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BMC Physiol. 2008 Feb 12;8:3. doi: 10.1186/1472-6793-8-3.

Transitions into and out of daylight saving time compromise sleep and the rest-activity cycles.

Author information

  • 1Department of Mental Health and Alcohol Research, National Public Health Institute, Helsinki, Finland. tuuli.lahti@ktl.fi

Abstract

BACKGROUND:

The aim of this study was to analyze the effects of transition out of and into daylight saving time on the rest-activity cycles and sleep. Rest-activity cycles of nine healthy participants aged 20 to 40 years were measured around transitions out of and into daylight saving time on fall 2005 and spring 2006 respectively. Rest-activity cycles were measured using wrist-worn accelerometers. The participants filled in the Morningness-Eveningness and Seasonal Pattern Assessment Questionnaires before starting the study and kept a sleep diary during the study.

RESULTS:

Fall transition was more disturbing for the more morning type and spring transition for the more evening type of persons. Individuals having a higher global seasonality score suffered more from the transitions.

CONCLUSION:

Transitions out of and into daylight saving time enhanced night-time restlessness and thereby compromised the quality of sleep.

PMID:
18269740
[PubMed - indexed for MEDLINE]
PMCID:
PMC2259373
Free PMC Article
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