Perturbation postural balance. Medical search. Frequent questions

Voluntary body movement can import a perturbation to the postural stability/balance of a human body. (cdc.gov)
The objective of this laboratory-based study was to quantify workers' postural stability while lifting drywall sheets through kinetic and kinematic analyses, and to identify the drywall lifting methods that caused the least perturbation on workers' balance. (cdc.gov)
Both center-of-pressure (COP) and center-of-mass (COM) data were analyzed to assess workers' postural stability. (cdc.gov)
The dynamic challenges of unstable sitting balance require a combined feedforward-feedback strategy in the trunk musculature to maintain spinal stability and postural equilibrium. (fairfieldcountybusinessjournal.com)
The ability to maintain postural stability is the foundation of achieving independent standing and walking [ 1 ]. (biomedcentral.com)
In people with lower limb amputations, they must compensate for the challenging task in maintaining postural stability by increasing dependence on visual and vestibular information [ 3 ]. (biomedcentral.com)
Due to the important role of visual information, postural stability assessment with eyes-closed condition is necessary to determining the utilization of other sources of sensory information during postural control in addition to the eyes-open condition which serves as baseline clinical assessment [ 6 ]. (biomedcentral.com)
In able-bodied person, the motor coordination responsible for postural stability maintenance consists of ankle and hip strategies which produce corrective torque in order to counter the destabilizing torque due to gravity that causes deviation of the CoM [ 8 ]. (biomedcentral.com)
However, in order to maintain postural stability during perturbation, concentric muscle contraction is essential. (biomedcentral.com)
A definition of balance is the ability to maintain or return the body's center of gravity within the limits of stability that are determined by the base of support (i.e., the area of the feet) .while spatial orientation defines our natural ability to maintain our body orientation in relation to the surrounding environment, in static and dynamic conditions. (iomcworld.org)
Maintaining balance encompasses the acts of preserving, achieving or restoring the body center of mass relative to the limits of stability that are given by the base of support ,which implies the control of posture in preventing falling. (iomcworld.org)
Then, in order to modify motor responses on the basis of sensory input, the appropriate responses to any external or internal perturbation have to be chosen/Nevertheless, to maintain stability, all movements that affect the static and dynamic position of the center of mass of the body must be preceded or accompanied by adjustments of other segments. (iomcworld.org)
Age-related changes can impair systems involved in maintaining balance and stability (eg, while standing, walking, or sitting) and increase the risk of falls. (msdmanuals.com)
Both groups revealed a lower relative stability for direction control as the support surface perturbation inclined. (um.edu.my)
The findings could contribute to the understanding of the possibility of anthropometric variable impact on postural stability and development new rehabilitation program for transtibial amputee. (um.edu.my)
Additionally, the aim was to evaluate if vibratory feedback could be used to improve postural stability in transtibial prosthesis users and how being a prosthesis user influenced muscular response to postural perturbations. (gu.se)
Study III evaluated the influence of a vibratory feedback device on postural stability in 24 transtibial prosthesis users. (gu.se)
Vibratory feedback can be used to improve some aspects of postural stability, and automatic postural responses are slower in transtibial prosthesis users than in able-bodied controls. (gu.se)
These findings contribute to the understanding of how researchers model motion of transtibial prosthesis users and how this group maintains postural stability with a prosthesis. (gu.se)
Rusaw D., Hagberg K., Nolan L., Ramstrand N. Can vibratory feedback be used to improve postural stability in persons with transtibial limb loss? (gu.se)
As main outcome measure, postural control was quantified after a vertical drop by means of the dynamic postural stability index (DPSI). (thieme-connect.de)
At baseline, subjects with CAI displayed higher anterior/posterior and vertical postural instability, a poorer DPSI, and lower subjective stability scores compared to the control group. (thieme-connect.de)
After balance training, all subjective stability scores improved significantly, although no changes were noted for the stability indices. (thieme-connect.de)
3 Brown CN, Bowser B, Orellana A. Dynamic postural stability in females with chronic ankle instability. (thieme-connect.de)
6 Fitzgerald D, Trakarnratanakul N, Smyth B, Caulfield B. Effects of a wobble board-based therapeutic exergaming system for balance training on dynamic postural stability and intrinsic motivation levels. (thieme-connect.de)
VSR helps to maintain & regain postural stability during movement. (juniperpublishers.com)
Despite fall-related injuries having serious consequences for older haemophilic patients, few studies have investigated their postural stability and risk of falls. (canterbury.ac.uk)
The aim was to examine postural stability, joint function and joint mobility in haemophiliacs and age-matched controls. (canterbury.ac.uk)
Joint function, mobility, and postural stability are reduced in PWH compared to PWOH, driven by differences in the CoP AP range. (canterbury.ac.uk)
Dynamic tests incorporating physical perturbation may be more effective than static balance tests on a level surface, and longer period of time to assess postural stability may determine whether fatigue affects ability of PWH to maintain postural stability. (canterbury.ac.uk)
Adoption of a possible 'hip strategy' by which to achieve balance suggests falls prevention programs need to focus on increasing hip strength and retraining ankle strategy movement to allow PWH to improve balance stability. (canterbury.ac.uk)
Indices of multi-muscle synergies are new measurements of postural stability. (nih.gov)
Studies of synergies may provide a biomarker sensitive to problems with postural stability and agility and to efficacy of dopamine-replacement therapy. (nih.gov)
Postural control is defined as achievement, maintenance or regulation of balance during any static posture or dynamic activity for the regulation of stability and orientation. (iomcworld.org)
These stability and orientation challenges necessitate change in the task and environment, thereby making postural control the most essential pre requisite for most of the tasks. (iomcworld.org)
There are two types of postural control strategies: predictive and reactive, which utilize the feed forward and feedback postural control respectively in order to maintain stability during various circumstances. (iomcworld.org)
14. Effects of treadmill slip and trip perturbation-based balance training on falls in community-dwelling older adults (STABILITY): study protocol for a randomised controlled trial. (nih.gov)
The highest vs. lowest quartile of ambient styrene was associated with significantly poorer postural stability, and (unexpectedly) with significantly greater grip strength. (nih.gov)

