Effect of bright light during the day on sleep in geriatric patients

Effect of bright light during the day on sleep in geriatric patients - BLonG

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00028626

Enrollment

Registered

2022-06-13

Start date

2022-07-01

Completion date

Unknown

Last updated

2025-04-07

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

Conditions

sleep disorders Daytime sleepiness, pathological melatonin and cortisol levels

Interventions

Group 1: Patient group exposed to the light intervention during the first week of observation. Group 2: Patient group exposed to the light intervention in the second week of observation.

Eligibility

Sex/Gender

All

Age

70 Years to No maximum

Inclusion criteria

Inclusion criteria: Male and female patients, capacity to consent, geriatric trauma patients

Exclusion criteria

Exclusion criteria: Active COVID-19 infection, cognitive deficits measured with the Mini-Mental-Status (standard at admission to program of geriatric early rehabilitative complex therapy) at value <25

Design outcomes

Primary

Measure	Time frame
melatonin level, cortisol level	—

Secondary

Measure	Time frame
subjective sleep quality, perceived sleep duration, daytime sleepiness by means of sleep diary in the morning and in the evening, heart rate, sleep duration, movement during sleep by means of actigraphy	—

Countries

Germany

Contacts

Public ContactSvenja Lange

Universitätsklinikum RWTH Aachen

svenja.lange@rwth-aachen.de015254355108

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 6, 2026