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  • 1
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2021
    In:  Neurology: Clinical Practice Vol. 11, No. 4 ( 2021-08), p. 291-297
    In: Neurology: Clinical Practice, Ovid Technologies (Wolters Kluwer Health), Vol. 11, No. 4 ( 2021-08), p. 291-297
    Abstract: To conduct a pilot randomized controlled trial to determine whether participation in a group-based structured telehealth intervention increases physical activity in people with multiple sclerosis (MS). Methods In this parallel-arms trial, all study procedures were administered remotely. Adults diagnosed with MS (any subtype) were randomized to one of two 12-week (1 h/wk) active conditions: eFIT, online moderated structured groups; or eJournal, online independent journaling. For comparison, a treatment-as-usual (TAU; i.e., no eFIT/eJournal) group was enrolled. The primary outcome was feasibility (completion and adherence). The secondary efficacy outcomes included self-reported physical activity level (International Physical Activity Questionnaire, IPAQ). Results Participants were 37 adults with MS. The sample was diverse: 66.7% female; age range 23–64 years; 17.5% Hispanic, 12.5% Black; and progressive and relapsing-remitting disease subtypes. Regarding feasibility, 70.7% completed; average adherence was 74.9%. Physical activity in active groups increased by 34.2% (baseline IPAQ = 2,406.8 ± 1,959.7, follow-up = 3,229.4 ± 2,575.2) and decreased in the TAU group by 17.4% (baseline = 2,519.9 ± 1,500.1, follow-up = 2,081.2 ± 1,814.9); group × time interaction was not statistically significant [F(2,25) = 1.467, p = 0.250; partial η 2 = 0.105]. Conclusions Telehealth represents an accessible, acceptable vehicle to deliver targeted behavioral treatments to a neurologic population. eFIT may be an effective intervention for increasing physical activity, a historically intractable treatment target, in individuals with MS. In addition, these results provide evidence for feasibility of conducting fully remote clinical trial research. Classification of Evidence This study provides Class II evidence that for people with MS, participation in a group-based structured telehealth intervention compared with TAU resulted in a (non-significant) increase in self-reported physical activity level. The percentage of participants who completed follow-up questionnaires did not differ between groups. The trial was registered at ClinicalTrials.gov ( NCT03829267 ).
    Type of Medium: Online Resource
    ISSN: 2163-0402 , 2163-0933
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2021
    detail.hit.zdb_id: 2645818-4
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  • 2
    In: Neurology, Ovid Technologies (Wolters Kluwer Health), Vol. 90, No. 6 ( 2018-02-06), p. 278-288
    Abstract: Cognitive decline is recognized as a prevalent and debilitating symptom of multiple sclerosis (MS), especially deficits in episodic memory and processing speed. The field aims to (1) incorporate cognitive assessment into standard clinical care and clinical trials, (2) utilize state-of-the-art neuroimaging to more thoroughly understand neural bases of cognitive deficits, and (3) develop effective, evidence-based, clinically feasible interventions to prevent or treat cognitive dysfunction, which are lacking. There are obstacles to these goals. Our group of MS researchers and clinicians with varied expertise took stock of the current state of the field, and we identify several important practical and theoretical challenges, including key knowledge gaps and methodologic limitations related to (1) understanding and measurement of cognitive deficits, (2) neuroimaging of neural bases and correlates of deficits, and (3) development of effective treatments. This is not a comprehensive review of the extensive literature, but instead a statement of guidelines and priorities for the field. For instance, we provide recommendations for improving the scientific basis and methodologic rigor for cognitive rehabilitation research. Toward this end, we call for multidisciplinary collaborations toward development of biologically based theoretical models of cognition capable of empirical validation and evidence-based refinement, providing the scientific context for effective treatment discovery.
    Type of Medium: Online Resource
    ISSN: 0028-3878 , 1526-632X
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2018
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  • 3
    In: Multiple Sclerosis Journal, SAGE Publications, Vol. 27, No. 1 ( 2021-01), p. 107-116
    Abstract: To build a model to predict cognitive status reflecting structural, functional, and white matter integrity changes in early multiple sclerosis (MS). Methods: Based on Symbol Digit Modalities Test (SDMT) performance, 183 early MS patients were assigned “lower” or “higher” performance groups. Three-dimensional (3D)-T2, T1, diffusion weighted, and resting-state magnetic resonance imaging (MRI) data were acquired in 3T. Using Random Forest, five models were trained to classify patients into two groups based on 1—demographic/clinical, 2—lesion volume/location, 3—local/global tissue volume, 4—local/global diffusion tensor imaging, and 5—whole-brain resting-state-functional-connectivity measures. In a final model, all important features from previous models were concatenated. Area under the receiver operating characteristic curve (AUC) values were calculated to evaluate classifier performance. Results: The highest AUC value (0.90) was achieved by concatenating all important features from neuroimaging models. The top 10 contributing variables included volumes of bilateral nucleus accumbens and right thalamus, mean diffusivity of left cingulum-angular bundle, and functional connectivity among hubs of seven large-scale networks. Conclusion: These results provide an indication of a non-random brain pattern mostly compromising areas involved in attentional processes specific to patients who perform worse in SDMT. High accuracy of the final model supports this pattern as a potential neuroimaging biomarker of subtle cognitive changes in early MS.