Anticipatory postural adjustments (APAs) are a feedforward mechanism triggered in advance to a predictable perturbation, to help the individual counteract mechanical effects that the disturbance may cause. (biomedcentral.com)
In this systematic review with meta-analysis, we investigated aging effects on postural control, based on anticipatory postural adjustments (APAs). (biomedcentral.com)
Training-Related Enhancement of Anticipatory Postural Adjustments in Older Adults. (uic.edu)
Anticipatory postural adjustments: what we know and what we don t. (uic.edu)
The role of anticipatory postural adjustments in balance control of older adults. (uic.edu)
In contrast, no medication effects were seen on anticipatory postural adjustments or other performance indices. (nih.gov)

Force platform measures for evaluating postural control: reliability and validity. (thieme-connect.de)

Postural balance is impaired among cleaners with neck pain and the current study suggests a particular role of the slow component of postural sway. (medscape.com)
The Postural Sway Test, Berg Balance Test (BBS), and 6-min Walk Test were measured before and after 3 months i.e., 20 training sessions. (bgu.ac.il)
The pilot RCT shows that, older people who participated in the PerStBiRo training significantly improved the BBS (54 to 56, p = 0.026) and Postural Sway velocity (20.3 m/s to 18.3 m/s, p = 0.018), while control group subject did not (51.0 vs. 50.5, p = 0.581 and 15 m/s vs. 13.8 m/s, p = 0.893, respectively), 6MWT tended to improve in both groups. (bgu.ac.il)
The pilot study shows that these improvements in balance proactive and reactive responses are generalized to performance-based measures of balance (BBS and Postural Sway measures). (bgu.ac.il)
In fact, previous study showed that the absence of visual input will increase the postural sway and asymmetry of stance in below-knee amputees [ 7 ]. (biomedcentral.com)
As the static stance control serves as the indicator of dynamic control via assessment of postural sway, it is important to identify changes among different targeted groups. (um.edu.my)
Excessive postural sway when trying to hold still. (girafferollingcane.com)

