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

Rea Alonzo¹, Kelly K Anderson^1,2,3, Rebecca Rodrigues¹

¹Department of Epidemiology & Biostatistics, Schulich School of Medicine & Dentistry, Western University, London, ON N6A 5C1, Canada.

International Journal of Environmental Research and Public Health

|August 26, 2022

Summary

This summary is machine-generated.

Shiftwork negatively impacts executive functioning but not declarative memory. Psychological distress did not moderate this relationship in a large Canadian study.

Keywords:

CLSA cognitive performance psychological distress shift schedules shiftwork

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Published on: February 14, 2014

Area of Science:

Gerontology
Cognitive Neuroscience
Occupational Health

Background:

Limited research exists on shiftwork's cognitive effects and psychological distress's role.
Understanding these relationships is crucial for aging populations and workforce health.

Purpose of the Study:

To investigate the association between shiftwork and cognitive performance (declarative memory, executive functioning).
To examine the moderating effect of psychological distress on this relationship.
To explore differences by sex and retirement status.

Main Methods:

Cross-sectional analysis of 20,610 adults from the Canadian Longitudinal Study on Aging (CLSA).
Assessed cognitive performance in declarative memory and executive functioning.
Examined shiftwork status, psychological distress, sex, and retirement status.

Main Results:

Shiftwork was linked to poorer executive functioning (interference, MAT) but not declarative memory.
Completely and partly retired males exhibited diminished executive functioning.
No significant moderating effect of psychological distress was identified.

Conclusions:

Shiftwork is associated with cognitive deficits, specifically in executive functioning.
Psychological distress does not appear to alter the impact of shiftwork on cognition.
Findings underscore the health implications of shiftwork for cognitive health in aging adults.