NCT03879044

Brief Summary

  1. 1.To determine the effects of tDCS on subjective measures of sleepiness in night-shift workers with shift work disorder.
  2. 2.To determine the effects of transcranial direct current stimulation (tDCS) on vigilance in night-shift workers with shift work disorder.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Mar 2019

Geographic Reach
1 country

1 active site

Status
terminated

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 12, 2019

Completed
6 days until next milestone

First Posted

Study publicly available on registry

March 18, 2019

Completed
2 days until next milestone

Study Start

First participant enrolled

March 20, 2019

Completed
1.3 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 20, 2020

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

June 20, 2020

Completed
1.3 years until next milestone

Results Posted

Study results publicly available

October 25, 2021

Completed
Last Updated

October 25, 2021

Status Verified

October 1, 2021

Enrollment Period

1.3 years

First QC Date

March 12, 2019

Results QC Date

July 28, 2021

Last Update Submit

October 22, 2021

Conditions

Keywords

Transcranial Direct Current Stimulation

Outcome Measures

Primary Outcomes (2)

  • Psychomotor Vigilance Test

    Objective measure of sleepiness. Scale ranges between each individual, with the reciprocal of the reaction time being reported.

    3 minutes

  • Karolinska Sleepiness Scale

    Subjective measure of sleepiness. Scale ranges from 1-9, with total score being reported.

    5 minutes

Secondary Outcomes (1)

  • Epworth Sleepiness Scale

    5 minutes

Study Arms (1)

Transcranial Direct Current Stimulation

EXPERIMENTAL

Active tDCS for 30 minutes before their scheduled work hours at least 3x/week for two consecutive weeks.

Device: Transcranial Direct Current Stimulation

Interventions

tDCS is a form of noninvasive, painless, brain stimulation that uses a mild direct electrical current passed between electrodes on the scalp to modify neuronal membrane resting potential in a polarity dependent manner, elevating or lowering neuron excitability in a region.

Also known as: tDCS
Transcranial Direct Current Stimulation

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • age 18-65 years
  • works 5 or more night shifts per month (each shift lasting at least 10 hours, with ≥6 hours worked between 10 pm and 8 am) with plans to maintain this schedule for the duration of the 3-week trial
  • meets the criteria for Shift Work Disorder according to the International Classification of Sleep Disorders24 and evaluation of a sleep medicine provider (physician or nurse practitioner) during a screening evaluation:
  • affirmative answers to Do you experience excessive sleepiness? (yes/no); "Do you experience difficulties with falling asleep during opportunities for sleep? (yes/no); "Is the sleep or sleepiness problem related to a work schedule where you have to work when you would normally sleep? (yes/no)"; and "Has this sleep or sleepiness problem related to your work schedule persisted for at least three months? (yes/no)
  • based on the evaluation of the sleep medicine provider, the sleep and/or wake disturbance are not better explained by another current sleep disorder, medical or neurologic disorder, mental disorder, medication use, poor sleep hygiene, or substance abuse disorder.
  • Stable medication dosage over previous 4 weeks.
  • Able to understand English and give a written informed consent document.

You may not qualify if:

  • Currently taking stimulant medications such as Modafinil, Armodafinil, Methylphenidate, or Dextroamphetamine.
  • History of automobile accident due to falling asleep while driving
  • Inability to understand or read English
  • Self-reported Substance abuse (current)
  • Excessive alcohol consumption defined as:
  • More than 3 glasses of wine a day
  • More than 3 beers a day
  • More than 60 mL of hard liquor a day
  • Presence of cardiac pacemaker or automatic implantable cardioverter-defibrillator (AICD).
  • Pregnancy, lactation (will be screened with urine pregnancy test)
  • Non-removable metal or tattoos around head
  • Use of implantable birth control device such as Implanon
  • History of frequent severe headaches
  • Unstable coronary artery disease
  • Uncontrolled Seizure disorder
  • +2 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

The Ohio State University

Columbus, Ohio, 43210, United States

Location

MeSH Terms

Conditions

Sleep Disorders, Circadian Rhythm

Interventions

Transcranial Direct Current Stimulation

Condition Hierarchy (Ancestors)

Chronobiology DisordersNervous System DiseasesDyssomniasSleep Wake DisordersOccupational DiseasesMental Disorders

Intervention Hierarchy (Ancestors)

Electric Stimulation TherapyTherapeuticsConvulsive TherapyPsychiatric Somatic TherapiesBehavioral Disciplines and ActivitiesElectroshockPsychological Techniques

Limitations and Caveats

Outcome measurements and adverse events were not analyzed and reported as the study was terminated due to funding stopped

Results Point of Contact

Title
Dr. Ulysses Magalang
Organization
The Ohio State University Wexner Medical Center

Study Officials

  • Ulysses Magalang, MD

    Ohio State University

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Model Details: This is a preliminary single-arm study. The study will last up to 6 weeks including the screening period. Subjects will receive active tDCS for 30 minutes before their scheduled work hours at least 3x/week for two consecutive weeks.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Professor of Medicine and Neuroscience Director, Sleep Medicine Program

Study Record Dates

First Submitted

March 12, 2019

First Posted

March 18, 2019

Study Start

March 20, 2019

Primary Completion

June 20, 2020

Study Completion

June 20, 2020

Last Updated

October 25, 2021

Results First Posted

October 25, 2021

Record last verified: 2021-10

Data Sharing

IPD Sharing
Will not share

Locations