scholarly journals Balance Markers in Adolescents at 1 Month Postconcussion

2017 ◽  
Vol 5 (3) ◽  
pp. 232596711769550 ◽  
Author(s):  
Coralie Rochefort ◽  
Coren Walters-Stewart ◽  
Mary Aglipay ◽  
Nick Barrowman ◽  
Roger Zemek ◽  
...  
Keyword(s):  
Center Of Pressure ◽  
Age Distribution ◽  
Control Group ◽  
Level Of Evidence ◽  
Cross Sectional ◽  
Significant Group ◽  
Dual Task Condition ◽  
Eyes Closed ◽  
Eyes Open ◽  
Balance Deficits

Background: The Balance Error Scoring System (BESS) shows that balance tends to recover within days after a concussion, whereas measures of the movement of the center of pressure (COP) show that balance deficits can persist up to 1 month after concussion. While approximately 30% of adolescents suffering concussion have functional consequences including balance deficits, evidence of the use of different balance assessments for concussion is limited within this population. Purpose: To compare performance on a series of balance assessments between adolescents with a diagnosed concussion at 1 month postinjury and noninjured control participants within the same age distribution. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Thirty-three adolescents 1 month postconcussion and 33 control participants completed the BESS followed by two, 2-minute trials standing on a Nintendo Wii Balance Board (WBB), during which the COP under their feet was recorded using 2 testing protocols: (1) double-leg stance, eyes open (EO) and (2) double-leg stance, eyes closed (EC). Participants then completed a dual-task condition (DT) with eyes open combining a double-leg stance and a Stroop color and word test while standing on the WBB. Three commonly used COP variables, anterior-posterior (A/P) and mediolateral (M/L) velocity and 95% ellipse, were computed for each condition performed on the WBB. Results: Participants postconcussion swayed over a significantly larger ellipse area compared with the control group in the EO ( P = .008), EC ( P = .002), and DT ( P = .003) conditions and also performed the DT condition with faster COP velocity in the M/L direction ( P = .007). No significant group difference was identified for BESS total score. Conclusion: At 1 month postconcussion, participants continued to demonstrate balance deficits in COP control despite scoring similar to controls on the BESS. Simple COP measures of balance may identify subtle impairments not captured by the BESS.

scholarly journals Maximal stability limits in adolescents with Tourette syndrome

2021 ◽  
Vol 4 (1) ◽  
pp. 013-022
Author(s):  
Blanchet Mariève ◽  
Prince François ◽  
Lemay Martin ◽  
Chouinard Sylvain ◽  
Messier Julie
Keyword(s):  
Postural Control ◽  
Tourette Syndrome ◽  
Center Of Pressure ◽  
Phase 1 ◽  
Sensory Information ◽  
Control Group ◽  
Eyes Closed ◽  
Highly Sensitive ◽  
Eyes Open ◽  
Stability Limits

We explored if adolescents with Gilles de la Tourette syndrome (GTS) had functional postural control impairments and how these deficits are linked to a disturbance in the processing and integration of sensory information. We evaluated the displacements of the center of pressure (COP) during maximal leaning in four directions (forward, backward, rightward, leftward) and under three sensory conditions (eyes open, eyes closed, eyes closed standing on foam). GTS adolescents showed deficits in postural stability and in lateral postural adjustments but they had similar maximal COP excursion than the control group. The postural performance of the GTS group was poorer in the eyes open condition (time to phase 1 onset, max-mean COP). Moreover, they displayed a poorer ability to maintain the maximum leaning position under the eyes open condition during mediolateral leaning tasks. By contrast, during forward leaning, they showed larger min-max ranges than control subjects while standing on the foam with the eyes closed. Together, these findings support the idea that GTS produces subclinical postural control deficits. Importantly, our results suggest that postural control disorders in GTS are highly sensitive to voluntary postural leaning tasks which have high demand for multimodal sensory integration.

scholarly journals Three-Month Test-Retest Reliability of Center of Pressure Motion During Standing Balance in Individuals with Multiple Sclerosis

