Document Detail

Rest-activity and light exposure patterns in the home setting: a methodological case study.
MedLine Citation:
PMID:  20237336     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: This methodological case study describes light exposure and rest-activity patterns in an older adult with dementia and his caregiver spouse.
METHODS: Two devices were used to measure rest-activity and light exposure data: a wrist-worn actigraph with a light sensor to record full spectrum light exposure data and an eye-level wavelength-sensitive light meter (Daysimeter). The wife wore both devices simultaneously; the husband wore only the actigraph.
RESULTS: There were minimal feasibility issues in using the devices in the home setting. The wife's light exposure was considerably better than her husband's, but she spent little time in bright lighting. Her circadian stimulus (CS) and rest-activity values suggest a high level of circadian disruption.
CONCLUSION: This case study provides beginning support for the use of the Daysimeter in the home setting while also highlighting unrecognized circadian disturbances and very low light levels in an older couple's home.
Patricia A Higgins; Thomas R Hornick; Mariana G Figueiro
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2010-03-17
Journal Detail:
Title:  American journal of Alzheimer's disease and other dementias     Volume:  25     ISSN:  1938-2731     ISO Abbreviation:  Am J Alzheimers Dis Other Demen     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-11     Completed Date:  2010-09-30     Revised Date:  2014-03-19    
Medline Journal Info:
Nlm Unique ID:  101082834     Medline TA:  Am J Alzheimers Dis Other Demen     Country:  United States    
Other Details:
Languages:  eng     Pagination:  353-61     Citation Subset:  IM    
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MeSH Terms
Aged, 80 and over
Circadian Rhythm
Dementia* / complications
Light* / diagnostic use
Sleep Disorders, Circadian Rhythm / complications,  diagnosis*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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