# Effects of Afternoon and Evening Light on Teenagers' Melatonin Levels, Alertness, Sleepiness and Sleep

> **NCT05483296** · NA · COMPLETED · sponsor: **University Psychiatric Clinics Basel** · enrollment: 27 (actual)

## Conditions studied

- Healthy
- Teenager
- Healthy Lifestyle

## Interventions

- **OTHER:** Dim light condition
- **OTHER:** Moderate light condition
- **OTHER:** Bright light condition

## Key facts

- **NCT ID:** NCT05483296
- **Lead sponsor:** University Psychiatric Clinics Basel
- **Sponsor class:** NETWORK
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2022-09-22
- **Primary completion:** 2023-06-20
- **Final completion:** 2023-06-20
- **Target enrollment:** 27 (ACTUAL)
- **Last updated:** 2025-03-30


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05483296

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05483296, "Effects of Afternoon and Evening Light on Teenagers' Melatonin Levels, Alertness, Sleepiness and Sleep". Retrieved via AI Analytics 2026-05-28 from https://api.ai-analytics.org/clinical/NCT05483296. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*