2016 ◽  
Vol 18 (2) ◽  
pp. 59-62 ◽  
Author(s):  
Douglas A. Wajda ◽  
Robert W. Motl ◽  
Jacob J. Sosnoff
Keyword(s):  
Multiple Sclerosis ◽  
Center Of Pressure ◽  
Temporal Structure ◽  
Standing Balance ◽  
Retest Reliability ◽  
Eyes Closed ◽  
Prevention Studies ◽  
Eyes Open ◽  
Balance Deficits ◽  
Test Retest Reliability

Background: Balance impairment and an increased rate of falls are commonly reported in individuals with multiple sclerosis (MS). Force platform–generated center of pressure (COP) metrics have previously been recommended as an outcome measure to quantify balance deficits and distinguish between fallers and nonfallers in MS. Information is limited regarding the preservation of postural control in individuals with MS over extended time frames in the absence of an intervention. This report examines the test-retest reliability and magnitude of change of COP motion during standing balance over 3 months. Methods: Twenty individuals with MS and a history of falling underwent testing on two occasions 3 months apart in the absence of an intervention. On both occasions, participants completed two 30-second trials of three conditions: eyes open, eyes closed, and eyes open with concurrent cognitive challenge (dual task). Measures of COP area, velocity, and temporal structure were calculated and included in the reliability analysis. Results: The COP metrics displayed fair-to-excellent reliability over 3 months without an intervention. Reliability was maintained across the three commonly used balance conditions. Conclusions: These results offer insight into the reliability of COP measures over a 3-month period in MS and can inform the use of COP metrics for future study design (eg, sample size estimates) and balance outcome assessment during randomized controlled trials and fall-prevention studies in individuals with MS.

scholarly journals Postural Control of Healthy Elderly Individuals Compared to Elderly Individuals with Stroke Sequelae

2016 ◽  
Vol 10 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Fábio Marcon Alfieri ◽  
Marcelo Riberto ◽  
José Augusto Fernandes Lopes ◽  
Thais Raquel Filippo ◽  
Marta Imamura ◽  
...  
Keyword(s):  
Postural Control ◽  
Center Of Pressure ◽  
Force Platform ◽  
Control Group ◽  
Timed Up And Go ◽  
Cross Sectional ◽  
Elderly Individuals ◽  
Eyes Closed ◽  
Healthy Elderly ◽  
Elderly Control

A stroke and aging process can modify the postural control. We aimed to compare the postural control of health elderly individuals to that of individuals with stroke sequelae. This cross-sectional transversal study was made with individuals capable of walking without any assistance and that were considered clinically stable. The study had 18 individuals in the group with stroke sequelae (SG) and 34 in the healthy elderly control group (CG). The participants were evaluated for the timed up and go test (TUG) and force platform. The SG showed the worst results in relation to the time of execution of the TUG and the force platform evaluation. The displacement of center of pressure was worse for both groups in the eyes-closed situation, especially in the anteroposterior direction for the CG. The GS showed worse results in the static and dynamic postural control. The healthy elderly showed more dependence on sight to maintain their static balance and there was no difference in the balance tests in relation to the side affected by the stroke.

scholarly journals Measures of Agility and Single-Legged Balance as Clinical Assessments in Patients With Anterior Cruciate Ligament Reconstruction and Healthy Individuals

2019 ◽  
Vol 54 (12) ◽  
pp. 1260-1268
Author(s):  
Aleah N. Kirsch ◽  
Stephan G. Bodkin ◽  
Susan A. Saliba ◽  
Joseph M. Hart
Keyword(s):  
Ligament Reconstruction ◽  
Center Of Pressure ◽  
Cruciate Ligament ◽  
T Test ◽  
Control Group ◽  
Clinical Assessments ◽  
Eyes Closed ◽  
Knee Position ◽  
Eyes Open ◽  
Anterior Cruciate