Patients with PD present motor impairments with the cardinal symptoms bradykinesia, tremor, rigidity, and postural instability ( Jankovic, 2008 ). (frontiersin.org)
The aim of this study was to establish the presence of postural deficits in subjects with chronic ankle instability (CAI) and to assess the effect of an 8-week balance training program on dynamic postural control. (thieme-connect.de)
As a treatment modality, balance training exhibits the capability of improving the subjective feeling of instability in subjects with CAI. (thieme-connect.de)
Ankle instability is associated with balance impairments: a meta-analysis. (thieme-connect.de)
4 Brown CN, Mynark R. Balance deficits in recreational athletes with chronic ankle instability. (thieme-connect.de)
8 Gauffin H, Tropp H, Odenrick P. Effect of ankle disk training on postural control in patients with functional instability of the ankle joint. (thieme-connect.de)
The effect of a 4-week comprehensive rehabilitation program on postural control and lower extremity function in individuals with chronic ankle instability. (thieme-connect.de)
The retropulsion test is widely regarded as the gold standard to evaluate postural instability, Use of the retropulsion test includes a rapid balance perturbation in the backward direction, and the number of balance correcting steps (or total absence thereof) is used to rate the degree of postural instability. (nih.gov)
BACKGROUND: Postural instability is one of most disabling motor symptoms in Parkinson's disease. (nih.gov)
and postural instability, or impaired balance and coordination. (nih.gov)

Fear of heights shapes postural responses to vibration-induced balance perturbation at virtual height. (sav.sk)
Fall-risk assessments for patients with diabetes fail to consider reactive responses to balance loss. (nih.gov)
Background: Balance control, and specifically balance reactive responses that contribute to maintaining balance when balance is lost unexpectedly, is impaired in older people. (bgu.ac.il)
Improving balance reactive responses is one of the goals in fall-prevention training programs. (bgu.ac.il)
Its software is able to identify a trainee's proactive and reactive balance responses using the Microsoft Kinect™ system. (bgu.ac.il)
Conclusions: Our participants were able to perform correct balance proactive and reactive responses, indicating that older people are able to learn balance trunk and arm reactive responses during stationary bicycling. (bgu.ac.il)
In postural perturbation studies using a moving platforms stepping responses without an APA were found to have shorter latency to foot lifting than trials with an APA. (nau.edu)
We studied stepping responses of healthy young adults under postural perturbation of a pulling force impulse on the subject's waist. (nau.edu)
People with a history of low back pain (LBP) exhibit altered responses to postural perturbations, and the central neural control underlying these changes in postural responses remains unclear. (smith.edu)
These observations have been previously interpreted as indicating an increased reliance on cortical rather than spinal control of balance, despite the fact that cortical responses have a longer latency. (biorxiv.org)

