scholarly journals Does Acute Exercise Stress Affect Postural Stability and Cognitive Function in Subjects with Chronic Ankle Instability?

2021 ◽  
Vol 11 (6) ◽  
pp. 788
Author(s):  
Miriam Peri ◽  
Uri Gottlieb ◽  
Aharon S. Finestone ◽  
Shmuel Springer
Keyword(s):  
Information Processing ◽  
Cognitive Function ◽  
Postural Control ◽  
Postural Stability ◽  
Acute Exercise ◽  
Spatial Perception ◽  
Ankle Instability ◽  
Cognitive Score ◽  
Cognitive Domains ◽  
Visual Spatial

Altered postural control in people with chronic ankle instability (CAI) may be attributed to deficits that are associated with neurocognitive function. Acute training is another factor that may negatively affect postural control and increase the risk of ankle sprain. The purpose of this investigation was to determine the effect of acute exercise on postural stability and cognitive function among patients with CAI. Fifteen patients with CAI (aged 21.5 ± 2.0 years) and 15 healthy controls (aged 20.3 ± 1.7 years) completed a single-limb stance postural control test and a battery of computer-based cognitive tests before and after acute exercise. The overall stability index (OSI) was used as a measure of postural stability. The cognitive domains tested were global cognitive score, executive function, attention, visual-spatial perception, information processing, and fine motor control. Subjects in both groups had similar OSI scores, with a trend for reduced stability in the CAI after the exercise protocol (p = 0.053). There were no differences between the groups in all cognitive domains before or after exercise. Following exercise, the domains of overall cognitive score, visual-spatial perception, and information processing speed improved in both groups (p = 0.003, p = 0.033, p = 0.001; respectively). These findings should be considered with caution due to the heterogeneity of the CAI population.

Relationships between violent video games and cognition

2017 ◽  
Vol 7 (2) ◽  
pp. 58-70
Author(s):  
Nur Baser Baykal ◽  
Metehan Irak
Keyword(s):  
Working Memory ◽  
Information Processing ◽  
Object Recognition ◽  
Video Games ◽  
Spatial Perception ◽  
Reaction Times ◽  
Violent Video Games ◽  
Visual Spatial ◽  
Game Addiction ◽  
Memory Object

AbstractObjectives: The differential effects of playing violent video games on information processing has become an issue of concern. Neuropsychological studies provide inconsistent results regarding the effects of playing excessive video games on information processing. The goal of this study was to investigate the effect of violent video games on various cognitive processes, specifically working memory, object recognition, and visual-spatial perception. The relationships between violent video game addiction and aggression, personality, and craving were also investigated. Method: 54 university students were classified into three different groups (addicted, risk, and control) according to the time they spent game playing and their Game Addiction Scale scores. Results: Game addicted individuals have higher scores on aggression, craving, urging, and psychoticism than other groups. Significant differences in reaction times during cognitive tasks were also found. The game addicted group’s reaction times were significantly faster than for risk and non-player groups. Conclusion: This study supports previous findings that violent game playing is related with aggressive thoughts, craving, and urging. However, violent game addiction does not have negative effects on working memory, object recognition, and visual-spatial perception. Keywords: Game addiction, violent games, aggression, cognition.

The Effects of Acute and Long-Term Whole-Body Vibration Training on the Postural Control During Cognitive Task in Patients With Chronic Ankle Instability

2021 ◽  
pp. 1-8
Author(s):  
Seyed Abolfazl Tohidast ◽  
Rasool Bagheri ◽  
Ziaeddin Safavi-Farokhi ◽  
Mohammad Khaleghi Hashemian ◽  
Cyrus Taghizadeh Delkhosh
Keyword(s):  
Postural Control ◽  
Postural Stability ◽  
Center Of Pressure ◽  
Ankle Instability ◽  
Lateral Displacement ◽  
Whole Body Vibration ◽  
Chronic Ankle Instability ◽  
Whole Body ◽  
Body Vibration ◽  
The Mean