Context Current clinical assessments used for patients with anterior cruciate ligament reconstruction (ACLR) may not enable clinicians to properly identify functional deficits that have been found in laboratory studies. Establishing muscular-function assessments, through agility and balance tasks, that can properly differentiate individuals with ACLR from healthy, active individuals may permit clinicians to detect deficits that increase the risk for poor outcomes. Objective To compare lower extremity agility and balance between patients with ACLR and participants serving as healthy controls. Design Case-control study. Setting Controlled laboratory. Patients or Other Participants A total of 47 volunteers in 2 groups, ACLR (9 males, 11 females; age = 23.28 ± 5.61 years, height = 173.52 ± 8.89 cm, mass = 70.67 ± 8.89 kg) and control (13 males, 12 females; age = 23.00 ± 6.44, height = 172.50 ± 9.24, mass = 69.81 ± 10.87 kg). Main Outcome Measure(s) Participants performed 3 timed agility tasks: Agility T Test, 17-hop test, and mat-hopping test. Balance was assessed in single-legged (SL) stance in 3 positions (straight knee, bent knee, squat) on 2 surfaces (firm, foam) with the participants' eyes open or closed for 10-second trials. Agility tasks were measured for time to completion. Eyes-open balance tasks were measured using center-of-pressure average velocity, and eyes-closed balance tasks were measured using the Balance Error Scoring System. Results For the Agility T Test, the ACLR group had slower times than the control group (P = .05). Times on the Agility T Test demonstrated moderate to strong positive relationships for unipedal measures of agility. The ACLR group had greater center-of-pressure average velocity in the SL bent-knee position than the control group. No differences were found between groups for the SL straight-knee and SL-squat balance tasks (P > .05). No differences in errors were present between groups for the eyes-closed balance tasks (P > .05). Conclusions The ACLR group demonstrated slower bipedal agility times and decreased postural stability when assessed in an SL bent-knee position compared with the control group.

Effects of Balance Training on Postural Stability

2002 ◽  
Vol 46 (13) ◽  
pp. 1237-1240
Author(s):  
Jennifer M. Schmit ◽  
Deanna I. Rejacques ◽  
Michael A. Riley
Keyword(s):  
Postural Control ◽  
Postural Sway ◽  
Balance Training ◽  
Control Group ◽  
Significant Group ◽  
Eyes Closed ◽  
Eyes Open ◽  
Group 2 ◽  
Main Effects ◽  
The Relationship

The present study is designed to address the relationship between postural sway and balance training. We compared postural sway in a group of trained dancers to a group of physically fit, untrained participants (control group) in order to assess enhanced postural control with balance training, particularly under challenging balance conditions. We varied the difficulty of postural control by using two surface conditions (rigid surface, foam surface) and two visual conditions (eyes open, eyes closed), factorially combined. The data were evaluated using 1-between (group) × 2-within (vision and surface) analyses of variance (ANOVA). The three dependent variables were the standard deviation of the COP time series in the anterior-posterior (AP) and medial-lateral (ML) axes, and the COP path length. Significant main effects were found for surface and vision and the surface*vision interaction in all conditions. Significant group differences were found in the AP and ML axes. The results of this study indicate that balance training enhances the control of posture. Thus, it may be useful to provide balance training to workers who must operate under conditions that threaten balance.

Physical performance measures following ten weeks of taekwondo training in children: A pilot study

2018 ◽  
Vol 7 (3) ◽  
pp. 1-11
Author(s):  
Neeti Pathare ◽  
Rachel Kimball ◽  
Elizabeth Donk ◽  
Kyle Kennedy ◽  
Mellissa Perry
Keyword(s):  
Performance Measures ◽  
Significant Interaction ◽  
Average Velocity ◽  
Center Of Pressure ◽  
Healthy Weight ◽  
Significant Group Effect ◽  
Significant Group ◽  
Time Effects ◽  
Eyes Closed ◽  
Eyes Open

The primary purpose was to examine changes in balance, lower extremity (LE) power and flexibility following 10 weeks of taekwondo (TKD) training and to determine if this was different in children classified as healthy weight (HW) and overweight (OW)/obese. Participants included 17 children (HW: n = 11, OW/obese: n = 6). Data were collected on balance, LE power and flexibility at baseline and 10 weeks. Balance was assessed with eyes open in normal (NSEO), tandem (TSEO), single (SLEO) stances and with eyes closed for normal (NSEC) and tandem (TSEC) stances. Center of pressure displacements in mediolateral (Xavg) and anteroposterior (Yavg) directions; and average velocity (Vavg) were calculated. Analyses included two-way ANOVA and Mann Whitney U tests (P < 0.05). Balance data indicated significant interaction effects for Xavg in NSEO, Yavg in TSEO; time effects for Yavg in NSEO, NSEC and SLEO and Vavg in SLEO conditions. A significant group effect was shown for Vavg in the NSEO, NSEC and TSEO and for Yavg in TSEC conditions. Flexibility decreased significantly with TKD. Findings suggest that 10 weeks of TKD training may improve balance in children, and OW/obese group may have greater improvements in balance with eyes open compared to their peers.

