About this trial
The goal of this study is to collect feasibility data on combining structured exercise aimed to improve physical fitness, and intermittent TBS (iTBS) in treating individuals diagnosed with difficult-to-treat depression who are physically inactive. By conducting this trial, we will compare the therapeutic benefits of the combined approach against the standard treatment of iTBS alone (without exercise). These findings will be used to inform future large-scale projects in which we will investigate, in a larger sample size, whether structured exercise aimed to improve fitness as recommended by most public exercise guidelines (i.e., ≥3x/week, moderate-to-vigorous intensity) serves as an active ingredient that amplifies the effectiveness of iTBS. Ultimately, the insights gained from this study will be valuable for clinicians seeking to alleviate depressive symptoms in MDD through neuromodulation techniques such as iTBS.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Are between 18-75 years old.
Able to provide voluntary informed consent.
Diagnosis of MDD or Persistent Depressive Disorder, without psychotic features, confirmed by MINI for DSM-5.
Depressive symptoms have not improved after ≥ 1 adequate antidepressant trial in the current episode (i.e., difficult-to-treat MDD), based on the Antidepressant Treatment History Form (ATHF).
Disqualifiers
Diagnosis of bipolar I or II disorder, based on DSM-5 criteria.
Current or past (<3 months) substance (excluding caffeine or nicotine) or alcohol abuse/dependence, as defined in DSM-5 criteria.
Current use of illegal substances.
Current use of cannabis.
Trial design
Parallel
Treatments tested in this trial
Theta burst stimulation
DeviceCool B70 cooled-coil (left DLPFC) with X100 MagPro rTMS Device (Magventure A/S, Farum, Denmark)
Treatment groups
Trial outcomes
Primary outcomes
Assessing feasibility on combining structured exercise and intermittent Theta Burst Stimulation (iTBS) in participants with treatment-resistant depression (TRD)
Feasibility outcomes are crucial metrics that will guide the refinement of our protocols, thereby enhancing our preparedness for future design endeavors. These will include: 1) recruitment, 2) adherence, 3) compliance, 4) retention, 5) satisfaction, and 6) adverse events.
Compare the effects on clinical response of exercise on enhancing iTBS treatment efficacy vs. iTBS alone
Clinical response will be defined as a ≥ 50% reduction in the 17-item Grid Hamilton Rating Scale for Depression (Grid-HRSD-17). The Grid HRSD is a clinician-rated instrument with seventeen items used to measure the severity of depressive episodes. The overall score ranges from 0 to 52, where scores of 0 to 7 are considered as being normal, 8 to 16 suggest mild depression, 17 to 23 moderate depression, and scores ≥ 24 indicate severe depression.
Secondary outcomes
Change in self-reported depression symptoms as measured by Beck Depression Inventory (BDI-II).
As a secondary measure of depressive symptoms. Score scale from 0 (better outcome, no depression) to 63 (worst outcome, extreme depression).
Change in self-reported anxiety symptoms as measured by Beck Anxiety Inventory (BAI)
As a secondary measure of anxiety symptoms. Score scale from 0 (better outcome, no depression) to 63 (worst outcome, extreme anxiety).
Change in self-reported suicidal thoughts symptoms as measured by Beck Scale for Suicidal Ideation (BSS)
To assess the effect of treatment on suicidal thoughts that may be improved by iTBS. Score scale from 0 (better outcome, no desire for suicide) to 38 (worst outcome, extreme desire for suicide).
Change in self-reported hopelessness as measured by State Hope Scale (SHS)
To assess the effect of treatment on self-report symptoms and perceptions of stress that may be improved by iTBS. 6-item measure where responses are rated on an 8-point Likert scale. Score scale from 1 (Definitely True) to 8 (Definitely False).
Other outcomes
Incidence of Treatment-Emergent Adverse Events
Adverse events will be tracked and recorded.
Side Effects
Side effects will be tracked and recorded on any TMS visits, using the TMS side effects questionnaire.
Sponsors and contacts
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The Royal Ottawa Mental Health Centre
Lead sponsor
University of Ottawa
Collaborator