Light Sleep: Screen Use and Sleep Health

NCT ID: NCT05342662

Last Updated: 2023-09-13

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 34 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-11-23
• Study Completion Date: 2023-09-05

Brief 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

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: OTHER
• Blinding Strategy: SINGLE

Study Groups

Blue light-blocking glasses

Participants will wear blue light-blocking glasses to evaluate whether sleep behaviors improve.

Group Type: EXPERIMENTAL

Blue light-blocking glasses

Intervention Type: DEVICE

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.

Glasses with clear lenses

Participants will wear glasses with clear lenses to serve as the control condition.

Group Type: PLACEBO_COMPARATOR

Glasses with clear lenses

Intervention Type: DEVICE

Non-blue light-blocking glasses

Interventions

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.

Intervention Type: DEVICE

Glasses with clear lenses

Non-blue light-blocking glasses

Intervention Type: DEVICE

Other Intervention Names

Swanwick Night Swannies; Swanwick glasses

Eligibility Criteria

Inclusion Criteria

1. Fluent English speaker and reader

2. Capable of providing one's own informed consent

3. Age 18 to 29 years old

4. Healthy, sighted individuals

5. Own an iOS smartphone (iPhone)

6. Willingness to update smartphone to access the current version of the Screen Time or StayFree application, depending on smartphone operating system

7. Willingness to participate in surveys, wear health monitoring devices, and provide screenshots of their smartphone's screentime application throughout the entire study

Exclusion Criteria

1. Younger than 18 or older than 29 years

2. Individuals who are blind or wear corrective lenses

3. Taking prescribed medications that affect sleep

4. Recent shift work

5. Sleep disorder diagnosis or any cardiovascular disease

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 29 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Penn State University

OTHER

Sponsor Role: lead

Responsible Party

David Reichenberger

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

David Reichenberger, MS

Role: PRINCIPAL_INVESTIGATOR

Department of Biobehavioral Health

Locations

Biobehavioral Health Building

University Park, Pennsylvania, United States

Countries

United States

Other Identifiers

STUDY00019746

Identifier Type: -

Identifier Source: org_study_id