Concussion, Mild Clinical Trial
Official title:
Effects of Bright Light Therapy of Sleep, Cognition, Brain Function, and Neurochemistry in Mild Traumatic Brain Injury
Verified date | November 2016 |
Source | University of Arizona |
Contact | n/a |
Is FDA regulated | No |
Health authority | United States: Institutional Review Board |
Study type | Interventional |
Mild traumatic brain injuries (mTBI) or "concussions" are an increasingly prevalent injury
in our society. Patients with post-concussion syndrome have been shown to have deficits on
tests of short term memory, divided attention, multi-tasking, information processing speed,
and reaction time, as well as alteration in mood and emotional functioning. Many patients
have other vague complaints including fatigue, dizziness, irritability, sleep disturbances,
and chronic headaches. Furthermore, sleep disruption of one of the most common complaints in
patients suffering from traumatic brain injuries, with as many as 40 to 65% of patients with
mTBI complaining of insomnia. Sleep problems in these patients are associated with poorer
outcome, while resolution of the sleep disturbance is associated with improvement in
cognitive functioning.
Despite recent evidence of the correlation between sleep quality and recovery from traumatic
brain injury, and the well-established role of sleep in neural plasticity and neurogenesis,
there have been virtually no direct studies of the causal effects of sleep on recovery
following mTBI. However, it is quite likely that sleep plays a critical role in recovery
following brain injury.
A particularly promising non-pharmacologic approach that shows potential in
improving/modifying abnormalities of the circadian rhythm and sleep-wake schedule is bright
light therapy. For the proposed investigation, we hypothesize that bright light therapy may
be helpful in improving the sleep of patients with a recent history of mTBI and may also
have other mood elevating effects, both of which should promote positive treatment outcome
in these individuals. Bright light therapy may increase the likelihood that they will
recover more quickly, benefit more extensively from other forms of therapy, and build
emotional and cognitive resilience.
Status | Completed |
Enrollment | 32 |
Est. completion date | December 2013 |
Est. primary completion date | December 2013 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years to 50 Years |
Eligibility |
Inclusion Criteria: - Age range between 18 and 50. - Subjects must be right handed. - The primary language of the subjects must be English. - Subjects have experienced a "concussion" or mTBI within the preceding 18 months, but no sooner that 4 weeks prior to their screening. The occurrence of a concussion or mTBI must be documented by a medical report or other professional witness documentation. - If documented, Glasgow Coma Scale in the range of 13-15 following the injury. - Subjects must have complaints of sleep difficulties that emerged or worsened following the most recent head injury. - At least half of subjects must have evidence of sleep onset insomnia or delayed sleep phase disorder. Exclusion Criteria: - Any other history of neurological illness, current Diagnostic and Statistical Manual (DSM-IV) Axis I disorder, lifetime history of psychotic disorder, or head injury with loss of consciousness > 30 minutes - Complicating medical conditions that may influence the outcome of neuropsychological assessment or functional imaging (e.g., HIV, brain tumor, etc.) - Mixed or left-handedness - Abnormal visual acuity that is not corrected by contact lenses - Contraindicated conditions noted by the manufacture of the light device such as the use of photosynthesizing medications, history of cataract surgery, and pre-existing eye conditions. - Metal within the body, claustrophobia, or other contraindications for neuroimaging - Less than 9th grade education - Excess current alcohol use (more than 2 instances of intake of 5+ drinks (men) when or 4+ drinks (women) when drinking in the past two months, and/or on average drinking > 2 drinks per day (men); > 1 drinks per day (women) during the past two months - History of alcoholism or substance use disorder - Significant use of illicit drugs - History of marijuana use within the past 6 weeks, use of marijuana before the age of 16, and/or use of > 20 marijuana cigarettes throughout the participant's lifetime. - Subjects who engage in shift-work, night work, or who have substantially desynchronized work-sleep schedules (i.e., sleeping later than 10:00 a.m. more than once a week) will be excluded |
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment
Country | Name | City | State |
---|---|---|---|
United States | University of Arizona Medical Center | Tucson | Arizona |
Lead Sponsor | Collaborator |
---|---|
University of Arizona | U.S. Army Medical Research Acquisition Activity |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | Change From Baseline in Beck Depression Inventory (BDI-II) Scores at 6 Weeks | The Beck Depression Inventory (BDI-II) is a self report scale utilized for measuring the severity of depression. Scores can range from 0-63 (0 meaning minimal depressive symptoms, and 63 being severe depressive symptoms). Participants are given this on baseline and post treatment. | Change from baseline at 6 weeks (post-treatment) | No |
Primary | Performance on Multiple Sleep Latency Test (MSLT) | The MSLT is a objective measure of sleepiness. Participants will take a brief nap 3 times during the 1st and second visit. The period of time between wake and sleep onset will be utilized as an objective measure of sleepiness (in minutes). A mean value will be calculated for the entirety of the pre-treatment napping periods and for the post treatment visits. | Change from baseline performance at 6 weeks (post-treatment) | No |
Secondary | Neural Activation During Functional Magnetic Resonance Imaging (fMRI) Executive Function Task | Change from baseline in left prefrontal cortical response during a multi source interference task at six weeks. Methods utilized to assess activity in the left prefrontal cortex/inferior frontal operculum included a regions of interest analysis. | Change from baseline performance at 6 weeks (post-treatment) | No |
Secondary | Score on Pittsburgh Sleep Quality Index (PSQI) | The Pittsburgh Sleep Quality Index is a self report measure of sleep quality. The overall score takes into account many different facets of sleep, such as sleep quality, sleep latency, sleep duration, sleep disturbances, etc. The scores range from 0-21, and any score that is equal to or greater than 5 is indicative of poor sleep quality. | Change from baseline at 6 weeks (post-treatment) | No |
Secondary | Actigraphy-measured Sleep Quality | Actigraphy is an objective measure that determines sleep vs. wake. It is a watch with an accelerometer worn on the wrist. Sleep quality is determined by the amount of time in bed divided by the amount of time sleeping (in minutes). | Change from baseline at 6 weeks (post-treatment) | No |
Secondary | Performance on Neuropsychological Assessment | The Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) is a neuropsychological assessment that measures different facets of memory including the following: immediate memory, visuospatial/constructional, language, attention, and delayed memory. This is given to all participants on both pre and post treatment visits. The total range for this scale is 40-160. Lower values represent a worse outcome, and higher values represent an improved outcome. | Change from baseline at 6 weeks (post-treatment) | No |
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