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Effect of blue light on stress

Effect of blue light exposure on autonomic functions and perceived stress among medical students: A randomized controlled trial - NIL

Status
Active, not recruiting
Phases
Phase 2Phase 3
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2025/12/098294
Enrollment
70
Registered
2025-12-02
Start date
Unknown
Completion date
Unknown
Last updated
2025-12-08

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

Conditions

None listed

Interventions

Intervention1: Blue light exposure: Subjects will lie in the supine position, with minimal comfortable clothing and gaze at the ceiling-mounted blue LED light strip of wavelength 470 to 480nm and eye

Sponsors

Dr Chandana A
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1. Subjects willing to participate after signing the informed consent form 2. Individuals with moderate to high perceived stress (PSS 10 more than or equal to 14) 3. With normal or corrected to normal vision

Exclusion criteria

Exclusion criteria: 1. Students with a history of Cardiovascular diseases, Chronic autonomic dysfunctions, Neurological disorders (e.g., epilepsy, migraine), Severe psychiatric illnesses 2. Current use of autonomic-modulating medications, antidepressants, sedatives, or beta-blockers. 3. Participants with color blindness or visual impairments affecting color perception. 4. Students with a history of photosensitivity or light-triggered headaches/seizures. 5. Individuals involved in night-shift work or with severe irregular sleep schedules. 6. Individuals habituated to coffee, tea, smoking, or alcohol 7. Ongoing participation in any other clinical or stress management intervention (e.g., psychotherapy, light therapy, active relaxation protocols).

Design outcomes

Primary

MeasureTime frame
Perceived stress, Heart rate variability, and galvanic skin responseTimepoint: Pre assessment (baseline) Post assessment (post one month of intervention)

Secondary

MeasureTime frame
To assess the percentage change in the time and frequency domains of the HRV To correlate the changes in the heart rate variability with the changes in the perceived stress Blood pressure and heart rate changesTimepoint: Pre assessment (baseline) Post assessment (post one month of intervention)

Countries

India

Contacts

Public ContactDr Sujatha K J

Sri Dharmasthala Manjunatheshwara College of Naturopathy and Yogic Science, Ujire

chandanaaravind789@gmail.com7619615851

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026