- Tytuł:
- The Effect of Bright Light on Physiological Circadian Rhythms and Subjective Alertness of Shift Work Nurses in Iran
- Autorzy:
-
Kakooei, H.
Ardakani, Z. Z.
Ayattollahi, M. T.
Karimian, M.
Saraji, G. B.
Owji, A. A. - Powiązania:
- https://bibliotekanauki.pl/articles/90524.pdf
- Data publikacji:
- 2010
- Wydawca:
- Centralny Instytut Ochrony Pracy
- Tematy:
-
circadian rhythms
shift work
nurse
bright light
alertness
melatonin
cortisol
body temperature - Opis:
- In this study, the effects of bright light (BL) on the rhythms in body temperature, plasma melatonin, plasma cortisol and subjective alertness, in 34 shift work nurses at a university hospital were assessed. They were exposed to very BL (4 500 lx) during 2 breaks (21:15–22:00 and 3:15–4:00) or dim light (300 lx). The subjects were studied under 24 h of realistic conditions during which their plasma cortisol and melatonin were measured at 3-h intervals; their body temperature was also measured during and after night shift work. Subjective alertness was evaluated with the Karolinska sleepiness scale. Administration of BL significantly suppressed night-time melatonin levels. A one-way ANOVA revealed that BL tended to increase cortisol levels and body temperature and significantly improved alertness. These results demonstrate that photic stimulation in a hospital setting can have a powerful influence on the adjustment of the circadian system.
- Źródło:
-
International Journal of Occupational Safety and Ergonomics; 2010, 16, 4; 477-485
1080-3548 - Pojawia się w:
- International Journal of Occupational Safety and Ergonomics
- Dostawca treści:
- Biblioteka Nauki
Artykuł