    Type of Medium: Online Resource
    ISSN: 1352-4585 , 1477-0970
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2021
    detail.hit.zdb_id: 2008225-3
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  • 4
    Online Resource
    Online Resource
    SAGE Publications ; 2012
    In:  Multiple Sclerosis Journal Vol. 18, No. 4 ( 2012-04), p. 409-417
    In: Multiple Sclerosis Journal, SAGE Publications, Vol. 18, No. 4 ( 2012-04), p. 409-417
    Abstract: Background: Functional magnetic resonance imaging (fMRI) studies of persons with multiple sclerosis (MS) reveal distinct patterns of activation during task performance. We were interested in determining whether distinct patterns of effective connectivity would be revealed with Granger causality analysis (GCA). Objective: To characterize directed neural connections in persons with MS during a processing speed task between brain regions known to be activated in healthy controls. Methods: fMRI and GCA were used to examine effective connectivity underlying performance of a processing speed task in persons with MS. In total, 16 individuals with MS and 17 healthy controls (HC) performed a modified version of the Symbol Digit Modality Task (mSDMT) in the MRI scanner. Eight seed regions were selected on the basis of a priori data showing areas involved in mSDMT performance of HC. Results: Behaviorally, the MS group attained a level of accuracy equivalent to the HC group, although they were significantly slower. While there was a great deal of overlap in the connections relied upon by both groups, the MS group showed significant differences in connectivity between critical brain regions. Specifically, the MS group had more connections from multiple regions to frontal cortices bilaterally relative to HCs. Conclusions: Greater neural recruitment by the MS group relative to HC is consistent with the neural efficiency hypothesis, and lends further support to the notion that more connections must be recruited to maintain performance in the presence of brain pathology.
    Type of Medium: Online Resource
    ISSN: 1352-4585 , 1477-0970
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2012
    detail.hit.zdb_id: 2008225-3
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  • 5
    In: Clinical Rehabilitation, SAGE Publications, Vol. 36, No. 10 ( 2022-10), p. 1305-1313
    Abstract: Anxiety is common among persons with MS (PwMS), but widely accepted treatments are lacking. Group-based interventions delivered via telehealth are an accessible treatment option requiring clinical trial evidence to support feasibility and initial efficacy. We conducted a pilot feasibility trial of an online support group intervention to reduce anxiety in PwMS. Methods A non-randomized, parallel arm clinical trial was conducted. A total of 31 PwMS were enrolled: 20 completed a 12-week telehealth-delivered support group intervention and 11 were assigned to a survey-only control group. Primary feasibility outcomes were adherence and completion rates. Primary efficacy outcome was anxiety, secondary outcomes were depression, loneliness, distress, self-efficacy, stress, and quality of life. Results Twenty-six participants completed the study. Intervention group adherence (75%) and completion (85%) rates were acceptable. Results indicated a medium size between-group effect, suggesting a greater reduction in anxiety in the intervention group compared to the control group [ U = 39.50, p = 0.045, r = 0.39]. No group differences in other outcomes were observed. Conclusion A telehealth-delivered support group intervention appears feasible for further study and shows initial efficacy for the reduction of anxiety in PwMS.
    Type of Medium: Online Resource
    ISSN: 0269-2155 , 1477-0873
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2028323-4
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  • 6
    In: BMJ Open, BMJ, Vol. 10, No. 11 ( 2020-11), p. e039691-
    Abstract: The many benefits of exercise for persons with multiple sclerosis (MS) are well established, yet patients often refrain from exercise due to overheating and exhaustion. The present randomised controlled trial tests aspirin (acetylsalicylic acid (ASA)) as a convenient method to prevent overheating and improve exercise performance in persons with MS. The effects of ASA are compared with those of acetaminophen (APAP) and placebo. Methods and analysis Participants are seen for a laboratory maximal exercise test on 3 separate days separated by at least 1 week. At each session, body temperature is measured before oral administration of a standard adult dose (650 mg) of ASA, APAP or placebo. One hour after drug administration, participants perform a maximal ramp test on a cycle ergometer. Primary outcomes are (a) time to exhaustion (that is, time spent cycling to peak exertion) and (b) body temperature change. Crossover analyses will include tests for effects of treatment, period, treatment–period interaction (carryover effect) and sequence. Ethics and dissemination Ethical approval was granted by the institutional review board at Columbia University Irving Medical Center (reference: AAAS2529). Results of the trial will be published in peer-reviewed scientific journals and presented at national and international conferences. Neurologists, physiatrists, primary care physicians and physiotherapists are important stakeholders and will be targeted during dissemination. Positive trial results have the potential to promote aspirin therapy, an inexpensive and readily available treatment, to reduce overheating and allow more persons with MS to benefit from exercise. Trial registration number NCT03824938 .