scholarly journals The Influence of Proprioceptive Training with the Use of Virtual Reality on Postural Stability of Workers Working at Height

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3731
Author(s):  
Magdalena Cyma-Wejchenig ◽  
Jacek Tarnas ◽  
Katarzyna Marciniak ◽  
Rafał Stemplewski
Keyword(s):  
Virtual Reality ◽  
Dual Task ◽  
Postural Stability ◽  
Center Of Pressure ◽  
Force Plate ◽  
Control Group ◽  
Eyes Closed ◽  
Proprioceptive Training ◽  
Eyes Open ◽  
The Impact

The aim of the study was to assess the impact of proprioceptive training with the use of virtual reality (VR) on the level of postural stability of high–altitude workers. Twenty-one men working at height were randomly assigned to the experimental group (EG) with training (n = 10) and control group (CG) without training (n = 11). Path length of the displacement of the center of pressure (COP) signal and its components in the anteroposterior and medial–lateral directions were measured with use of an AccuGaitTM force plate before and after intervention (6 weeks, 2 sessions × 30 min a week). Tests were performed at two different platform heights, with or without eyes open and with or without a dual task. Two–way ANOVA revealed statistically significant interaction effects for low–high threat, eyes open-eyes closed, and single task-dual task. Post-training values of average COP length were significantly lower in the EG than before training for all analyzed parameters. Based on these results, it can be concluded that the use of proprioceptive training with use of VR can support, or even replace, traditional methods of balance training.

scholarly journals EEG Data Quality: Determinants and Impact in a Multicenter Study of Children, Adolescents, and Adults with Attention-Deficit/Hyperactivity Disorder (ADHD)

2021 ◽  
Vol 11 (2) ◽  
pp. 214
Author(s):  
Anna Kaiser ◽  
Pascal-M. Aggensteiner ◽  
Martin Holtmann ◽  
Andreas Fallgatter ◽  
Marcel Romanos ◽  
...  
Keyword(s):  
Data Quality ◽  
Large Scale ◽  
Linear Models ◽  
Spectral Power ◽  
Control Group ◽  
Continuous Performance Task ◽  
Related Data ◽  
Eyes Closed ◽  
Eeg Data ◽  
Eyes Open

Electroencephalography (EEG) represents a widely established method for assessing altered and typically developing brain function. However, systematic studies on EEG data quality, its correlates, and consequences are scarce. To address this research gap, the current study focused on the percentage of artifact-free segments after standard EEG pre-processing as a data quality index. We analyzed participant-related and methodological influences, and validity by replicating landmark EEG effects. Further, effects of data quality on spectral power analyses beyond participant-related characteristics were explored. EEG data from a multicenter ADHD-cohort (age range 6 to 45 years), and a non-ADHD school-age control group were analyzed (ntotal = 305). Resting-state data during eyes open, and eyes closed conditions, and task-related data during a cued Continuous Performance Task (CPT) were collected. After pre-processing, general linear models, and stepwise regression models were fitted to the data. We found that EEG data quality was strongly related to demographic characteristics, but not to methodological factors. We were able to replicate maturational, task, and ADHD effects reported in the EEG literature, establishing a link with EEG-landmark effects. Furthermore, we showed that poor data quality significantly increases spectral power beyond effects of maturation and symptom severity. Taken together, the current results indicate that with a careful design and systematic quality control, informative large-scale multicenter trials characterizing neurophysiological mechanisms in neurodevelopmental disorders across the lifespan are feasible. Nevertheless, results are restricted to the limitations reported. Future work will clarify predictive value.

scholarly journals The influence of an aquatic exercise program on balance in patients with ankylosing spondylitis

2021 ◽  
Vol 31 (Supplement_2) ◽  
Author(s):  
Margarida Ferreira ◽  
Cristina Mesquita ◽  
Paula Santos ◽  
João Borges ◽  
Maria Graça ◽  
...  
Keyword(s):  
Ankylosing Spondylitis ◽  
Center Of Pressure ◽  
Exercise Program ◽  
Wilcoxon Test ◽  
Aquatic Exercise ◽  
Body Sway ◽  
Mean Velocity ◽  
Assessment Protocol ◽  
Eyes Closed ◽  
Eyes Open