Individual height intolerance affects postural control during the virtual height exposure. (sav.sk)
The Center will conduct a number of research projects in humans and/or animals integrated into a program and centered around the vestibular control of balance and posture and the regulation of locomotion and other volitional movements. (nih.gov)
PerStBiRo) that can challenge balance while sitting on a stationary bicycle, with the aim of improving balance proactive and reactive control. (bgu.ac.il)
A compensatory stepping response is a commonly used strategy in recovering balance control after a postural perturbation. (nau.edu)
Training on an unstable seat apparatus, which eliminates the influence of lower body movements on balance control, may have potential benefits for enhancing core muscle neuromotor control. (fairfieldcountybusinessjournal.com)
Under such conditions, a strategy of spine stiffening through pre-activated, low-level muscle coactivation along with continuous trunk muscle adjustments in response to unstable sitting perturbations are needed to maintain trunk postural control. (fairfieldcountybusinessjournal.com)
Therefore, the present study aimed to compare the response patterns and neuromuscular control between PD patients with and without FOG and healthy controls (HCs) after postural perturbations. (figshare.com)
Reactive postural control, largely regulated by brain stem centers, seems to be modulated by different mechanisms than those governing freezing of gait. (figshare.com)
The control group ( n = 20) walked without perturbations. (frontiersin.org)
Altogether, our findings show that treadmill walking decreases the complexity of CoP adjustments, suggesting neuromuscular adaptations in balance control during a short training period. (frontiersin.org)
What is Postural Control? (liveyourlifept.com)
Postural control is maintaining or restoring your balance during static and dynamic activity.1 Examples include maintaining good posture while standing or sitting or keeping your balance when walking. (liveyourlifept.com)
Hence, stiffer muscles potentially increase the efficiency of postural control mechanism. (biomedcentral.com)
Postural control can be defined as the control of the body's position in space for the purposes of balance and orientation. (iomcworld.org)
The changes of postural control among young adults according to their body mass index classification and gender during bipedic stance and unipedic stance were investigated. (um.edu.my)
Then, postural control in bipedic stance and stance with toe-extension for young adults was examined. (um.edu.my)
In addition, the changes of postural control and electromyography response on the support surface perturbation among healthy middle-aged adult and transtibial amputee were investigated. (um.edu.my)
There is also no gender effect with human balance control found for both middle-aged adult and transtibial amputee. (um.edu.my)
Furthermore, the relationship of the anthropometric variable with postural control among transtibial amputee and age-matched able-bodied group were evaluated. (um.edu.my)
None of the variables such as age, weight, height, Q-angle, body mass index, skinfold measurement and foot sensations were found to be a predictor for postural control among TTA. (um.edu.my)
Human stick balancing is investigated in terms of reaction time delay and sensory dead zones for position and velocity perception using a special combination of delayed state feedback and mismatched predictor feedback as a control model. (aip.org)
Postural control strategies are divided into pre- and post-disturbance moments, known as "predictive" (anticipatory) and "reactive" (compensatory) postural control, respectively [ 7 ]. (biomedcentral.com)
The contraction of the calf muscles is in response to the perturbation of the bus moving forward, rather than by voluntary control, and therefore it happens more quickly than voluntary initiation of movement. (danceadvantage.net)
In conclusion, subjects with CAI have an impaired postural control. (thieme-connect.de)
However, there was no effect on dynamic postural control. (thieme-connect.de)
Individuals with NP display altered neural control of the neck musculature in response to rapid, unanticipated full body postural perturbations. (birmingham.ac.uk)
Lee Y, Ganesan M, Aruin AS , A single-session training of ball-throwing exercise improves balance control in individuals with multiple sclerosis. (uic.edu)
Lee, Yunju and Aruin, Alexander S The Effect of a Cognitive Task and Finger Touch on Standing Balance Control. (uic.edu)
Stance-related changes in postural control during hand pushing. (uic.edu)
Postural control during real and virtual obstacle avoidance. (uic.edu)
Feedforward and feedback components of postural control and their relationship: what's known and what's not? (uic.edu)
The interaction of the individual with the task and the environment develops postural control. (iomcworld.org)
Feed forward postural control refers to the postural adjustments made in response to the anticipation of a voluntary or a self-generated movement that may be destabilizing in while feedback postural control refer to the postural adjustments made in reaction to sensory stimuli from the externally generated perturbation. (iomcworld.org)
This study aimed to investigate the effect of 8 weeks of aquatic exercises on postural control and balance recovery strategies. (ac.ir)
The postural control and balance recovery strategies during sudden movement by treadmill were evaluated using the Biodex and motion analysis system. (ac.ir)
This complexity of action-reaction mechanisms, present in postural management, necessarily requires that all the functions relating to the control of movement and posture are distinct but interdependent. (getpersonalgrowth.com)
Postural control, the ability to control the body's position in space, is considered a critical aspect of health outcomes. (mdpi.com)
This current study aimed to investigate the effects of age and visual contribution on postural control. (mdpi.com)
Then, three PCA-based variables were computed for each PM: the relative explained variance of PM-position (PP_rVAR) and of PM-acceleration (PA_rVAR) for measuring the composition of postural movements and of postural accelerations, respectively, and the root mean square of PM-acceleration (PA_RMS) for measuring the magnitude of neuromuscular control. (mdpi.com)
This Funding Opportunity Announcement (FOA) invites applications that propose basic and/or clinical studies to investigate central and peripheral control of balance in older adults and/or in relevant animal models. (nih.gov)
In addition, the manner in which the central nervous system organizes these sensory inputs for balance control may also show age-related modifications. (nih.gov)