    Type of Medium: Online Resource
    ISSN: 2044-6055 , 2044-6055
    Language: English
    Publisher: BMJ
    Publication Date: 2020
    detail.hit.zdb_id: 2599832-8
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  • 7
    Online Resource
    Online Resource
    Springer Science and Business Media LLC ; 2018
    In:  Journal of Neurology Vol. 265, No. 3 ( 2018-3), p. 562-566
    In: Journal of Neurology, Springer Science and Business Media LLC, Vol. 265, No. 3 ( 2018-3), p. 562-566
    Type of Medium: Online Resource
    ISSN: 0340-5354 , 1432-1459
    RVK:
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2018
    detail.hit.zdb_id: 1421299-7
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  • 8
    In: Journal of Neuroimaging, Wiley, Vol. 32, No. 1 ( 2022-01), p. 36-47
    Abstract: This study aims todetermine the sensitivity of superficial white matter (SWM) integrity as a metric to distinguish early multiple sclerosis (MS) patients from healthy controls (HC). Methods Fractional anisotropy and mean diffusivity (MD) values from SWM bundles across the cortex and major deep white matter (DWM) tracts were extracted from 29 early MS patients and 31 age‐ and sex‐matched HC. Thickness of 68 cortical regions and resting‐state functional‐connectivity (RSFC) among them were calculated. The distribution of structural and functional metrics between groups were compared using Wilcoxon rank‐sum test. Utilizing a machine learning method (adaptive boosting), 6 models were built based on: 1‐SWM, 2‐DWM, 3‐SWM and DWM, 4‐cortical thickness, or 5‐RSFC measures. In model 6, all features from previous models were incorporated. The models were trained with nested 5‐folds cross‐validation. Area under the receiver operating characteristic curve (AUC roc ) values were calculated to evaluate classification performance of each model. Permutation tests were used to compare the AUC roc values. Results Patients had higher MD in SWM bundles including insula, inferior frontal, orbitofrontal, superior and medial temporal, and pre‐ and post‐central cortices ( p 〈 .05). No group differences were found for any other MRI metric. The model incorporating SWM and DWM features provided the best classification (AUC roc = 0.75). The SWM model provided higher AUC roc (0.74), compared to DWM (0.63), cortical thickness (0.67), RSFC (0.63), and all‐features (0.68) models ( p 〈 .001 for all). Conclusion Our results reveal a non‐random pattern of SWM abnormalities at early stages of MS even before pronounced structural and functional alterations emerge.
    Type of Medium: Online Resource
    ISSN: 1051-2284 , 1552-6569
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2035400-9
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  • 9
    Online Resource
    Online Resource
    Informa UK Limited ; 2011
    In:  Journal of Clinical and Experimental Neuropsychology Vol. 33, No. 5 ( 2011-06), p. 580-586
    In: Journal of Clinical and Experimental Neuropsychology, Informa UK Limited, Vol. 33, No. 5 ( 2011-06), p. 580-586
    Type of Medium: Online Resource
    ISSN: 1380-3395 , 1744-411X
    Language: English
    Publisher: Informa UK Limited
    Publication Date: 2011
    detail.hit.zdb_id: 1479533-4
    SSG: 5,2
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  • 10
    Online Resource
    Online Resource
    Wiley ; 2010
    In:  PM&R Vol. 2, No. 5 ( 2010-05), p. 332-337
    In: PM&R, Wiley, Vol. 2, No. 5 ( 2010-05), p. 332-337
    Abstract: Describe and define the concept of central fatigue, as well as discuss the behavioral and neuroimaging studies that attempt its assessment and measurement. A brief description of how fatigue can be differentiated from psychiatric symptoms and from sleepiness is also provided. Promising directions for future research will be outlined in the final portion of this review. Despite its popular clinical use as a descriptor of certain symptomatology, fatigue is not a unitary construct. Describing central fatigue as distinct from peripheral fatigue represents one way of understanding the underlying neural and behavioral concomitants of fatigue.
    Type of Medium: Online Resource
    ISSN: 1934-1482 , 1934-1563
    Language: English
    Publisher: Wiley
    Publication Date: 2010
    detail.hit.zdb_id: 2480906-8
    SSG: 31
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