Biodynamic lighting effects on the sleep pattern of people with dementia

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Abstract

Dementia can disturb the circadian rhythm more than in normal ageing people. And their biological clock is often not enough stimulated by light. Sleep disturbances form a high burden for informal caregivers and is the main reason for institutionalization. The effect of biodynamic lighting with varying intensity and colour resembling a daylight curve has hardly been objectively researched. In this study, we evaluate the exposure to biodynamic lighting on circadian functioning of 13 patients with dementia admitted to a psychiatric hospital. Three biodynamic lighting armatures designed for home use were placed in the common area for a period of three weeks and then removed for the same period. These periods were intermittent in an AB-phase design. Objective data of the sleeping pattern were collected using a bed sensor. During exposure the average frequency of night-time bed wandering significantly decreased from 11 to 5 times (P = 0.002). The average frequency of daytime napping significantly decreased from 16 to 7 times (P = 0.004). The average total night-time sleep significantly increased from 408 to 495 min (P = 0.007). The average total time out of bed at night significantly decreased from 180 to 104 min (P = 0.006). This pilot study found promising evidence (effect sizes >0.5) that biodynamic lighting, tailored to stimulate circadian entrainment, could be helpful in decreasing sleeping disturbances in patients with dementia. This biodynamic lighting setup could easily be used as a non-pharmacological intervention in a home situation.
Original languageEnglish
Pages (from-to)245-253
JournalBuilding and Environment
Volume150
DOIs
Publication statusPublished - 2019

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sleep
dementia
work environment
Lighting
non-intervention
circadian rhythm
psychiatric hospital
institutionalization
entrainment
caregiver
Clocks
Aging of materials
lighting
effect
Sleep
sensor
Color
disturbance
Sensors
evidence

Keywords

  • BRIGHT LIGHT
  • Biodynamic light
  • CYCLES
  • Circadian rhythm
  • DISTURBANCE
  • Dementia
  • MOOD
  • RHYTHMS
  • Sleep disorders
  • THERAPY

Cite this

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title = "Biodynamic lighting effects on the sleep pattern of people with dementia",
abstract = "Dementia can disturb the circadian rhythm more than in normal ageing people. And their biological clock is often not enough stimulated by light. Sleep disturbances form a high burden for informal caregivers and is the main reason for institutionalization. The effect of biodynamic lighting with varying intensity and colour resembling a daylight curve has hardly been objectively researched. In this study, we evaluate the exposure to biodynamic lighting on circadian functioning of 13 patients with dementia admitted to a psychiatric hospital. Three biodynamic lighting armatures designed for home use were placed in the common area for a period of three weeks and then removed for the same period. These periods were intermittent in an AB-phase design. Objective data of the sleeping pattern were collected using a bed sensor. During exposure the average frequency of night-time bed wandering significantly decreased from 11 to 5 times (P = 0.002). The average frequency of daytime napping significantly decreased from 16 to 7 times (P = 0.004). The average total night-time sleep significantly increased from 408 to 495 min (P = 0.007). The average total time out of bed at night significantly decreased from 180 to 104 min (P = 0.006). This pilot study found promising evidence (effect sizes >0.5) that biodynamic lighting, tailored to stimulate circadian entrainment, could be helpful in decreasing sleeping disturbances in patients with dementia. This biodynamic lighting setup could easily be used as a non-pharmacological intervention in a home situation.",
keywords = "BRIGHT LIGHT, Biodynamic light, CYCLES, Circadian rhythm, DISTURBANCE, Dementia, MOOD, RHYTHMS, Sleep disorders, THERAPY",
author = "{van Lieshout-van Dal}, E. and L. Snaphaan and I. Bongers",
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language = "English",
volume = "150",
pages = "245--253",
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}

Biodynamic lighting effects on the sleep pattern of people with dementia. / van Lieshout-van Dal, E.; Snaphaan, L.; Bongers, I.

In: Building and Environment, Vol. 150, 2019, p. 245-253.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Biodynamic lighting effects on the sleep pattern of people with dementia

AU - van Lieshout-van Dal, E.

AU - Snaphaan, L.

AU - Bongers, I.

PY - 2019

Y1 - 2019

N2 - Dementia can disturb the circadian rhythm more than in normal ageing people. And their biological clock is often not enough stimulated by light. Sleep disturbances form a high burden for informal caregivers and is the main reason for institutionalization. The effect of biodynamic lighting with varying intensity and colour resembling a daylight curve has hardly been objectively researched. In this study, we evaluate the exposure to biodynamic lighting on circadian functioning of 13 patients with dementia admitted to a psychiatric hospital. Three biodynamic lighting armatures designed for home use were placed in the common area for a period of three weeks and then removed for the same period. These periods were intermittent in an AB-phase design. Objective data of the sleeping pattern were collected using a bed sensor. During exposure the average frequency of night-time bed wandering significantly decreased from 11 to 5 times (P = 0.002). The average frequency of daytime napping significantly decreased from 16 to 7 times (P = 0.004). The average total night-time sleep significantly increased from 408 to 495 min (P = 0.007). The average total time out of bed at night significantly decreased from 180 to 104 min (P = 0.006). This pilot study found promising evidence (effect sizes >0.5) that biodynamic lighting, tailored to stimulate circadian entrainment, could be helpful in decreasing sleeping disturbances in patients with dementia. This biodynamic lighting setup could easily be used as a non-pharmacological intervention in a home situation.

AB - Dementia can disturb the circadian rhythm more than in normal ageing people. And their biological clock is often not enough stimulated by light. Sleep disturbances form a high burden for informal caregivers and is the main reason for institutionalization. The effect of biodynamic lighting with varying intensity and colour resembling a daylight curve has hardly been objectively researched. In this study, we evaluate the exposure to biodynamic lighting on circadian functioning of 13 patients with dementia admitted to a psychiatric hospital. Three biodynamic lighting armatures designed for home use were placed in the common area for a period of three weeks and then removed for the same period. These periods were intermittent in an AB-phase design. Objective data of the sleeping pattern were collected using a bed sensor. During exposure the average frequency of night-time bed wandering significantly decreased from 11 to 5 times (P = 0.002). The average frequency of daytime napping significantly decreased from 16 to 7 times (P = 0.004). The average total night-time sleep significantly increased from 408 to 495 min (P = 0.007). The average total time out of bed at night significantly decreased from 180 to 104 min (P = 0.006). This pilot study found promising evidence (effect sizes >0.5) that biodynamic lighting, tailored to stimulate circadian entrainment, could be helpful in decreasing sleeping disturbances in patients with dementia. This biodynamic lighting setup could easily be used as a non-pharmacological intervention in a home situation.

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KW - Biodynamic light

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KW - Dementia

KW - MOOD

KW - RHYTHMS

KW - Sleep disorders

KW - THERAPY

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