Green Light Effects on Anxiety

Not Applicable

• Conditions: Anxiety
• Interventions: Device: Green Light

• Registration Number: NCT04871087
• Lead Sponsor: The Green Light Study Center

Brief Summary

The main goal of this study is to determine whether exposure to a narrow band of green light (NBGL) improves outcome of psychotherapy sessions for the treatment of anxiety.

This is a within-subject study design that examines NBGL effects (as compared to white light) on anxiety level and treatment success, as evaluated by the treating psychotherapist and the patient. For each participant, the study will consist of 8 therapy sessions, each lasting 60 minutes, in which light conditions will be presented in the following order

Session 1: White light, Session 2: white light, Session 3: NBGL (i.e., green light), Session 4: NBGL, Session 5: NBGL, Session 6: NBGL, Session 7: White light, Session 8: White light

Effects of lights (white vs.NBGL) on anxiety level will be evaluated at the beginning and end of each therapy session by the patient, using a validated questionnaire. At the end of each session, the treating psychotherapist will fill another evaluation form that summarizes her/his impression of the treatment success or lack of.

Detailed Description

Each patient is treated once a week and thus, study participation time is expected to last 8 weeks. Patients will self evaluate their anxiety level at the beginning and end of each of the 8 therapy sessions by completing the 20-questions State-Trait Anxiety Inventory (STAI Form Y-1).

Therapists will fill the following form after each of the 8 sessions:

Did you feel any difference while working with the patient in the green light as compared to regular room light?

Check all that apply:

* I was more focused

* I was more relaxed

* The patient was more relaxed

* The patient was more engaged

* The patient seemed more open

* The therapy progressed further

Study Timeline

• Study First Submitted: 2021-04-23
• Study First Submitted QC: 2021-04-28
• Study Start: 2021-05-01
• Study First Posted: 2021-05-04
• Status Verified: 2022-03
• Last Update Submitted: 2022-03-14
• Last Update Posted: 2022-03-15
• Primary Completion: 2022-04-01
• Study Completion: 2022-04-01

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 100

Inclusion Criteria

• Diagnosis of anxiety
• Being a patient at the Delray Center
• Older than 18 and younger than 95
• Being able to communicate in English
• Willingness to sign informed consent

Exclusion Criteria

• Co-morbid psychiatric conditions

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Allay lamp (narrow band green light)	Green Light	Comparing effects of NBGL vs. white light on anxiety level before and after psychotherapy treatment sessions.

Primary Outcome Measures

Name	Time	Method
Anxiety	1 year	Changes in anxiety level, as measured by the STAI (State-Trait Anxiety Inventory)

Trial Locations

Locations (1)

Delray Center for Healing; 🇺🇸 Delray Beach, Florida, United States