scholarly journals The immediate effect of two lumbar stabilization methods on postural control parameters and their reliability during two balance tasks

2021 ◽  
pp. 1-9
Author(s):  
Mohamed Abdelhafid Kadri ◽  
Marianne Violette ◽  
Mathieu Dallaire ◽  
Fábio Carlos Lucas de Oliveira ◽  
Martin Lavallière ◽  
...  
Keyword(s):  
Postural Control ◽  
Control Parameters ◽  
Stabilization Methods ◽  
Lumbar Stabilization

Comparison and Association of Neck Extensor Muscles’ Endurance and Postural Function in Subjects with and without Chronic Neck Pain – A Cross-Sectional Study

2021 ◽  
Author(s):  
Praveen Kumar Kandakurti ◽  
Ravi Shankar Reddy ◽  
Venkata Nagaraj Kakarparthy ◽  
Kanagaraj Rengaramanujam ◽  
Jaya Shanker Tedla ◽  
...  
Keyword(s):  
Neck Pain ◽  
Postural Control ◽  
Chronic Neck Pain ◽  
Cross Sectional Study ◽  
Control Measures ◽  
Endurance Capacity ◽  
Control Parameters ◽  
Sectional Study ◽  
Cross Sectional ◽  
Velocity Moment

Abstract Purpose Neck extensor endurance (NEE) and position sense are vital for maintaining cervical spine function and defects in these processes may be associated with impaired postural control in chronic neck pain (CNP) subjects. The study’s objectives are 1) to compare the cervical extensor endurance capability and postural control of CNP subjects with those of asymptomatic controls; 2) to investigate the association between NEE and postural control. Materials and Methods Sixty-four participants (38 asymptomatic, 38 with CNP) participated in this cross-sectional study. NEE was assessed using a clinical extensor endurance test. Under open and closed eyes conditions, postural control measures were tested with the Good Balance system. The postural control parameters were AP-velocity (mm/s), ML-velocity (mm/s) and Velocity moment (mm2). NEE capacity and postural control parameters were compared and correlated between asymptomatic and CNP subjects. Results and Discussion CNP subjects showed lower NEE capacity (p<0.001) and significantly larger AP-velocity (p<0.001), ML-velocity (p<0.001) and Velocity moment (p<0.001) than asymptomatic participants. NEE negatively correlated with AP-velocity (r=−0.51, p=0.001), ML-velocity (r=0.46, p=0.003) and velocity moment (r=0.38, p=0.020) in asymptomatic subjects in eyes open condition and no correlations in subjects with CNP. CNP subjects showed increased postural sway velocities and lowered extensor endurance capacity compared to asymptomatic participants. No correlations existed between NEE and postural control parameters in CNP subjects.

scholarly journals Association between constitution, medical history, axiography and postural control in women aged between 21 to 30 years

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
C. Doerry ◽  
V. Fisch ◽  
S. Schamberger ◽  
S. Kopp ◽  
C. Erbe ◽  
...  
Keyword(s):  
Postural Control ◽  
Medical History ◽  
Statistical Evaluation ◽  
Mouth Opening ◽  
Measured Data ◽  
Body Sway ◽  
Control Parameters ◽  
Significance Level ◽  
Healthy Female ◽  
Pair Comparisons

AbstractThe aim of this study was to determine association between constitutional, medical history and axiographic parameters with postural control parameters. Overall, 106 healthy female subjects aged between 21 and 30 years were measured. Data collection was carried out by completing a questionnaire on constitutional parameters, illnesses, accidents and medical/orthodontic therapies, as well as by axio- and posturographic measurements. Data were analyzed using correlations, pair comparisons and group comparisons. The significance level was set at p ≤ 0.05. The statistical evaluation showed significant correlations between sporting exercise and body sway in the sagittal direction (p ≤ 0.03), the BMI and the load on the forefoot/rear foot (p ≤ 0.01), the mouth opening and the load on the forefoot/rearfoot (p ≤ 0.01) and the presence of a deviation with the load on the left/right foot (p ≤ 0.01). The physical condition as well as the temporo-mandibular system are associated with the postural control in young women. Therefore, a holistic diagnosis and therapy will be supported by the present outcomes.

scholarly journals DNA damage and postural balance in multiple sclerosis patients

2017 ◽  
Vol 30 (suppl 1) ◽  
pp. 85-91 ◽  
Author(s):  
Karla Mendonça Menezes ◽  
Thaís Doeler Algarve ◽  
Fábio Saraiva Flôres ◽  
Ivana Beatrice Mânica Cruz ◽  
Fernando Copetti ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Dna Damage ◽  
Postural Control ◽  
Postural Balance ◽  
Center Of Pressure ◽  
Damage Index ◽  
Chronic Inflammatory Disease ◽  
The Body ◽  
Control Parameters ◽  
Multiple Sclerosis Patients