Context: Chronic ankle instability (CAI) is a common problem associated with impaired postural stability. Whole-body vibration (WBV) has been developed to improve muscle function and reportedly improves postural stability. The aim of this study was to evaluate the effect of 12 sessions of WBV on postural control during standing postural task in participants with CAI. Design: A controlled clinical trial study. Methods: Sixteen participants with CAI and 16 healthy participants aged between 20 and 40 years included in this study. They received WBV (30-Hz frequency, 3 series of four 45-s exercises with a 45-s rest) for a total of 12 sessions, 2 session per week for 6 weeks. Postural control was assessed by center of pressure (COP) parameters, including mean and SD in the anterior–posterior and medial–lateral displacement during single-leg standing. Assessments were done before and immediately after the first session and after the 12th session of WBV, with opened and closed eyes associated with easy and difficult cognitive tasks. Results: The results showed that the SD of COP displacement in the x-axis was significant in eyes opened and SD of COP displacement in the x- and y-axes were significant between groups in the eyes-opened, and eyes-closed conditions (P < .05). Analysis of variance indicated that the effect of WBV training was significant for the mean of COP displacement in the y-axis. Post hoc indicated that the effect of 12 sessions of WBV on the mean of COP displacement was significant in the CAI group (P < .05). However, the acute effect of WBV was not significant on the COP displacement in all axes (P > .05). Conclusion: Higher postural sway associated with postural cognitive interactions might be considered in the rehabilitation of CAI. Twelve sessions of WBV might induce some improvement in postural control with the method of WBV used in this study.

Aerobic fitness and multidomain cognitive function in advanced age

2010 ◽  
Vol 23 (1) ◽  
pp. 114-124 ◽  
Author(s):  
Yael Netz ◽  
Tzvi Dwolatzky ◽  
Yael Zinker ◽  
Esther Argov ◽  
Ruth Agmon
Keyword(s):  
Cognitive Function ◽  
Physical Fitness ◽  
Controlled Trial ◽  
Cardiovascular Fitness ◽  
Advanced Age ◽  
Neuropsychological Battery ◽  
Cognitive Score ◽  
Cognitive Domains ◽  
And Function ◽  
The Relationship

ABSTRACTBackground: Studies generally describe the relationship between physical fitness and cognitive function by measuring only one or two specific cognitive tasks. In addition, in spite of the significant increase in life expectancy, the age of participants in these studies does not extend beyond a mean age of 70 years. This study was thus designed to examine the relationship between physical fitness and function in multiple cognitive domains in subjects older than those previously reported.Methods: Thirty-eight individuals, aged 65.3 to 85.3 years, performed a graded, progressive, maximal exercise test. Based on a median score of peak VO2, participants were divided into low-fitness and moderately-fit groups. Cognitive function was assessed by means of a computerized neuropsychological battery.Results: The moderately-fit group achieved significantly better scores on the global cognitive score (U = 97, p = 0.04), and a significant correlation was found between peak VO2 and attention, executive function, and global cognitive score (rs = .37, .39, .38 respectively). The trend for superior cognitive scores in the moderate-fitness compared to the low-fitness groups was unequivocal, both in terms of accuracy and reaction time.Conclusion: Maintenance of higher levels of cardiovascular fitness may help protect against cognitive deterioration, even at an advanced age. An adequately powered randomized controlled trial should be performed to further evaluate this hypothesis.

Association Between Occupational Exposure to Formaldehyde and Cognitive Impairment

Neurology ◽  
2021 ◽  
pp. 10.1212/WNL.0000000000013146
Author(s):  
Noemie Letellier ◽  
Laure-Anne Gutierrez ◽  
Corinne Pilorget ◽  
Fanny Artaud ◽  
Alexis Descatha ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Cognitive Function ◽  
Occupational Exposure ◽  
Exposure Duration ◽  
Dose Effect ◽  
Cumulative Exposure ◽  
Cognitive Score ◽  
Cognitive Domains ◽  
Recent Exposure ◽  
Formaldehyde Exposure

Objective:To our knowledge, no study has investigated the effect of exposure to formaldehyde on cognition in the general population. Our objective was to examine the association between occupational exposure to formaldehyde and cognitive impairment in middle-aged and young- old adults (≥45 years).Methods:In the French CONSTANCES cohort, cognitive function was assessed with a standardized battery of seven cognitive tests to evaluate global cognitive function, episodic verbal memory, language abilities and executive functions (e.g., Digit Symbol Substitution Test, DSST). A global cognitive score was created using principal component analysis. Cognitive impairment was assessed in reference to norms of neuropsychological battery according to age, sex and education. Lifetime exposure to formaldehyde was assessed using a French job-exposure matrix created in the framework of the Matgéné project. After performing multiple imputation, separate modified Poisson regression models were used to evaluate the association between cognitive impairment (<25th percentile) and formaldehyde exposure (exposed/never exposed), exposure duration, cumulative exposure index (CEI), and combination of CEI and time of last exposure.Results:Among 75 322 participants (median age: 57.5 years, women: 53%), 8% were exposed to formaldehyde during their professional life. These participants were at higher risk of global cognitive impairment (for global cognitive score: adjusted relative risk, aRR, 1.17, 95% confidence interval, CI: 1.11-1.23), after adjusting for confounders (age, sex, education, income, solvent exposure, Effort–Reward Imbalance, night-shift, repetitive, and noisy work). They were at higher risk of cognitive impairment for all cognitive domains explored. Longer exposure duration and high CEI were associated with cognitive impairment, with a dose-effect relationship for exposure duration. Recent exposure was associated with impairment in all cognitive domains. Time did not fully attenuate formaldehyde-associated cognitive deficits especially in highly exposed individuals (for DSST: high past exposure aRR 1.23, 95%CI: 1.11-1.36; high recent exposure: aRR 1.24, 95%CI: 1.13-1.35).Conclusion:Our findings highlight the long-term detrimental effect of formaldehyde exposure on cognitive health in a relatively young population.