Technical improvements have resulted in the refinement of eye movement analysis (computerized electronystagmography (ENG) and led to the development of tests of rotation (rotary chair test) and standing balance / posture (computerized dynamic posturegraphy). (juniperpublishers.com)

Therefore, the aims of this dissertation were to assess the changes of postural stance balance among young adults, middle-aged adults and transtibial amputees. (um.edu.my)
These results suggest that the first balance recovery stepping response among young adults is automatic. (iucc.ac.il)
Furthermore, young adults seem to have sufficient motor-cognitive resources to perform concurrently both balance recovery and cognitive tasks with no interference effects. (iucc.ac.il)
The purpose of this study is to compare the balance recovery mechanisms among young adults in an impending loss of balance. (pstu.ru)
Increased ankle muscle co-contraction is indeed observed in young adults when standing in challenging balance conditions, and in elderly relative to young adults during normal stance. (biorxiv.org)
To this end, principal component analysis (PCA) was applied to extract movement components/synergies (i.e., principal movements, PMs) from kinematic marker data of bipedal balancing on stable and unstable surfaces with eyes closed and open, pooled from 17 older adults (67.8 ± 6.6 years) and 17 young adults (26.6 ± 3.3 years), one PCA-analysis for each surface condition. (mdpi.com)

Conclusions: Automatic postural reactions after a sudden perturbation are similar between PD subgroups with and without FOG but different from HCs. (figshare.com)

Unlike gait initiation, the compensatory stepping often occurs without an anticipatory postural adjustment (APA), in which body weight is shifted to the swing leg first and then back to the stance leg prior to foot lifting. (nau.edu)

There is a chain of muscular contractions up the body through the quads, gluteals, hip flexors, and postural muscles as a result that are the body's way of attempting to right the body against the force of the bus moving. (danceadvantage.net)
The aim of this study was to assess the activation of the sternocleidomastoid (SCM) and splenius capitis (SC) muscles in response to unanticipated, full body perturbations in individuals with chronic neck pain (NP) and age-matched healthy controls (HC). (birmingham.ac.uk)
Individuals with NP, as compared to HC, demonstrated delayed onset times and reduced EMG amplitude of the SCM and SC muscles in response to all postural perturbations. (birmingham.ac.uk)
Twofactor general linear models examined differences between the 2 subject groups and 12 recorded muscles of the trunk and lower leg in the percentage of trials with bursts of EMG activation as well as the amplitudes of integrated EMG activation for each perturbation direction. (smith.edu)
The subjects with LBP exhibited 1) higher baseline EMG amplitudes of the erector spinae muscles before perturbation onset, 2) fewer early-phase activations at the internal oblique and gastrocnemius muscles, 3) fewer late-phase activations at the erector spinae, internal and external oblique, rectus abdominae, and tibialis anterior muscles, and 4) higher EMG amplitudes of the gastrocnemius muscle following the perturbation. (smith.edu)
By co-contracting their ankle muscles in anticipation of a perturbation, subjects can increase their ankle stiffness, which slows down their fall during the neural delay. (biorxiv.org)
L' balance and movements are guaranteed by important physiological mechanisms to which the vestibular functions (labyrinth), cerebellum, reticular formation, visual receptors and, to a lesser extent, auditory, touch and pressure exteroceptors (of the plant feet in particular) and proprioceptors of joint capsules, tendons, muscles and viscera (enteroreceptors). (getpersonalgrowth.com)