Abstract Introduction: Multiple Sclerosis (MS) is a chronic inflammatory disease characterized by infiltration of inflammatory cells on the Central Nervous System (CNS). There is evidence that cumulative DNA damage can contribute to various mechanisms underlying MS lesions. Changes in postural balance are frequent observations in subjects with MS. Objective: Evaluated the DNA damage index (DDI)) and postural balance in patients with MS. Methods: A case-control study was conducted with 28 subjects matched for sex, age, and body mass index, divided into MS group and control. The DDI was assessed by comet assay and postural balance through recording the body oscillations of the center of pressure (COP), in the anterior-posterior and lateral middle directions. Results: Showed higher DDI in MS patients (21.3 ± 4.8) than controls (7.9 ± 6.1). Significant differences between groups were also noted in postural control parameters. The wider ranges of postural sway were observed in the MS group. The associations between DDI and postural control parameters showed weak, but significant correlations. No associations were found between DDI and time of diagnosis of MS. Conclusion: People with MS had higher DDI and larger body oscillations than healthy individuals.

Effects of lumbar stabilization and muscular stretching on pain, disabilities, postural control and muscle activation in pregnant woman with low back pain

2020 ◽  
Vol 56 (3) ◽  
Author(s):  
Adriana P. Fontana Carvalho ◽  
Sébastien S. Dufresne ◽  
Márcio Rogerio de Oliveira ◽  
Karina Couto Furlanetto ◽  
Maryane Dubois ◽  
...  
Keyword(s):  
Low Back Pain ◽  
Back Pain ◽  
Pregnant Woman ◽  
Postural Control ◽  
Muscle Activation ◽  
Low Back ◽  
Lumbar Stabilization

The Effect of Varus Deformity on Co-Activation of Abdominal and Lower Limb Muscles during Landing Task in Female Subjects

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Azizi M ◽  
◽  
Azizi M ◽  
Khademi K ◽  
◽  
...  
Keyword(s):  
Motor Control ◽  
Postural Control ◽  
Control Strategy ◽  
Reaction Force ◽  
Control Parameters ◽  
Vertical Ground Reaction Force ◽  
Co Activation ◽  
Significant Difference ◽  
Vertical Ground ◽  
Gastrocnemius Muscles

Objective: Genuvarum deformity experience knee instability. This deformity can lead the patient to sever osteoarthritis. The recovery of postural stability is very important to prevention of these patients. Strategies aimed at stabilizing the muscle can have a long-term effect on the joint. This study was performed to determine the relationship between muscle stabilization strategies and knee instability, in order to determine how people with knee Genuvarum, respond to rapid absorption and muscle co- contraction during landing task. Methods: Twenty female participants, (10 normal and 10 Genuvarum) in the present study. The subjects were land by preferred lower limb from a table (30 cm high) on a force plate. Vertical ground reaction force, time to peak of vertical reaction force, velocity of vertical ground reaction force to reach the maximum, time to stability in X and Y directions and resultant vector were calculated as postural control parameters. Also surface electromyography of transverse abdominal/int. oblique, vastus medialis, vastus lateralis, lateral gastrocnemius, and medial gastrocnemius muscles were recorded during landing. Motor control strategy were measured by similarity index and voluntary response index. Results: There are significant difference between Genuvarum and Healthy subjects in motor control strategy (P<0.05).A significant difference are detected in postural control parameters between two groups (P<0.05). Conclusion: Genuvarum deformity may be linked to altered quadriceps, abdominal and gastrocnemius muscles reciprocal co-activation patterns during landing task. In addition, may be affected voluntary motor control strategy in synergy concepts. Postural control is affected in these deformity and shock absorption may be reduced in parallel to increase of response vector and reduce of instability in landing task.

scholarly journals Effects of Plantar Flexor Muscles Fatigue on Postural Control during Quiet Stance and External Perturbation in Healthy Subjects

2019 ◽  
Author(s):  
Z Rojhani-Shirazi ◽  
Z Amiri ◽  
S Ebrahimi
Keyword(s):  
Postural Control ◽  
Muscle Fatigue ◽  
Center Of Pressure ◽  
External Perturbation ◽  
Plantar Flexor ◽  
Control Parameters ◽  
Quiet Stance ◽  
Flexor Muscles ◽  
Plantar Flexor Muscles ◽  
Anterior Posterior