scholarly journals The specific impact of uremic toxins upon cognitive domains: a review

2019 ◽  
Vol 41 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Álvaro de Oliveira Franco ◽  
Rodrigo Tzovenos Starosta ◽  
Matheus Roriz-Cruz
Keyword(s):  
Chronic Kidney Disease ◽  
Uric Acid ◽  
Cognitive Impairment ◽  
Information Processing ◽  
Parathyroid Hormone ◽  
Kidney Disease ◽  
Uremic Toxins ◽  
Cognitive Domains ◽  
Visual Spatial ◽  
Specific Impact

ABSTRACT One of the mechanisms proposed for chronic kidney disease (CKD)-related cognitive impairment is the accumulation of uremic toxins due to the deterioration of the renal clearance function. Cognition can be categorized into five major domains according to its information processing functions: memory, attention, language, visual-spatial, and executive. We performed a review using the terms 'uric acid', 'indoxyl sulfate', 'p-cresyl sulfate', 'homocysteine', 'interleukins' and 'parathyroid hormone'. These are the compounds that were found to be strongly associated with cognitive impairment in CKD in the literature. The 26 selected articles point towards an association between higher levels of uric acid, homocysteine, and interleukin 6 with lower cognitive performance in executive, attentional, and memory domains. We also reviewed the hemodialysis effects on cognition. Hemodialysis seems to contribute to an amelioration of CKD-related encephalopathic dysfunction, although this improvement occurs more in some cognitive domains than in others.

scholarly journals Association between Community Ambulation Walking Patterns and Cognitive Function in Patients with Parkinson’s Disease: Further Insights into Motor-Cognitive Links

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Aner Weiss ◽  
Talia Herman ◽  
Nir Giladi ◽  
Jeffrey M. Hausdorff
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Executive Function ◽  
Cognitive Function ◽  
Postural Control ◽  
Real Life ◽  
Gait Pattern ◽  
Cognitive Score ◽  
Nonverbal Memory ◽  
Computerized Measures

Background. Cognitive function is generally evaluated based on testing in the clinic, but this may not always reflect real-life function. We tested whether parameters derived from long-term, continuous monitoring of gait are associated with cognitive function in patients with Parkinson’s disease (PD).Methods. 107 patients with PD (age: 64.9 ± 9.3 yrs; UPDRS motor sum “off”: 40.4 ± 13.2; 25.23% women) wore a 3D accelerometer on their lower back for 3 days. Computerized measures of global cognitive function, executive function, attention, and nonverbal memory were assessed. Three-day acceleration derived measures included cadence, variability, bilateral coordination, and dynamic postural control. Associations between the acceleration derived measures and cognitive function were determined.Results. Linear regression showed associations between vertical gait variability and cadence and between global cognitive score, attention, and executive function (p≤0.048). Dynamic postural control was associated with global cognitive score and attention (p≤0.027). Nonverbal memory was not associated with the acceleration-derived measures.Conclusions. These findings suggest that metrics derived from a 3-day worn body-fixed sensor reflect cognitive function, further supporting the idea that the gait pattern may be altered as cognition declines and that gait provides a window into cognitive function in patients with PD.

