Does Shiftwork Impact Cognitive Performance? Findings from the Canadian Longitudinal Study on Aging (CLSA)

Rea Alonzo*, Kelly K. Anderson, Rebecca Rodrigues, Neil Klar, Paolo Chiodini, Manuel Montero-Odasso, Saverio Stranges*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Few large nationwide studies have investigated the relationship between shiftwork and cognitive performance, and little is known about whether and how psychological distress may impact this relationship. This study aimed to examine: (1) the cross-sectional relationship between shiftwork (yes/no) and some aspects of cognitive performance (declarative memory and executive functioning) and (2) the potential moderating effect of psychological distress among 20,610 community-dwelling adults from the comprehensive cohort of the Canadian Longitudinal Study on Aging (CLSA). Differences by sex and retirement status were also explored. Shiftwork was significantly associated with poorer performance for executive functioning (interference condition: ß = 0.47, 95% CI: 0.31 to 0.63; MAT: ß = -0.85, 95% CI: -1.21 to -0.50) but not for declarative memory. Completely and not/partly retired males showed poorer cognitive performance on executive functioning. However, no evidence of a moderating effect by psychological distress was found. Our findings confirm the association between shiftwork and cognitive performance and highlight important health correlates of shiftwork.

Original languageEnglish
JournalInternational Journal of Environmental Research and Public Health
Volume19
Issue number16
DOIs
Publication statusPublished - 16 Aug 2022

Keywords

  • CLSA
  • cognitive performance
  • psychological distress
  • shift schedules
  • shiftwork

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