intensity of global 0.4-3.0 μm, visible 0.4 0.76 μm solar radiation, illuminance (lux), peak irradiance (μW∙cm−2∙nm−1), Color Corresponded Temperature (CCT, K) and peak wave length (nm)). Diurnal cycle of melatonin secretion was examined at volunteers (Poland - 15, Japan - 18), young male and female (21-33 years). Saliva samples were collected at 3h intervals, beginning at 10:00h on Thursday with subsequent sampling times at 13:00, 16:00, 19:00, 22:00 and at 01:00, 04:00 07:00h on Friday. Melatonin concentration (MC) was measured by commercials ELISA kit tests.</p>
      </abstract>

The paper presents essential results of multidisciplinary research dealing with differences in lighting conditions (natural and/or artificial) and their possible influence on melatonin secretion studied in Fukuoka (Japan) and in Warszawa (Poland). Several characteristics of lighting were considered (intensity of global 0.4-3.0 μm, visible 0.4 0.76 μm solar radiation, illuminance (lux), peak irradiance (μW∙cm−2∙nm−1), Color Corresponded Temperature (CCT, K) and peak wave length (nm)). Diurnal cycle of melatonin secretion was examined at volunteers (Poland - 15, Japan - 18), young male and female (21-33 years). Saliva samples were collected at 3h intervals, beginning at 10:00h on Thursday with subsequent sampling times at 13:00, 16:00, 19:00, 22:00 and at 01:00, 04:00 07:00h on Friday. Melatonin concentration (MC) was measured by commercials ELISA kit tests.

Seasonal and Regional Differences in Lighting Conditions and their Influence on Melatonin Secretion

Institute of Geography and Spatial Organization, Polish Academy of Sciences, Warsaw, Poland

Faculty of Geography and Regional Studies, University of Warsaw, Poland

Tomoko Ueno-Towatari, Fukuoka Woman University, Fukuoka, Japan

Bioklimatologia, Laboratory of Bioclimatology and Environmental Ergonomics, Warsaw, Poland

Quaestiones Geographicae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The paper presents essential results of multidisciplinary research dealing with differences in lighting conditions (natural and/or artificial) and their...

Seasonal and Regional Differences in Lighting Conditions and their Influence on Melatonin Secretion

Published Online: Sep 19, 2014

Page range: 17 - 25

Received: Apr 02, 2014

DOI: https://doi.org/10.2478/quageo-2014-0026

Keywords
visible radiation, lighting conditions, radiation climate of Poland and Japan,melatonin secretion, chronobiology

© Faculty of Geographical and Geological Sciences, Adam Mickiewicz University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Seasonal and Regional Differences in Lighting Conditions and their Influence on Melatonin Secretion

Published Online: Sep 19, 2014

Page range: 17 - 25

Received: Apr 02, 2014

DOI: https://doi.org/10.2478/quageo-2014-0026

Keywordsvisible radiation, lighting conditions, radiation climate of Poland and Japan,melatonin secretion, chronobiology

© Faculty of Geographical and Geological Sciences, Adam Mickiewicz University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
visible radiation, lighting conditions, radiation climate of Poland and Japan,melatonin secretion, chronobiology