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Temporal sleep patterns in adults using actigraph.

Lia Matuzaki1, Rogerio Santos-Silva2, Elaine Cristina Marqueze2

  • 1Departamento de Psicobiologia, Universidade Federal de São Paulo. Rua Napoleão de Barros 925, CEP 04024-002, São Paulo/SP, Brazil.

Sleep Science (Sao Paulo, Brazil)
|October 21, 2015
PubMed
Summary

This study objectively assessed sleep-wake patterns in São Paulo adults using actigraphy and the Morningness/Eveningness Questionnaire (MEQ). Actigraphy effectively identified distinct sleep patterns and circadian preferences, distinguishing morning and evening types.

Keywords:
ActigraphCircadian preferencesEveningnessMorningnessSleep-wake patternTemporal patterns

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Area of Science:

  • Chronobiology
  • Sleep Medicine
  • Human Physiology

Background:

  • Understanding temporal sleep patterns is crucial for public health.
  • Circadian preferences, or chronotypes, influence daily functioning.
  • Objective sleep assessment tools are needed to complement subjective measures.

Purpose of the Study:

  • To characterize temporal sleep-wake patterns in São Paulo adults.
  • To evaluate actigraphy's utility in assessing sleep patterns and chronotypes.
  • To identify distinct sleep phenotypes within the study population.

Main Methods:

  • Utilized actigraphy for objective sleep monitoring over at least three days.
  • Administered the Morningness/Eveningness Questionnaire (MEQ) to assess chronotype.
  • Employed cluster analysis on sleep parameters (sleep onset, efficiency, latency, total sleep time) to identify groups.

Main Results:

  • 92% of 359 adults exhibited monophasic sleep patterns.
  • Actigraphy objectively assessed sleep-wake cycles and differentiated chronotypes.
  • Morning-type individuals were more prevalent, older, and had higher MEQ scores than evening types.

Conclusions:

  • Actigraphy is a valuable tool for objectively assessing temporal sleep patterns.
  • Objective data can effectively discriminate between morning and evening chronotypes.
  • Findings highlight the utility of actigraphy in sleep research and clinical practice.