The Effect of a Lighting Intervention on Sleep in Parkinson Disease

Not Applicable

Completed

• Conditions: Parkinson Disease; Sleep Disturbance

• Registration Number: NCT05771558
• Lead Sponsor: Icahn School of Medicine at Mount Sinai

Brief Summary

50 participants with Parkinson's disease will be recruited to complete actigraphy studies to assess sleep disturbances. For this, participants will wear an Actigraph for seven days. Thirty of these participants with sleep disturbance will go on to receive a tailored lighting intervention (TLI) to assess the effect on sleep, fatigue, and circadian entrainment via urinary melatonin levels.

Detailed Description

Participants will undergo one week of baseline data collection using the actigraph and light meter and one night of an overnight urine collection. At the completion of the baseline week, the lighting intervention will be installed in the participants' home. Participants will be exposed to the lighting intervention for 2 hours each morning after awakening for 8 weeks. During the last week of the lighting, participants will be asked to wear the actigraph and light meter again for 7 days and collect one overnight urine sample. Participants will complete questionnaires before and after the intervention to further assess its effects.

Study Timeline

• Study Start: 2022-11-14
• Study First Submitted: 2023-02-21
• Study First Submitted QC: 2023-03-14
• Study First Posted: 2023-03-16
• Primary Completion: 2025-06-30
• Study Completion: 2025-06-30
• Status Verified: 2025-07
• Last Update Submitted: 2025-07-11
• Last Update Posted: 2025-07-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 48

Inclusion Criteria

• Diagnosis of Parkinson's disease and difficulties with sleep and/or cognition

Exclusion Criteria

• There are no exclusion criteria

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
Sleep duration using Actigraph	at Week 8 for 7 days	Sleep duration will be calculated by the Actigraph software. A longer sleep duration would indicate an improvement.

Secondary Outcome Measures

Name	Time	Method
Sleep efficiency using Actigraph	at Week 8 for 7 days	Sleep efficiency will be calculated by the Actigraph software. Sleep efficiency refers to the percentage of time a person sleeps, in relation to the amount of time a spent in bed. The percentage is calculated by dividing actual sleep time by time in bed. A higher sleep efficiency would indicate an improvement.
Urine melatonin levels	at Week 8	Melatonin levels will be assessed from overnight urine collection

Trial Locations

Locations (1)

Mount Sinai Beth Israel; 🇺🇸 New York, New York, United States