Results from the univariate analyses and PCA significantly indicated that the three horizontal lifting methods created less perturbation than the vertical lifting method. (cdc.gov)

Inter-individual Balance Adaptations in Response to Perturbation Treadmill Training in Parkinson Disease. (uni-heidelberg.de)

Ten male below-knee amputees were instructed to stand quietly on the Biodex® balance platform while wearing solid ankle cushion heel (SACH), single axis (SA) and energy storage and release (ESAR) prosthetic foot under different visual input conditions (eyes-opened and eyes-closed). (biomedcentral.com)
Effects of a 4-week exercise program on balance using elastic tubing as a perturbation force for individuals with a history of ankle sprains. (thieme-connect.de)
The model suggests that ankle stiffness should be increased in anticipation of perturbations, for example by muscle co-contraction, so as to slow down body fall during the neural response delay. (biorxiv.org)
According to our model, increasing ankle stiffness only improves balance if it is accompanied by a decrease in neural feedback. (biorxiv.org)
Centre of pressure excursions in four 60 s balance conditions, two minute walk test, passive ankle and knee range of motion, Haemophilia Joint Health Score, and Haemophilia Early Arthropathy Detection with Ultrasound score were measured in eight men with haemophilia (people with heamophilia, PWH), and eight age-matched men without haemophilia (people without heamophilia, PWOH). (canterbury.ac.uk)

Perturbation Treadmill Training Improves Clinical Characteristics of Gait and Balance in Parkinson's Disease. (uni-heidelberg.de)
Dopaminergic modulation of multi-muscle synergies in postural tasks performed by patients with Parkinson's disease. (nih.gov)
OBJECTIVES: We explored the effects of dopamine-replacement drugs on multi-muscle synergies stabilizing center of pressure coordinate and their adjustments prior to a self-triggered perturbation in patients with Parkinson's disease. (nih.gov)
Developing a dynamic multimodal imaging method to study gait and balance in Parkinson's disease. (ncl.ac.uk)

During upright stance, balance corrections appear to be triggered by signals presumably located within the lower trunk or pelvis and sensory feedback is required from vestibular, visual and somatosensory origin. (iomcworld.org)
Balance involves maintaining the body's center of mass over its base of support while executing motor actions, typically in a bipedal stance, and it is fundamental for daily living activities [ 6 ]. (biomedcentral.com)

The purpose of this study was to assess the feasibility of using a simple clinical tool to evaluate the impact of diabetes and fall history on reactive balance in older adults. (nih.gov)
Older adults use different postural strategies that aim to increase the safety margin and stabilize the body to perform the movement, according to the requirements imposed, and this should be considered in rehabilitation protocols. (biomedcentral.com)
This FOA is driven by the need to address a major gap in our understanding of how aging impacts the vestibular system, which, when impaired, contributes to balance problems and an increased risk of falls in older adults. (nih.gov)
Additionally, given that balance impairment can be attributed to a number of factors (e.g. sensory, motor, cognitive, psychological,and vascular function), understanding the contribution of age-related vestibular loss, and how this interacts with these factors, is critical for informing interventions and treatments for balance problems and falls in older adults. (nih.gov)

Participants stood on a moveable platform while random perturbations were imposed. (figshare.com)
Participants stood on a moveable platform during which 32 randomized postural perturbations (eight repetitions of four perturbation types: 8 cm forward slide (FS), 8 cm backward slides, 10° forward tilt, and 10° backward tilt) with varying inter-perturbation time intervals were performed over a period of 5 min. (birmingham.ac.uk)

