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Clinical Trial Summary

Ideal interventions for the older aged population would be those that are easily accessible and associated with minimal burden on family members, the healthcare system and the individuals themselves. Mindfulness-Based Stress Reduction (MBSR) therapy and Transcranial Direct Current Stimulation (tDCS) are two interventions that may be effective in targeting cognitive deficits in individuals with anxiety, depression, and/or cognitive complaints. MBSR has been shown to decrease symptoms of depression and improve cognition and tDCS has been shown to improve cognition in the older aged population. The effectiveness of these two interventions combined to elicit changes in cognition has yet to be demonstrated. Therefore, the overall aim of the current research is to evaluate the efficacy of a combination of MBSR and tDCS to improve cognitive function in individuals with cognitive complaints and symptoms of anxiety and/or depression.

This will be a randomized pilot study. Sixteen individuals (separated into 2 groups of 8) will be randomized to receive a combination MBSR + active tDCS or MBSR + sham tDCS over 8 weeks. Participants will visit the Centre for Addiction and Mental Health (CAMH) once per week for in-class group sessions and will complete the intervention daily at home for the duration of the study. Participants will be aged 60 and older with cognitive complaints, with symptoms of anxiety and/or depression. Participants will be trained to self-administer tDCS and given guidelines for the completion of daily MBSR activities at home. It is hypothesized that the combination of active tDCS + MBSR will enhance cognition compared to the combination of sham tDCS + MBSR.


Clinical Trial Description

Neurocognitive difficulties are a common problem in the older adult population. Previous research has shown memory complaints are higher in older adults with depression or anxiety versus those without these diagnoses. This suggests that mood symptoms, or a diagnosis of a mood disorder, may represent significant predictors of cognitive impairment. If left untreated, symptoms of depression and memory complaints may lead to greater cognitive impairment i.e. Mild Cognitive Impairment (MCI) and diagnosis of dementia . Therefore, early interventions are urgently needed to prevent decline in memory and cognitive function in individuals with MCI, depression, and/or anxiety.

This will be a randomized study design. Uo to 24 individuals (n=8 per group) will be randomized to receive a combination of 8-weeks of in-class group MBSR + active or sham tDCS and daily at-home MBSR + tDCS (active or sham). Each individual must be: (1) 60 or above; (2) present with cognitive complaints but not frank cognitive impairment (at a level of mild dementia or greater); and (3) present with a diagnosis or symptoms of depressed mood and/or anxiety.

Symptoms related to cognition, memory, and mood symptoms will be assessed at baseline (T0), throughout the study, as described in the MBSR protocol, and upon completion of the 8-week treatment course (Tx). Each study participant will have a clinical assessment at both T0 and Tx. Clinicians, participants and assessors will be blinded to the tDCS condition. These assessments will confirm any diagnoses and monitor clinical stability, including possible progression of participants to a diagnosis of a mood and/or anxiety disorder(s) or dementia. Any participant that progresses into a clinical diagnosis of dementia will be excluded from the study and referred to an appropriate level of care based on the severity of their symptoms.

To train participants on the tDCS intervention, each individual will attend one-week of in-class training sessions prior to initiating the 8-week study. Participants will come to the Centre for Addiction and Mental Health (CAMH) for 5 days leading up to the initiation of the MBSR treatment for tDCS self-administration training. On the final day of tDCS training, participants will attend a 2.5 hour in-class MBSR orientation session. Following this, the 8-week course of daily MBSR + tDCS will begin with an initial orientation session. The remaining 8 weeks of the at-home MBSR + tDCS intervention will be self-conducted at each participant's place of residence, with the exception of the weekly MBSR class each participant will be required to attend at CAMH. The study coordinator will be available by phone to the participants throughout the study. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03680664
Study type Interventional
Source Centre for Addiction and Mental Health
Contact
Status Completed
Phase N/A
Start date November 8, 2018
Completion date July 4, 2019

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