Study on Task Performance Under Low-Illuminance Conditions With Controlled Illuminance and Color Temperature

Study on Task Performance Under Low-Illuminance Conditions With Controlled Illuminance and Color Temperature - Study on Task Performance Under Low-Illuminance Conditions With Controlled Illuminance and Color Temperature

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000060714

Enrollment

Registered

2026-02-23

Start date

2026-02-23

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 volunteers

Interventions

Visit 1: OLED (150 lux) followed by LED (150 lux) Visit 2: LED (300 lux) followed by OLED (300 lux) Visit 3: OLED (500 lux) followed by LED (500 lux) Visit 4: LED (750 lux) followed by OLED (750 lu

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Healthy Japanese males aged 18 to 50 years old 2) Individuals with a habitual sleep duration of 7 hours or longer 3) Individuals with the ability to visit the designated university at the specified date and time 4) Individuals with written informed consent to participate in this study

Exclusion criteria

Exclusion criteria: 1) Individuals with Any current medical treatment 2) Individuals with current or past psychiatric diseases 3) Individuals with any eye diseases 4) Individuals with injuries or disabilities that interfere with undergoing the examinations 5) Individuals with an inability to refrain from consuming Foods for Specified Health Uses (FOSHU), Foods with Function Claims, or other so-called health foods during the study period 6) Individuals with current participation in another clinical study, or participation in another clinical study within one month prior to the date of informed consent 7) Individuals with plans to participate in another study during the study period 8) Individuals with an inability or unwillingness to comply with the instructions of the principal investigator, study representative,or sub-investigators 9) Individuals with an inability to comply with participant management requirements during the study period (Section 4.9)

Design outcomes

Primary

Measure	Time frame
The average number of responses on the Uchida-Kraepelin Psychodiagnostic Test under light intervention	—

Secondary

Measure	Time frame
1) Uchida-Kraepelin Psychodiagnostic Test(mean number of errors) 2)Karolinska Sleepiness Scale (KSS) 3)Autonomic Nervous System Function(fatigue status, psychological state) 4)Visual Analog Scale (VAS), Psychological Assessments	—

Countries

Japan

Contacts

Public ContactRyosuke Wakabayashi

KANEKA CORPORATION OLED Business Development Project Business Development Group Applied Technology Team

Ryosuke.Wakabayashi@kaneka.co.jp03-5574-8000

Outcome results

None listed

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