| Full text | |
| Author(s): |
Moreno, C. R. C.
[1, 2]
;
Vasconcelos, S.
[1]
;
Marqueze, E. C.
[1, 3]
;
Lowden, A.
[2]
;
Middleton, B.
[4]
;
Fischer, M.
[1]
;
Louzada, F. M.
[5]
;
Skene, D. J.
[4]
Total Authors: 8
|
| Affiliation: | [1] Univ Sao Paulo, Sch Publ Hlth, BR-05508 Sao Paulo - Brazil
[2] Stockholm Univ, Stress Res Inst, Stockholm - Sweden
[3] Univ Catolica Santos, Santos, SP - Brazil
[4] Univ Surrey, Fac Hlth & Med Sci, Guildford GU2 5XH, Surrey - England
[5] Univ Fed Parana, Dept Physiol, BR-80060000 Curitiba, Parana - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | SCIENTIFIC REPORTS; v. 5, SEP 11 2015. |
| Web of Science Citations: | 27 |
| Abstract | |
Today's modern society is exposed to artificial electric lighting in addition to the natural light-dark cycle. Studies assessing the impact of electric light exposure on sleep and its relation to work hours are rare due to the ubiquitous presence of electricity. Here we report a unique study conducted in two phases in a homogenous group of rubber tappers living and working in a remote area of the Amazon forest, comparing those living without electric light (n = 243 in first phase; n = 25 in second phase) to those with electric light at home (n = 97 in first phase; n = 17 in second phase). Questionnaire data (Phase 1) revealed that rubber tappers with availability of electric light had significantly shorter sleep on work days (30 min/day less) than those without electric light. Analysis of the data from the Phase 2 sample showed a significant delay in the timing of melatonin onset in workers with electric light compared to those without electric light (p < 0.01). Electric lighting delayed sleep onset and reduced sleep duration during the work week and appears to interfere with alignment of the circadian timing system to the natural light/dark cycle. (AU) | |
| FAPESP's process: | 14/01514-0 - INFLUENCE OF DAYLIGHT EXPOSURE ON WORKERS HEALTH AND SLEEP AT NORTHERN AND EQUATORIAL LATITUDES. |
| Grantee: | Claudia Roberta de Castro Moreno |
| Support Opportunities: | Scholarships abroad - Research |
| FAPESP's process: | 11/19563-0 - The work temporal organization and its effects on health and wellbeing of factory workers and rubber tappers from an Amazonian extractive reserve |
| Grantee: | Claudia Roberta de Castro Moreno |
| Support Opportunities: | Regular Research Grants |