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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Sleep, ageing and night work

Texto completo
Autor(es):
Pires, M. L. N. [1] ; Teixeira, C. W. [2, 3] ; Esteves, A. M. [2, 3] ; Bittencourt, L. R. A. [2, 3] ; Silva, R. S. [3, 2] ; Santos, R. F. [3] ; Tufik, S. [2, 3] ; Mello, M. T. [3, 2]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Univ Estadual Paulista, Dept Psicol Expt & Trabalho, Assis, SP - Brazil
[2] Ctr Estudo Multidisciplinar Sonolencia & Acidente, Sao Paulo - Brazil
[3] Univ Fed Sao Paulo, Escola Paulista Med, Dept Psicobiol, BR-04020060 Sao Paulo - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Brazilian Journal of Medical and Biological Research; v. 42, n. 9, p. 839-843, SEP 2009.
Citações Web of Science: 12
Resumo

Studies have shown that the frequency or worsening of sleep disorders tends to increase with age and that the ability to perform circadian adjustments tends to decrease in individuals who work the night shift. This condition can cause consequences such as excessive sleepiness, which are often a factor in accidents that occur at work. The present study investigated the effects of age on the daytime and nighttime sleep patterns using polysomnography (PSG) of long-haul bus drivers working fixed night or day shifts. A total of 124 drivers, free of sleep disorders and grouped according to age (< 45 years, N = 85, and >= 45 years, N = 39) and PSG timing (daytime (D) PSG, N = 60; nighttime (N) PSG, N = 64) participated in the study. We observed a significant effect of bedtime (D vs N) and found that the length of daytime sleep was shorter {[}D: < 45 years (336.10 +/- 73.75 min) vs N: < 45 years (398 +/- 78.79 min) and D: >= 45 years (346.57 +/- 43.17 min) vs N: >= 45 years (386.44 +/- 52.92 min); P <= 0.05]. Daytime sleep was less efficient compared to nighttime sleep {[}D: < 45 years (78.86 +/- 13.30%) vs N: < 45 years (86.45 +/- 9.77%) and D: >= 45 years (79.89 +/- 9.45%) and N: >= 45 years (83.13 +/- 9.13%); P <= 0.05]. An effect of age was observed for rapid eye movement sleep {[}D: < 45 years (18.05 +/- 6.12%) vs D: >= 45 years (15.48 +/- 7.11%) and N: < 45 years (23.88 +/- 6.75%) vs N: >= 45 years (20.77 +/- 5.64%); P <= 0.05], which was greater in younger drivers. These findings are inconsistent with the notion that older night workers are more adversely affected than younger night workers by the challenge of attempting to rest during the day. (AU)

Processo FAPESP: 98/14303-3 - Center for Sleep Studies
Beneficiário:Sergio Tufik
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs