scholarly journals Moderators of Dual Task Gait Effects in Mild Cognitive Impairment and Dementia

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 880-880
Author(s):  
Edward Ofori ◽  
Dara James ◽  
Olivia Kaczmarek ◽  
Mark Gudesblatt
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Dual Task ◽  
Walking Speed ◽  
Cognitive Domain ◽  
Spatial Processing ◽  
Spatial Skills ◽  
Visual Spatial ◽  
Visual Spatial Processing ◽  
Domain Scores

Abstract Spatiotemporal gait parameters may provide indication about the cognitive status of individuals. Dysfunction in specific gait features has been associated with increased risk of cognitive decline. Here we use spatiotemporal gait patterns to determine whether specific cognitive domain scores moderate the effects during dual-tasking on individuals with mild cognitive impairment (MCI) and dementia. Participants (n=46; mean age: 77.0±8.9 years) with a diagnosis of cognitive impairment (n=16), or dementia (n=30) were included. They performed validated computerized cognitive assessment battery (CAB, NeuroTrax BrainCare) to obtain cognitive domain measures of executive function (EF), attention, memory, visual-spatial processing (VSP), information processing speed (IPS), and a global cognitive score (GCS) measure. Using the Zeno Walkway Gait Analysis System (Protokinetics), measures of velocity, stride width (SW), stride time (ST), stride length, cadence, double support (DS), and gait variability were obtained for both single-task and DT gait. Data analysis was conducted using SPSS 26 and PROCESS 3.5. As expected, the dementia group had lower cognitive domain scores and slower walking speed than MCI group. Results also indicated that visual-spatial processing skills was the only cognitive domain that did have a moderation effect on gait velocity (F=4.2, p<0.05, R-square change 10%). Our results indicate that differences between walking speed in MCI and dementia groups are moderated by visual spatial skills. Improvement in visual spatial skills could improve the dual task effects of individual gait measures.

scholarly journals The Effect of CAG Repeats within the Non-Pathological Range in the HTT Gene on Cognitive Functions in Patients with Subjective Cognitive Decline and Mild Cognitive Impairment

Diagnostics ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1051
Author(s):  
Valentina Bessi ◽  
Salvatore Mazzeo ◽  
Silvia Bagnoli ◽  
Giulia Giacomucci ◽  
Assunta Ingannato ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Cognitive Decline ◽  
Spatial Ability ◽  
Cognitive Status ◽  
Cag Repeat ◽  
Cag Repeats ◽  
Subjective Cognitive Decline ◽  
Visual Spatial ◽  
Premorbid Intelligence

The Huntingtin gene (HTT) is within a class of genes containing a key region of CAG repeats. When expanded beyond 39 repeats, Huntington disease (HD) develops. Individuals with less than 35 repeats are not associated with HD. Increasing evidence has suggested that CAG repeats play a role in modulating brain development and brain function. However, very few studies have investigated the effect of CAG repeats in the non-pathological range on cognitive performances in non-demented individuals. In this study, we aimed to test how CAG repeats’ length influences neuropsychological scores in patients with subjective cognitive decline (SCD) and mild cognitive impairment (MCI). We included 75 patients (46 SCD and 29 MCI). All patients underwent an extensive neuropsychological battery and analysis of HTT alleles to quantify the number of CAG repeats. Results: CAG repeat number was positively correlated with scores of tests assessing for executive function, visual–spatial ability, and memory in SCD patients, while in MCI patients, it was inversely correlated with scores of visual–spatial ability and premorbid intelligence. When we performed a multiple regression analysis, we found that these relationships still remained, also when adjusting for possible confounding factors. Interestingly, logarithmic models better described the associations between CAG repeats and neuropsychological scores. CAG repeats in the HTT gene within the non-pathological range influenced neuropsychological performances depending on global cognitive status. The logarithmic model suggested that the positive effect of CAG repeats in SCD patients decreases as the number of repeats grows.

P4-158: Dual-task gait performance in mild cognitive impairment may predict Alzheimer's disease conversion

2013 ◽  
Vol 9 ◽  
pp. P764-P764
Author(s):  
Mei Sian Chong ◽  
Laura Tay ◽  
Peng Chew Mark Chan ◽  
Noorhazlina Ali ◽  
Pamela Chew ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Dual Task ◽  
Gait Performance

Mild Cognitive Impairment Affects Obstacle Negotiation in Older Adults: Results from “Gait and Brain Study”

Gerontology ◽  
2018 ◽  
Vol 65 (2) ◽  
pp. 164-173 ◽  
Author(s):  
Frederico Pieruccini-Faria ◽  
Yanina Sarquis-Adamson ◽  
Manuel Montero-Odasso
Keyword(s):  
Older Adults ◽  
Cognitive Impairment ◽  
Executive Function ◽  
Mild Cognitive Impairment ◽  
Dual Task ◽  
Gait Speed ◽  
Step Length ◽  
Gait Control ◽  
Dual Tasking ◽  
Brain Study

Background: Older adults with Mild Cognitive Impairment (MCI) are at higher risk of falls and injuries, but the underlying mechanism is poorly understood. Inappropriate anticipatory postural adjustments to overcome balance perturbations are affected by cognitive decline. However, it is unknown whether anticipatory gait control to avoid an obstacle is affected in MCI. Objective: Using the dual-task paradigm, we aim to assess whether gait control is affected during obstacle negotiation challenges in older adults with MCI. Methods: Seventy-nine participants (mean age = 72.0 ± 2.7 years; women = 30.3%) from the “Gait and Brain Study” were included in this study (controls = 27; MCI = 52). In order to assess the anticipatory control behaviour for obstacle negotiation, a 6-m electronic walkway embedded with sensors recorded foot prints to measure gait speed and step length variability, during early (3 steps before the late phase) and late (3 steps before the obstacle) pre-crossing phases of an ad hoc obstacle, set at 15% of participant’s height. Participants walked under single- and dual-task gait (counting backwards by 1’s from 100 while walking) conditions. Three-way mixed repeated-measures analysis of variance models examined differences in gait performance between groups when transitioning between pre-crossing phases towards an obstacle during single- and dual-task conditions. Analyses were adjusted for age, sex, years of education, lower limb function, fear of falling, medical status, depressive symptoms, baseline gait speed and executive function. Results: A significant three-way interaction among groups, pre-crossing phases and task showed that participants with MCI attenuated the gait deceleration (p = 0.02) and performed fewer step length adjustments (p = 0.03) when approaching the obstacle compared with controls while dual-tasking. These interactions were attenuated when executive function performance was added as a covariate in the adjusted statistical model. Conclusion: Older adults with MCI attenuate the anticipatory gait adjustments needed to avoid an obstacle when dual-tasking. Deficits in higher-order cognitive processing may limit obstacle negotiation capabilities in MCI populations, being a potential falls risk factor.

scholarly journals Cognitive Domain Decline in Healthy Apolipoprotein E ε4 Homozygotes Before the Diagnosis of Mild Cognitive Impairment

2007 ◽  
Vol 64 (9) ◽  
pp. 1306 ◽  
Author(s):  
Richard J. Caselli ◽  
Eric M. Reiman ◽  
Dona E. C. Locke ◽  
Michael L. Hutton ◽  
Joseph G. Hentz ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Apolipoprotein E ◽  
Cognitive Domain

scholarly journals Walking Speed is the Sole Determinant of Mild Cognitive Impairment in Japanese Patients with type 2 Diabetes Mellitus

2020 ◽  
Author(s):  
Noritaka Machii ◽  
Akihiro Kudo ◽  
Haruka Saito ◽  
Hayato Tanabe ◽  
Mariko Iwasaki ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Walking Speed ◽  
Japanese Patients ◽  
Duration Of Diabetes ◽  
Skeletal Mass

Diabetes is a risk factor for mild cognitive impairment (MCI) and dementia. However, how the clinical characteristics of type 2 diabetic patients with MCI are linked to sarcopenia and/or its criterion remain to be elucidated. Japanese patients with type 2 diabetes mellitus were categorized into the MCI group for MoCA-J (the Japanese version of the Montreal cognitive assessment) score <26, and into the non-MCI group for MoCA-J ≥26. Sarcopenia was defined by a low skeletal mass index along with low muscle strength (handgrip strength) or low physical performance (walking speed <1.0 m/s). Univariate and multivariate-adjusted odds ratio models were used to determine the independent contributors for MoCA-J <26. Among 438 participants, 221 (50.5%) and 217 (49.5%) comprised the non-MCI and MCI groups, respectively. In the MCI group, age (61 ± 12 vs. 71 ± 10 years, p < 0.01) and duration of diabetes (14 ± 9 vs. 17 ± 9 years, p < 0.01) were higher than those in the non-MCI group. Patients in the MCI group exhibited lower hand grip strength, walking speed, and skeletal mass index, but higher prevalence of sarcopenia. Only walking speed (rather than muscle loss or muscle weakness) was found to be an independent determinant of MCI after adjusting for multiple factors, such as age, gender, BMI, duration of diabetes, hypertension, dyslipidemia, smoking, drinking, eGFR, HbA1c, and history of coronary heart diseases and stroke. In subgroup analysis, a group consisting of male patients aged ≥65 years, with BMI <25, showed a significant OR for walking speed. This is the first study to show that slow walking speed is a sole determinant for the presence of MCI in patients with type 2 diabetes. It was suggested that walking speed is an important factor in the prediction and prevention of MCI development in patients with diabetes mellitus.

Characteristics of Cognitive Deficit in Amnestic Mild Cognitive Impairment With Subthreshold Depression

2019 ◽  
Vol 32 (6) ◽  
pp. 344-353 ◽  
Author(s):  
Zhiyu Sun ◽  
Zhijiang Wang ◽  
Lujie Xu ◽  
Xiaozhen Lv ◽  
Quanzheng Li ◽  
...  
Keyword(s):  
Working Memory ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Language Processing ◽  
Working Memory Capacity ◽  
The Elderly ◽  
Amnestic Mild Cognitive Impairment ◽  
Cognitive Domain ◽  
Subthreshold Depression ◽  
Cognitive Assessments

It is widely recognized that depression may precipitate the incidence of dementia in the elderly individuals and individuals with amnestic mild cognitive impairment (aMCI) in particular. However, the association between subthreshold depression (SD) and cognitive deficits in patients with aMCI remains unclear. To address this, we collected demographic information and conducted a battery of neuropsychological cognitive assessments in 33 aMCI participants with SD (aMCI/SD+), 33 nondepressed aMCI participants (aMCI/SD−), and 53 normal controls (NC). Both aMCI groups showed significantly poorer performance in most cognitive domains relative to the NC group (ie, memory, language, processing speed, and executive function). Notably, the aMCI/SD+ group showed significantly poorer attention/working memory compared with the aMCI/SD− group. Multiple linear regression analyses revealed a significant negative association between the severity of depressive symptoms and attention/working memory capacity (β = − .024, P = .024), accounting for 8.28% of the variations in this cognitive domain. All statistical analyses were adjusted by age, sex, and years of education. A logistic regression model had an accuracy of 72.4% in discriminating between the aMCI/SD+ and aMCI/SD− groups based on individual cognitive profiles over 6 domains. Our findings indicate that patients with aMCI with and without SD have distinct patterns of cognitive impairment. This finding may facilitate the diagnosis and treatment of SD in patients with aMCI.

Diagnostic utility of sound naming in early Alzheimer’s disease

2009 ◽  
Vol 15 (2) ◽  
pp. 231-238 ◽  
Author(s):  
HYEON-AE JEON ◽  
KYOUNG-MIN LEE
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Picture Naming ◽  
Temporal Cortex ◽  
Cognitive Domain ◽  
Diagnostic Utility ◽  
Future Studies ◽  
Early Alzheimer’S Disease

AbstractWhile it is well known that picture naming (PN) is impaired in Alzheimer’s disease (AD), sound naming (SN) has not been thoroughly investigated. We postulated that SN might be impaired more severely and earlier than PN, given the early involvement of the temporal cortex by AD-related pathology. SN and PN were assessed in 21 normal participants, 40 patients with mild cognitive impairment (MCI), and 27 patients in early stages of AD. Our results showed that SN accuracy and latency were more sensitive to advancing pathology in AD than PN accuracy and latency. SN was more useful and specific in distinguishing MCI patients from normal participants and therefore in potentially identifying the subset of MCI patients who already have impairment in more than one cognitive domain and may actually have incipient AD. These findings indicate a potential diagnostic utility of SN for early detection of the disease. Furthermore, even though most AD patients demonstrated more or less comparable impairment in both tasks, some were disproportionately impaired on SN and others were differentially impaired on PN. Future studies may be able to show that these discrepant groups correspond to patients with right and left hemisphere predominant AD, respectively. (JINS, 2009, 15, 231–238.)

scholarly journals ATTITUDES AND PREFERENCES FOR ROBOT-LED PIANO COGNITIVE TRAINING: FEASIBILITY IN MILD COGNITIVE IMPAIRMENT

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S946-S946
Author(s):  
George Mois ◽  
Bailley Collette ◽  
Lisa M Renzi-Hammond ◽  
Laura Boccanfuso ◽  
Aditi Ramachandran ◽  
...  
Keyword(s):  
Older Adults ◽  
Cognitive Impairment ◽  
Mild Cognitive Impairment ◽  
Technology Acceptance ◽  
Cognitive Training ◽  
Neural Plasticity ◽  
Verbal Memory ◽  
Cognitive Status ◽  
Cognitive Domain ◽  
Assistive Robots

Abstract Cognitive training has been shown to improve neural plasticity, increase cognitive reserve and reduce the risk of dementia in older adults. Specifically, learning to play the piano has been shown to be an engaging, multimodal form of cognitive training. However, accessing this form of cognitive training can pose a challenge for older adults. Socially assistive robots present a unique opportunity to increase access to user-tailored piano learning cognitive training. The present study utilized a robot-led four-week piano lesson feasibility intervention for older adults with mild cognitive impairment (N = 11; M= 74.64 ± 6.02 years of age; 72.72% female; 90.1% White/Caucasian). Cognitive Status was assessed during screening via the Telephone Interview for Cognitive Status, and after screening via the Mini-Mental State Exam and the CNS Vital Signs computerized test suite to measure cognitive domain-specific functioning. Perceptions and acceptance of the robot were measured using the Robotic Social Attributes Scale (RoSAS) and Technology Acceptance Scale. Cognitive function improved after four weeks of training in the verbal memory, executive function, reaction time and cognitive flexibility domains, and in the computed neurocognitive index score (p<0.05). Survey data and qualitative interviews show that participants perceived the robot instructor as socially engaging, competent, useful, and easy to use. These results provide insight into the potential of SARs to facilitate cognitive training in the form of piano lessons, as well as recommendations for creating a suitable robot instructor for this application.

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