After a perturbation, when identifying a trainee's trunk and arm reactive balance response, the software controls the motor of the PerStBiRo system to stop the perturbation. (bgu.ac.il)

Studies involving participant with conditions that may affect balance or that did not report measures of onset or amplitude of electromyography (EMG), COP, or kinematics were excluded. (biomedcentral.com)

Balance was assessed via the National Institutes of Health Toolbox Standing Balance Test, and lower extremity sensation was assessed using vibratory perception threshold and Semmes-Weinstein monofilaments. (nih.gov)

to minimize the effect of perturbations when segmental oscillation is allowed, hip mechanisms are used. (iomcworld.org)

None of the areas measured were correlated with the composite score of the sensory organization test and, as such, must be considered as an adjunct measure to characterize the postural limitations in those patients. (researchgate.net)
Aging is characterized by functional changes in the sensory, neurological and musculoskeletal systems, affecting motor tasks including gait and postural balance. (unil.ch)

Neck pain is related to impaired postural balance among patients and is highly prevalent among workers with high postural demands, for example, cleaners. (medscape.com)
However, differences in automatic postural reactions between patients with and without FOG in response to perturbation are at present unclear. (figshare.com)
In patients with balance impairment, balance correcting steps are often too small, forcing patients to take more than two steps. (nih.gov)

starting 100 ms prior to and 500 ms after the perturbation onset. (birmingham.ac.uk)

With ageing, neural feedback delays are prolonged, posing a critical threat to balance. (biorxiv.org)
We study a generic model of stabilisation with neural delays to understand how the organism should adapt to challenging balance conditions. (biorxiv.org)
We present a model of standing balance that shows that this postural strategy provides partial compensation for the increase in neural delays with ageing. (biorxiv.org)

The ratio of the angular position and angular velocity for 44 successful balancing trials by 8 human subjects was used to validate the numerical results. (aip.org)
Comparison of actual human stick balancing data and numerical simulations based on the mismatched predictor feedback model provided a plausible range of parameters: position detection threshold 1°, velocity detection threshold between 4.24 and 9.35°/s, and delay mismatch around 100-150 ms. (aip.org)
Seven perturbations were applied with a progressive velocity of the perturbation, in the antero-posterior direction. (pstu.ru)

WALLINGFORD, CONNECTICUT, March 1, 2022 - A new report from Gaylord Specialty Healthcare's Milne Institute for Healthcare Innovation was published today in the journal JMIR Rehabilitation and Assistive Technologies evaluating the effect of a new balance perturbation module on balance impairments following an acute stroke. (gaylord.org)

Rusaw D., Hagberg K., Nolan L., Ramstrand N. The contribution of the prosthesis and weight bearing on EMG response latency following platform perturbation in transtibial prosthesis users. (gu.se)
If this response is not fast or forceful enough to counterbalance the perturbation and upright the passenger, he or she will either take a step forward or fall. (danceadvantage.net)

Balance recovery abilities during perturbed walking and concurrently performing cognitive tasks has rarely been investigated although it provides more ecological information in regard to real-life situations than perturbations during single-task conditions (i.e., just walking). (iucc.ac.il)

Indeed, acute vestibulogenic changes, the effects of a lesion or the functional unloading of the otolithic gravity receptors in space result in dramatic symptoms of imbalance and disorientation, including reduced muscle tone, gait and postural ataxia, and illusory self-orientation and self-motion sensations. (nih.gov)
In the absence of perturbation, the muscle contracts eccentrically to resist the gravitational forces. (biomedcentral.com)
Research undertaken in USA and Israel has shown strong indications that the vicious circle of muscle weakness and time delay of the Central Nervous System (CNS) that causes gait and balance impairment could be weakened by applying unexpected external motion perturbations. (unil.ch)
T here are three scenarios that may elicit involuntary muscle contractions that are sufficiently strong to bring about the involuntary discharge of a firearm: sympathetic contractions, loss of balance and startle reaction. (captainsjournal.com)
Shorter and stiffer shoulder straps combined with a higher and tighter load placement on the back provide the best combination in terms of balance, muscle activation and energy expenditure. (mdpi.com)