Background: The maintenance of postural control is a key component in dynamic physical activity, especially during muscle fatigue and against external forces. Despite many studies in this field, there is no consensus regarding the effects of plantar flexor muscles fatigue on postural control during different postural tasks.Objective: To evaluate the effects of plantar flexor muscles fatigue on postural control during quiet stance and external perturbation in healthy subjects.Methods: Twenty four healthy individuals (20-35 years) participated this interventional study. The foot center of pressure data was measured using a single force platform, and then the postural control parameters, including the center of pressure displacement and velocity in the anterior-posterior and medial-lateral direction and also path length calculated under two conditions; quiet and perturbed stance, before and after plantar flexor muscles fatigue.Results: The statistical analysis demonstrated that mean displacement and velocity of the center of pressure in the anterior-posterior direction and also path length increased after the fatigue protocol in the perturbed condition. However, fatigue had no significant effects on postural control parameters in the quiet standing condition.Conclusion: These results indicated that the effects of muscle fatigue on postural control depend on the difficulty of the task and the relevance of proprioceptive information. The postural control system appears to use distinct control strategies in different situations such as quiet and perturbed stance conditions, and these strategies may be differentially altered by fatigue. In conclusion, due to the potential risk of loss of balance, it is important to take the role of plantar flexor muscle fatigue into account during more difficult postural tasks.

scholarly journals Impact of Body Mass Index on Static Postural Control in Adults With and Without Diabetes: A Cross-Sectional Study

2021 ◽  
Vol 12 ◽  
Author(s):  
Lianhua Yin ◽  
Jiawei Qin ◽  
Yannan Chen ◽  
Jinjin Xie ◽  
Cuiping Hong ◽  
...  
Keyword(s):  
Postural Control ◽  
Cross Sectional Study ◽  
Normal Weight ◽  
Healthy Controls ◽  
Control Parameters ◽  
Control Groups ◽  
Cross Sectional ◽  
Eyes Closed ◽  
Eyes Open ◽  
Healthy Control

AimThe objective of this research was to determine the static postural control differences measured from a force platform in Type 2 diabetes mellitus (T2DM) and healthy control groups with different levels of body mass index (BMI), and detect the static postural control difference between T2DM and healthy control groups stratified by different BMI category. This research also explored the relationship of BMI and static postural performance.MethodsWe recruited 706 participants with T2DM and 692 healthy controls who were sufficiently matched for age, gender, and BMI in this cross-sectional study. The participants were stratified into three groups by BMI: normal weight, overweight, and obesity. All participants performed two-legged static stance postural control assessment on a firm force platform. The Center of Pressure (CoP) parameters were collected under eyes-open and eyes-closed conditions. Mann–Whitney U test was used to compare the static postural control parameters within each BMI category in both groups. The static postural control parameters among different weight groups were compared by Kruskal–Wallis test, post hoc pair-wise comparison were conducted. Generalized linear model was conducted to examine the association between BMI and static postural control parameters while controlling for confounding factors.ResultsHealthy control group had statistical difference in most CoP parameters compared to T2DM group based on all BMI categories. Normal weight participants presented significant difference compared with overweight and/or obesity for total track length (TTL) and velocity of CoP displacements in Y direction (V-Y) under eyes-open condition, and for most CoP parameters under eyes-closed condition in both groups. There were statistically significant correlations between BMI and most static postural control parameters under only eyes-closed condition according to the result of generalized linear model.ConclusionT2DM patients had impaired static postural control performance compared to healthy controls at all BMI categories. The findings also indicated the association between BMI and static postural control, where higher BMI individuals showed more static postural instability in both T2DM and healthy controls.

Feature reduction with PCA/KPCA for gait classification with different assistive devices

2015 ◽  
Vol 8 (4) ◽  
pp. 363-382 ◽  
Author(s):  
Maria Martins ◽  
Cristina Santos ◽  
Lino Costa ◽  
Anselmo Frizera
Keyword(s):  
Postural Control ◽  
Principal Component ◽  
Feature Reduction ◽  
Assistive Devices ◽  
Support Vector ◽  
Control Parameters ◽  
Gait Patterns ◽  
Content Type ◽  
Reduction Techniques ◽  
Gait Features

Purpose – The purpose of this paper is to propose a gait analysis technique that aims to identify differences and similarities in gait performance between three different assistive devices (ADs). Design/methodology/approach – Two feature reduction techniques, linear principal component analysis (PCA) and nonlinear kernel-PCA (KPCA), are expanded to provide a comparison of the spatio-temporal, symmetrical indexes and postural control parameters among the three different ADs. Then, a multiclass support vector machine (MSVM) with different approaches is designed to evaluate the potential of PCA and KPCA to extract relevant gait features that can differentiate between ADs. Findings – Results demonstrated that symmetrical indexes and postural control parameters are better suited to provide useful information about the different gait patterns that total knee arthroplasty (TKA) patients present when walking with different ADs. The combination of KPCA and MSVM with discriminant functions (MSVM DF) resulted in a noticeably improved performance. Such combination demonstrated that, with symmetric indexes and postural control parameters, it is possible to extract with high-accuracy nonlinear gait features for automatic classification of gait patterns with ADs. Originality/value – The information obtained with the proposed technique could be used to identify benefits and limitations of ADs on the rehabilitation process and to evaluate the benefit of their use in TKA patients.

Sign in / Sign up

Export Citation Format

Share Document