A Randomized Controlled Trial on Sleep Phase Shifts Induced by Light Exposure Using VR Headsets in Healthy Workers

A Randomized Controlled Trial on Sleep Phase Shifts Induced by Light Exposure Using VR Headsets in Healthy Workers - A Randomized Controlled Trial on Sleep Phase Shifts Induced by Light Exposure Using VR Headsets in Healthy Workers

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000056507

Enrollment

Registered

2024-12-20

Start date

2024-12-06

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy Adults

Interventions

Intervention Name: Continuous Light Exposure Intervention Details: Participants will use a VR headset equipped with a research smartphone pre-installed with a light exposure application during the

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Healthy individuals who volunteered to participate in the study with no history of psychiatric disorders, sleep disorders, or circadian rhythm sleep-wake disorders. 2. Individuals aged 20 years or older and under 40 years at the time of obtaining consent. 3. Individuals who own a smartphone or PC and are capable of providing informed consent and electronic signatures via internet-based web conferencing.

Exclusion criteria

Exclusion criteria: 1. Individuals engaged in shift work, including night shifts. 2. Individuals with color vision deficiencies or photophobia that interfere with daily life. 3. Individuals who consume alcohol regularly. 4. Individuals who regularly use psychotropic or sleep medications.5. 6. Individuals with a history or symptoms of epilepsy. 7. Individuals who have traveled across one or more time zones within three months prior to the start of the study. 8. Individuals deemed unsuitable by the principal investigator.

Design outcomes

Primary

Measure	Time frame
The average sleep midpoint (the midpoint between bedtime and wake-up time) measured using an actigraph (KISSEI COMTEC Co., Ltd. MTN-220/MTN-221) during the screening and follow-up periods.	—

Secondary

Measure	Time frame
The average bedtime and wake-up time measured using an actigraph (KISSEI COMTEC Co., Ltd. MTN-220/MTN-221) during the screening and follow-up periods. Subjective sleep evaluation based on self-reported questionnaires (average bedtime, average wake-up time, and mood upon waking). Subjective sleep evaluation based on self-reported questionnaires (Pittsburgh Sleep Quality Index: PSQI). Chronotype evaluation based on self-reported questionnaires (Morningness-Eveningness Questionnaire: MEQ). Well-being evaluation based on self-reported questionnaires (Happiness Scale, Satisfaction With Life Scale: SWLS).	—

Measure

Time frame

The average bedtime and wake-up time measured using an actigraph (KISSEI COMTEC Co., Ltd. MTN-220/MTN-221) during the screening and follow-up periods. Subjective sleep evaluation based on self-reported questionnaires (average bedtime, average wake-up time, and mood upon waking). Subjective sleep evaluation based on self-reported questionnaires (Pittsburgh Sleep Quality Index: PSQI). Chronotype evaluation based on self-reported questionnaires (Morningness-Eveningness Questionnaire: MEQ). Well-being evaluation based on self-reported questionnaires (Happiness Scale, Satisfaction With Life Scale: SWLS).

—

Countries

Japan

Contacts

Public ContactMichitaka Yoshimura

Aichi Toho University Department of Human Health

suimin.study@gmail.com0527-82-1724

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026