Circadian Adjusted LED Light's Effect in People Living in Elderly Housing

Summary

Europe is undergoing a demographic change with a rapidly growing population of 65 years+. This challenges municipalities and hospitals as the ageing citizens need care and treatment due to an age-related decline in physical and mental capacity. Therefore municipalities are experiencing a growing need for sufficient and customized housing, which can support the elderly citizens in sustaining well-being and health along with preventing functional decline. Well-fare technologies, such as Circadian adjusted LED-based lighting (CALED), are suggested as a remedy for this.

To obtain proper visual sharpness and better contrast, people of older age require heightened light levels due to age-related failing vision. Furthermore, inappropriate light at night disrupts not only sleep but also the timing of the circadian rhythm, with negative consequences on cognition and emotions. Therefore CALED is being increasingly considered for use in hospitals and elderly housing because of its wide spectrum of wavelengths, good contrast and fast switching, and possibility to support a normalised circadian rhythm.

Lighting based on LED has been shown to improve the quality of sleep and to improve well-being in the elderly. However, it is not known whether CALED mimicking a normal circadian rhythm has the same benefits for elderly persons with frailty or dementia. The investigators therefore want to test the effects of CALED in elderly people with frailty and mobility disabilities and/or dementia living in elderly housing. The investigators hypothesise that CALED can improve sleep and well-being in both elderly with frailty and dementia.

Conditions

• Elderly Housing Residents With Frailty or Dementia

Interventions

OTHER

8 weeks of circadian adjusted LED-based lighting (CALED)

The luminaires are installed before the beginning of either the control or the intervention period. During the control period (8 weeks) the luminaires have normal light. During the intervention period (8 weeks) the luminaires have CALED. Cromaviso will calibrate CALED to mimic circadian rhythm according to the latest knowledge about the light phase-response curve for elderly.

Sponsors & Collaborators

• Chromaviso A/S

  collaborator OTHER

• Albertslund Kommune

  collaborator UNKNOWN

• Aalborg University

  collaborator OTHER

• Gate 21

  collaborator UNKNOWN

• Ove Andersen

  lead OTHER

Principal Investigators

• Ove Andersen, PhD, DMSc · Clinical Research Centre, Copenhagen University Hospital Hvidovre, Denmark

Study Design

Allocation

RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

NONE

Model

CROSSOVER

Eligibility

Min Age

50 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2017-09-29

Primary Completion

2018-04-21

Completion

2018-04-22

Countries

• Denmark

Study Locations