Sleep, ageing and night work

Sleep, ageing and night work

Autor Pires, Maria Laura Nogueira Autor UNIFESP Google Scholar
Teixeira, Carla W. Autor UNIFESP Google Scholar
Esteves, Andrea Maculano Autor UNIFESP Google Scholar
Bittencourt, Lia Rita Azeredo Autor UNIFESP Google Scholar
Silva, Rogério Santos Autor UNIFESP Google Scholar
Santos, Ruth Ferreira Autor UNIFESP Google Scholar
Tufik, Sergio Autor UNIFESP Google Scholar
Mello, Marco Tulio de Autor UNIFESP Google Scholar
Instituição Universidade Estadual Paulista (UNESP)
Universidade Federal de São Paulo (UNIFESP)
Centro de Estudo Multidisciplinar em Sonolência e Acidentes
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.
Palavra-chave Sleep
Shift work
Night work
Aging
Polysomnography
REM
Slow wave sleep (SWS)
Idioma Inglês
Financiador Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Associação Fundo Incentivo Psicofarmacologia (AFIP)
Centro de Estudo Multidisciplinar em Sonolencia e Acidentes (CEMSA)
Número do financiamento FAPESP: 98/14303-3
Data de publicação 2009-09-01
Publicado em Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 42, n. 9, p. 839-843, 2009.
ISSN 0100-879X (Sherpa/Romeo, fator de impacto)
Publicador Associação Brasileira de Divulgação Científica
Extensão 839-843
Fonte http://dx.doi.org/10.1590/S0100-879X2009005000011
Direito de acesso Acesso aberto Open Access
Tipo Artigo
Web of Science WOS:000270233200011
SciELO S0100-879X2009000900011 (estatísticas na SciELO)
Endereço permanente http://repositorio.unifesp.br/handle/11600/5246

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