POSTURAL STABILITY IN PATIENTS WITH LATENT TRIGGER ZONES OF NECK MUSCULATURE

2019 ◽  
pp. 114-123
Author(s):  
E.R. Mukhametova ◽  
A.D. Militskova ◽  
T.V. Baltina
Keyword(s):  
Postural Control ◽  
Postural Stability ◽  
Test Group ◽  
Trigger Points ◽  
Control Group ◽  
Neck Muscle ◽  
Pressure Center ◽  
Cervical Muscles ◽  
Equilibrium Function ◽  
Romberg Test

There are many reasons for postural disorder development, but dysfunction of the cervical spine muscles is the most disputable reason. The purpose of the study is to reveal the influence of latent myogenic trigger zones of the cervical muscles on postural resistance. Materials and Methods. The authors used the method of computer posturography. Latent myogenic trigger zones (LMTZs) were determined by an indurated nodule or bundle in the neck muscle and by hyperesthesia in this zona. Assessment of postural resistance in subjects with LMTZs was carried out using standard posturography tests and Romberg test. Both classical and vector indicators were evaluated in a standard sample. Results. In fact, only vector indicators changed significantly in subjects with multiple LMTZs (4 or more). Thus, a decrease in the equilibrium function quality was established, as well as an increase in the average linear velocity of the pressure center and an increase in the normalized vectorogram area if compared with the indices in the control group and the group with sporadic LMTZs (from 1 to 3). The obtained results indicate a postural control decrease in individuals with multiple LMTZs. Subjects with sporadic LMTZs demonstrated a significant decrease in classical and a number of vector indicators, which shows the improvement in postural resistance in this test group. In Romberg test, all subjects with LMTZs, regardless of the zone number, showed an increasd Romberg coefficient. Conclusion. Multiple LMTZs of cervical muscles can reduce postural stability through increased afferentation from the cervical proprioreceptors. It is more obvious during in case of eye control elimination. Keywords: latent myogenic trigger points, postural control, posturography, Romberg test. Выделяют множество причин развития постуральных нарушений, среди которых дисфункция мышц шейного отдела позвоночника является наиболее спорной. Цель исследования. Выявить влияние латентных миогенных триггерных зон шейной мускулатуры на постуральную устойчивость. Материалы и методы. Использовался метод компьютерной стабилографии. Латентные миогенные триггерные зоны (лМТЗ) определялись по наличию в мышце шеи уплотненного узелка или пучка и по повышенной болевой чувствительности в этой области. Оценка постуральной устойчивости у испытуемых с лМТЗ осуществлялась с помощью стандартного стабилографического тестирования и теста Ромберга. В стандартной пробе оценивались как классические, так и векторные показатели. Результаты. Показано, что у испытуемых с множественными лМТЗ (4 и более) достоверно изменяются только векторные показатели. Так, установлено снижение качества функции равновесия, а также повышение средней линейной скорости центра давления и увеличение нормированной площади векторограммы по сравнению показателями в группе контроля и группе с единичными лМТЗ (от 1 до 3), что указывает на снижение постурального контроля у лиц с множественными лМТЗ. У испытуемых с единичными лМТЗ отмечено достоверное снижение классических показателей и ряда векторных, что свидетельствует об улучшении постуральной устойчивости в данной группе испытуемых. В пробе Ромберга все субъекты с лМТЗ независимо от количества последних показали повышение коэффициента Ромберга. Выводы. Множественные лМТЗ шейной мускулатуры могут снизить постуральную устойчивость через усиление афферентации от шейных проприорецепторов, что наиболее выражено при элиминации зрительного контроля. Ключевые слова: латентные миогенные триггерные точки, постуральный контроль, стабилография, тест Ромберга.

scholarly journals An Evaluation of DNA Methyltransferase 1 (DNMT1) Single Nucleotide Polymorphisms and Chemotherapy-Associated Cognitive Impairment: A Prospective, Longitudinal Study

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Alexandre Chan ◽  
Angie Yeo ◽  
Maung Shwe ◽  
Chia Jie Tan ◽  
Koon Mian Foo ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cognitive Impairment ◽  
Cognitive Function ◽  
Cancer Patients ◽  
Dna Methyltransferase ◽  
Dna Methyltransferases ◽  
Breast Cancer Patients ◽  
Prospective Longitudinal Study ◽  
Cognitive Domains ◽  
Prospective Longitudinal

