Effect of light exposure before sleep on sleep quality in patients with sleep disorders

Not Applicable

Recruiting

Conditions: Diseases of the nervous system

Registration Number: KCT0008501

Lead Sponsor: Yonsei University Yongin Severance Hospital

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Recruiting

Sex: All

Target Recruitment: 40

Inclusion Criteria

1. Participants who voluntarily agreed to participate in the study and signed an informed consent form that received IRB approval, after full explanation of the characteristics of this study during their visit to Department of Family Medicine
2. Participants aged 20 years or older at the time of signing the consent form
3. Participants who experienced insomnia for more than 3 months, at least 3 days a week, even in an environment conducive to sufficient sleep, causing functional impairment
4. Those who understand and can communicate in Korean.
5. Those who will not participate in any other intervention studies (such as medication, dietary, or exercise intervention) during the research period and can complete the study
6. Those who have no restrictions on physical activity participation during the research period.

Exclusion Criteria

1. Individuals diagnosed with sleep disorders other than insomnia disorder, as defined in the DSM-5 (e.g., hypersomnia disorder, narcolepsy, breathing-related sleep disorders, circadian rhythm sleep-wake disorders, parasomnias).
2. Individuals requiring hospitalization due to uncontrolled medical conditions.
3. Individuals who, in the judgment of the researchers, have physical or mental impairments that make it difficult to wear actigraphy devices.
4. Individuals who lack the capacity to make informed decisions about their participation in the study (e.g., individuals with dementia or significant psychiatric symptoms).
5. Individuals who have attempted suicide within the past 3 months and have been identified as high-risk for suicide by a mental health specialist.
6. Individuals who have started or are currently undergoing cognitive-behavioral therapy or psychotherapy within the past 3 months.

Study & Design

Study Type: Interventional Study

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The impact of sleep lamp usage on sleep quality (assessed using the Insomnia Severity Index (7-item questionnaire, scoring range 0-28);The impact of sleep lamp usage on sleep quality based on sleep efficiency (assessed using the sleep diary written for 4 weeks)

Secondary Outcome Measures

Name	Time	Method
The impact of sleep lamp usage on quality of life (assessed using the Epworth Sleepiness Scale (ESS), Patient Health Questionnaire-9 (PHQ-9), Beck Depression Inventory (BDI));impact of sleep lamp usage on sleep-related hormones, including cortisol, ACTH (adrenocorticotropic hormone), serotonin, and melatonin;impact of sleep lamp usage on circadian-related gene changes (assessed by conducting Clock gene testing);impact of sleep lamp usage on metabolic indicators, such as fasting blood glucose, triglycerides, HDL cholesterol, and blood pressure