Examination of the effects of natural light illumination on the autonomic nervous system, sleep, and ocular blood flow: Contrast with artificial light LED illumination

JRCT ID: jRCT1020230033

Registered date:07/11/2023

Basic Information

• Recruitment status: Pending
• Health condition(s) or Problem(s) studied: Homo sapiens
• Date of first enrollment: 07/11/2023
• Target sample size: 15
• Study type: Interventional
• Intervention(s): The inspection will be conducted in a room with general LED lighting and a room with natural LED lighting that imitates sunlight, each for one night and two days.

Outcome(s)

• Primary Outcome: Autonomic nervous system, sleep, ocular blood flow
• Secondary Outcome: None

Key inclusion & exclusion criteria

• Age minimum: >= 40age old
• Age maximum: Not applicable
• Gender: Both

Include criteria

(1) Japanese healthy persons over 40 years old (at the time of registration) with no previous medical history
(2) Any gender
(3) BMI: 18-25 kg/m2
(4) Living environment: not engaged in night work
(5) Able to stay overnight for two nights on two occasions.

Exclude criteria

(1) Patients with psychosis or psychiatric symptoms that make it difficult for them to participate in the study
(2) Those who regularly take drugs, supplements, or other nutritional supplements that affect sleep.
(3) Those who are not engaged in late-night work.

Related Information

• Primary Sponsor: Toru Nakazawa
• Source(s) of Monetary Support: SeoulSemiconductor