NCT05342662

Light Sleep: Screen Use and Sleep Health

Evaluating the Consequences of Mistimed Light-emitting Device Use on Cardiac Activity and Sleep Health

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 34 (actual)
• Sponsor: Penn State University · Academic / Other
• Sex: All
• Age: 18 Years – 29 Years
• Healthy volunteers: Accepted

Summary

The Phone Sleep Study is being done to find out whether wearing blue light-blocking glasses in the evening improves subsequent sleep. This is a 21-day study and participants will be asked to wear a sleep-monitoring "actiwatch", a heart tracker, and an activity monitor, as well as to provide screenshots of participants' smartphone's screen time app for three weeks. Participants will also be asked to wear a blood pressure cuff on their arm for three days during each week, for a total of nine days.

Conditions

• Glasses

Interventions

Type	Name	Description
DEVICE	Blue light-blocking glasses	Participants will be randomly assigned to wear either blue light-blocking glasses or glasses with clear lenses during the second week of the study. During the third week, participants will be assigned to wear the opposite pair of glasses.
DEVICE	Glasses with clear lenses	Non-blue light-blocking glasses

Timeline

• Start date: 2022-11-23
• Primary completion: 2023-09-05
• Completion: 2023-09-05
• First posted: 2022-04-25
• Last updated: 2023-09-13

Locations

1 site across 1 country: United States