Gait and balance disturbances in elderly are the main risk factor for falling. (unil.ch)
Inability to survive balance disturbances. (girafferollingcane.com)
On many occasions in sports, athletes, when executing motor skills, can experience balance disturbances such as when tackling opponents in team sports and combat sports, cutting maneuvers, slippery turf, strong winds or waves, for example when surfing on a board, or when managing moguls in alpine skiing. (opensportssciencesjournal.com)

Nevertheless, the improvement of plantar pressure distribution of adolescents with ID by Swiss Ball balance training remains unclear. (researchsquare.com)

When a threat to balance (a perturbation) is predicted, a feedforward mechanism is triggered in advance, to help the individual counteract mechanical effects that the disturbance may cause. (biomedcentral.com)

The findings have eliminated the related variables as possible balance-related factors for transtibial amputees for future research. (um.edu.my)

Can they survive predictable and unpredictable perturbations? (girafferollingcane.com)

Such findings were most pronounced following the FS postural perturbation (healthy vs. NP for SCM 83.3 ± 8.0 vs. 86.3 ± 4.4 and SC 75.6 ± 3.5 vs. 89.3 ± 4.2), which was also associated with the greatest change (expressed in % relative to baseline) in EMG amplitude (healthy vs. NP for SCM 206.6 ± 50.4 vs. 115.9 ± 15.7 and SC 83.4 ± 19.2 vs. 69.2 ± 10.9) across all postural perturbations types. (birmingham.ac.uk)

Healthy subjects correct such perturbations with either one or two large steps, or without taking any steps, hinging rapidly at the hips while swinging the arms forward as a counterweight. (nih.gov)
For each perturbation, the subjects were classified according to their ability to recover balance: "no step" and step forward or hold the rope of the safety vest support. (pstu.ru)
This provides a novel and functional interpretation for the decrease in spinal feedback observed during ageing, and observed in young subjects when they stand in challenging balance conditions. (biorxiv.org)

This study aimed to explore the ability to overcome unannounced surface perturbations of different magnitudes during standing and walking under single-task and dual-task conditions. (iucc.ac.il)
Cognitive performance was also unaffected by the postural challenges in all task conditions. (iucc.ac.il)

Further research on the explanatory mechanisms of balance training is warranted, and other training modalities should be considered. (thieme-connect.de)

Automatic postural reactions serve as a protective strategy to prevent falling after perturbations. (figshare.com)

Occupational and physical therapists are helpful in addressing home safety and providing a structured balance-rehabilitation program. (medscape.com)

Postural balance, which refers to the essential ability of maintaining daily functions and sports activities, is one of the major concerns in society. (um.edu.my)

Anatomy2

Diseases3

Analytical, Diagnostic and Therapeutic Techniques and Equipment2

Phenomena and Processes4

Information Science1

Health Care2

Stability38

Anticipatory postural adjustments6

Evaluating postural control1

Sway7

Instability10

Responses10

Control41

Posture1

Young adults6

Conclusions1

Compensatory1

Muscles7

Methods1

Adaptations1

Ankle5

Parkinson's Disease4

Stance2

Older adults4

Stood on a moveable platform2

Reactive balance1

Electromyography1

Lower extremity1

Segmental1

Sensory2

Patients3

Onset1

Neural3

Velocity3

Impairments1

Response2

Tasks1

Muscle5

Disturbances3

Unclear1

Feedforward1

Transtibial1

Predictable1

Findings1

Subjects3

Task2

Mechanisms1

Automatic1

Rehabilitation program1

Refers1