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Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
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Area of Science:

  • Sleep science
  • Occupational health
  • Psychology

Background:

  • Sufficient sleep is vital for physical health, mental well-being, and performance.
  • Modern urban lifestyles, particularly work-related factors, negatively affect sleep patterns.
  • Understanding the interplay between work, sleep, and health is crucial.

Purpose of the Study:

  • To investigate the associations between work-related factors and sleep.
  • To compare subjective and objective sleep measures on workdays versus work-free days.
  • To examine the impact of sleep duration and quality on mental health and performance.

Main Methods:

  • Utilized questionnaires and longitudinal wearable (Fitbit Inspire 2) sleep data.
  • Included young, healthy adults (aged 18-48) in a German metropolitan area (n=67).
  • Employed Spearman correlation analyses with 95% confidence intervals to assess associations.

Main Results:

  • Perceived workload correlated with depression/anxiety symptoms, daytime dysfunction, and poor subjective sleep quality, especially on workdays.
  • Objective sleep duration and timing were longer and later on work-free days compared to workdays.
  • Higher objective sleep efficiency and subjective sleep quality were observed on work-free days, with longer sleep duration associated with more restful sleep and increased REM sleep.

Conclusions:

  • Work-related sleep loss should be minimized to maintain adequate sleep duration and quality.
  • Compensating for sleep debt on work-free days is essential for recovery.
  • Prioritizing sleep is pivotal for mental health, cognitive function, and overall performance.