Abstract Background Ankylosing spondylitis (AS) is a chronic inflammatory rheumatic disease that leads to a limitation of mobility, which can cause postural deficits and progressive loss of balance. Aquatic exercise improves this health condition. The objetive is to verify the influence of an aquatic exercise program, on balance and functionality, in individuals with AS. Methods Pre-experimental study carried out on 6 individuals with AS. All individuals were assessed at baseline (M0) and 12 weeks after the intervention (M1) using the Bath indices (BASMI, BASFI and BASDAI) and the balance assessment protocol (‘Body Sway’) by the Physiosensing Platform. Data were analyzed using the Statistical Program Statistical Package for the Social Sciences (SPSS), version 26. Were used descriptive statistics and Wilcoxon test to compare M0 and M1. The significance value was 0.05. Results We verify improvements in BASMI (P = 0.046), BASFI (P = 0.042) and BASDAI (P = 0.027) scores. Through the analysis of the center of pressure variables, there were no statistically significant differences, between moments, in the protocol. However, when assessing balance, in the anteroposterior mean distance in both the protocol (eyes open) and in the protocol (eyes closed), in the root mean square in both protocols and in mediolateral mean velocity, only in the protocol (eyes open), there was a slight decrease in the median value. Conclusions The present study suggests that the specific aquatic exercise program, may influence balance and improve functionality in a population with AS. Therefore, the Bath indices translate improvements in the symptoms and functionalities of these participants.

Does Dual Motor Tasks Provokes Posture Adaptations in Healthy Young Adults? A Cross-sectional Study

2021 ◽  
Author(s):  
Carley Bowman ◽  
Aleena Jose ◽  
Martin G Rosario
Keyword(s):  
Young Adults ◽  
Postural Stability ◽  
Cross Sectional Study ◽  
P Value ◽  
Motor Tasks ◽  
Anova Analysis ◽  
Dual Tasks ◽  
Cross Sectional ◽  
Eyes Closed ◽  
Eyes Open

Introduction: Most studies on postural deviations during single and dual tasks have been extensively studied in neuromuscular and older adult populations. Nevertheless, further research is warranted to identify whether such tasks can impose postural adaptations in young, healthy adults without sensory impairments. Aim: To assess postural stability modifications in young adults during single tasks and dual motor tasks (holding a cup filled with water) while concomitantly challenging the sensory systems. Materials and Methods: This was the cross-sectional study on 82 young adults (18-45 years old) from Texas Woman’s University (TWU) Health Science Center in Dallas, Texas, and surrounding areas. Standing postural control was measured by collecting total sway, direction of sway and velocity in the Anterior-Posterior (AP) and Medial-Lateral (ML) directions during different balance tasks. For single and dual tasks, the tests were performed with a bipedal stance on foam involving challenging the sensory input via Eyes Open (EO), Eyes Closed (EC), and head movements with eyes open (EO HUD) and closed (EC HUD). The dual motor tasks were similar to the single tasks with the addition of holding a cup full of water to split attention. Data were placed into the Statistical Package for Social Sciences (SPSS) Data Analysis 25.0 system and were analysed for repeated measures Analysis of Variance (ANOVA) analysis. Results: Eighty-two healthy young adults participated in this study (mean age of 24.6±2.7 years, 13 males and 69 females). An ANOVA analysis revealed that postural stability was considerably altered during motor tasks. Sway in the Antero-Posterior (AP) direction, and velocity of sway increased as the complexity of the tasks intensified. A substantial difference in total sway during single tasks when eyes were closed compared to eyes open (p-value <0.01) was noted. There was a significant difference in total sway (AP and ML) during eyes open (EOM) to eyes closed (ECM) and during eyes open with head moving up and down (EOM HUD) (p-value 0.001). There were significant differences in mean AP velocity during EO (0.11±0.12) compared to EC HUD (0.19±0.15), and when comparing EOM (0.07±0.04) to ECM HUD (0.13±0.08) (p=0.01) Conclusion: This study identified postural changes when comparing single and dual tasks in healthy young adults, and the outcomes of this study showed definite distinctions in postural responses during single and dual motor tasks.

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