Abstract Strong evidence suggests that genetic variations in DNA methyltransferases (DNMTs) may alter the downstream expression and DNA methylation patterns of neuronal genes and influence cognition. This study investigates the association between a DNMT1 polymorphism, rs2162560, and chemotherapy-associated cognitive impairment (CACI) in a cohort of breast cancer patients. This is a prospective, longitudinal cohort study. From 2011 to 2017, 351 early-stage breast cancer patients receiving chemotherapy were assessed at baseline, the midpoint, and the end of chemotherapy. DNA was extracted from whole blood, and genotyping was performed using Sanger sequencing. Patients’ self-perceived cognitive function and cognitive performance were assessed at three different time points using FACT-Cog (v.3) and a neuropsychological battery, respectively. The association between DNMT1 rs2162560 and cognitive function was evaluated using logistic regression analyses. Overall, 33.3% of the patients reported impairment relative to baseline in one or more cognitive domains. Cognitive impairment was observed in various objective cognitive domains, with incidences ranging from 7.2% to 36.9%. The DNMT1 rs2162560 A allele was observed in 21.8% of patients and this was associated with lower odds of self-reported cognitive decline in the concentration (OR = 0.45, 95% CI: 0.25–0.82, P = 0.01) and functional interference (OR = 0.48, 95% CI: 0.24–0.95, P = 0.03) domains. No significant association was observed between DNMT1 rs2162560 and objective cognitive impairment. This is the first study to show a significant association between the DNMT1 rs2162560 polymorphism and CACI. Our data suggest that epigenetic processes could contribute to CACI, and further studies are needed to validate these findings.

The effect of workload, work experience and inclined standing surface on visual spatial perception: Fall potential/prevention implications

2003 ◽  
Vol 3 (4) ◽  
pp. 251-259
Author(s):  
Laurel Kincl ◽  
Amit Bhattacharya ◽  
Paul Succop ◽  
Angshuman Bagchee
Keyword(s):  
Work Experience ◽  
Spatial Perception ◽  
Parameter Estimates ◽  
Industrial Workers ◽  
Job Experience ◽  
Horizontal Orientation ◽  
Visual Spatial ◽  
Visual Inputs ◽  
Inclined Surfaces ◽  
Main Effects

Maintenance of upright balance involves interplay between sensory (somatosensory, vestibular and visual) inputs and neuro-motor outputs. Visual spatial perception (VSP) of vertical and horizontal orientation plays a significant role in the maintenance of upright balance. For this experiment, a custom designed computer program randomly generated 42 images of horizontal and vertical lines at various angles for 60 industrial workers (39 ± 9.8 years). Half of the workers had more than three years of experience working on inclined and/or elevated surfaces. The main effects investigated included within subject factors of standing surface inclination (0°, 14° and 26°), job experience (number of months), and postural workload (0%, 50% or 100%). The VSP outcome measure was the count of correct responses to the angles presented. The inclination did not have a significant effect on VSP, but the parameter estimates indicated less correct responses on the inclined surfaces. The postural workload significantly affected the VSP, indicating that with increased workload, less correct responses were given. Finally, job experience was found to improve VSP response scores. In summary, these results indicate that job experience increases accurate VSP, while workloads and inclined work surfaces decrease accurate VSP responses.

scholarly journals Adjunctive cognitive remediation for schizophrenia using yoga: an open, non-randomised trial

2012 ◽  
Vol 24 (2) ◽  
pp. 91-100 ◽  
Author(s):  
Triptish Bhatia ◽  
Akhilesh Agarwal ◽  
Gyandeepak Shah ◽  
Joel Wood ◽  
Jan Richard ◽  
...  
Keyword(s):  
Cognitive Function ◽  
Randomised Trial ◽  
Cognitive Remediation ◽  
Cognitive Domain ◽  
Medium Effect ◽  
Major Depressive ◽  
Treatment As Usual ◽  
Cognitive Domains ◽  
Yoga Therapy ◽  
Persons With Schizophrenia

Background:Yoga therapy (YT) improves cognitive function in healthy individuals, but its impact on cognitive function among persons with schizophrenia (SZ) has not been investigated.Objective:To evaluate the adjunctive YT for cognitive domains impaired in SZ.Methods:Patients with SZ received YT or treatment as usual (TAU;n= 65,n= 23, respectively). Accuracy and speed for seven cognitive domains were assessed using a computerised neurocognitive battery (CNB), thus minimising observer bias. Separately, YT was evaluated among patients with bipolar I disorder (n= 40), major depressive disorder (n= 37) and cardiology outpatients (n= 68). All patients also received routine pharmacotherapy. Patients were not randomised to YT or TAU.Results:In comparison with the SZ/TAU group, the SZ/YT group showed significantly greater improvement with regard to measures of attention following corrections for multiple comparisons; the changes were more prominent among the men. In the other diagnostic groups, differing patterns of improvements were noted with small-to-medium effect sizes.Conclusions:Our initial analyses suggest nominally significant improvement in cognitive function in SZ with adjunctive therapies such as YT. The magnitude of the change varies by cognitive domain and may also vary by diagnostic group.

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