Center-of-Pressure Parameters Used in the Assessment of Postural Control

Palmieri, Riann M.; Ingersoll, Christopher D.; Stone, Marcus B.; Krause, B. Andrew

doi:10.1123/jsr.11.1.51

Cited by 367 publications

(305 citation statements)

References 49 publications

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“…The reach distance obtained during each trial was normalized to the length of the participants' lower limb, and the mean of 6 test trials was used for analysis. 31 The alignment of the nonstance extremity was standardized and placed in a position of 30° of hip flexion and 45° of knee flexion. Participants performed 5 trials, with a 45-second rest between each trial.…”

Section: Methodsmentioning

confidence: 99%

Six Weeks of Balance Training Improves Sensorimotor Function in Individuals With Chronic Ankle Instability

Sefton¹,

Yarar²,

Hicks-Little³

et al. 2011

J Orthop Sports Phys Ther

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T he tendency toward repeated ankle sprains and recurring symptoms (eg, pain, weakness, giving way) has been termed "chronic ankle instability" (CAI) 35 and reported to occur in as high as 40% to 70% of individuals who have sustained a lateral ankle sprain. 7,23,45 Changes in sensorimotor system function are thought to be involved in the decreased postural control and joint position awareness and increased instability found in individuals with CAI. 13,24,46 T T STUDY DESIGN: Prospective cohort study. T T OBJECTIVE:To assess the effect of 6 weeks of balance training on sensorimotor measures previously found to be deficient in participants with chronic ankle instability (CAI). T T BACKGROUND:CAI is the tendency toward repeated ankle sprains and recurring symptoms, occurring in 40% to 70% of individuals who have previously sustained a lateral ankle sprain. Recent studies have found deficits in sensorimotor measures in individuals with CAI. As balance training is a common component of ankle rehabilitation, understanding its effect on the sensorimotor system in individuals with CAI may enable us to optimize protocols to better utilize this rehabilitation method. T T METHODS:Twelve participants with CAI and 9 healthy volunteers participated. Independent variables were group (CAI, control) and time (pretraining, posttraining). Participants with CAI who completed a 6-week balance training program and healthy controls who did not get any training were pretested and posttested at the beginning and at the end of 6 weeks. T T RESULTS:The individuals in the CAI group who performed balance training demonstrated better performance than control participants on baselineadjusted posttraining measures of dynamic balance in the anterior medial (P = .021), medial (P = .048), and posterior medial directions (P = .030); motoneuron pool excitability Hmax/Mmax ratio (P = .044) and single-limb presynaptic inhibition (P = .012); and joint position sense inversion variable error (P = .017). It may be of note that no systematic differences were detected for static balance or plantar flexion joint position sense tasks. T T CONCLUSIONS:After 6 weeks of balance training, individuals with CAI demonstrated enhanced dynamic balance, inversion joint position sense, and changes in motoneuron pool excitability compared to healthy controls who did not train. T T LEVEL OF EVIDENCE:Therapy, level 2b.

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Section: Methodsmentioning

confidence: 99%

Six Weeks of Balance Training Improves Sensorimotor Function in Individuals With Chronic Ankle Instability

Sefton¹,

Yarar²,

Hicks-Little³

et al. 2011

J Orthop Sports Phys Ther

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“…Standing in a quiet, static position on a force platform, one can measure postural stability as a function of ground-reaction forces. 33 Using balance tests that challenge sensory inputs may provide more sensitive measures of balance that are more informative. The determinant of which balance outcome to use in a study should depend on the population of interest and the research question.…”

Section: Introductionmentioning

confidence: 99%

A Systematic Review of Yoga for Balance in a Healthy Population

Jeter

Nkodo

Moonaz

et al. 2014

The Journal of Alternative and Complementary Medicine

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Objective: A systematic review was done of the evidence on yoga for improving balance. Design: Relevant articles and reviews were identified in major databases (PubMed, MEDLINE Ò , IndMed, Web of Knowledge, EMBASE, EBSCO, Science Direct, and Google Scholar), and their reference lists searched. Key search words were yoga, balance, proprioception, falling, fear of falling, and falls. Included studies were peerreviewed articles published in English before June 2012, using healthy populations. All yoga styles and study designs were included. Two (2) raters individually rated study quality using the Downs & Black (DB) checklist. Final scores were achieved by consensus. Achievable scores ranged from 0 to 27. Effect size (ES) was calculated where possible. Results: Fifteen (15) of 152 studies (age range 10-93, n = 688) met the inclusion criteria: 5 randomized controlled trials (RCTs), 4 quasi-experimental, 2 cross-sectional, and 4 single-group designs. DB scores ranged from 10 to 24 (RCTs), 14-19 (quasi-experimental), 6-12 (cross-sectional), and 11-20 (single group). Studies varied by yoga style, frequency of practice, and duration. Eleven (11) studies found positive results ( p < 0.05) on at least one balance outcome. ES ranged from -0.765 to 2.71 (for 8 studies) and was not associated with DB score. Conclusions: Yoga may have a beneficial effect on balance, but variable study design and poor reporting quality obscure the results. Balance as an outcome is underutilized, and more probing measures are needed.

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“…Force platform posturography is a common method for quantifying balance performance. Various parameters derived from the center of pressure (COP) signal provide different types of information on postural control mechanisms [7]. Displacements of the COP in anteroposterior and/or mediolateral directions are used in the analysis of postural sway [8,9].…”

Section: Introductionmentioning

confidence: 99%

Expanded Disability Status Scale (EDSS) estimation in multiple sclerosis from posturographic data

et al. 2013

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Expanded disability status scale (EDSS) is the most widely used clinical scale to evaluate levels of multiple sclerosis (MS). As MS can lead to disruptions in the regulation of balance and the disability can be evaluated by force platform posturography, we have developed in this study a new strategy to estimate EDSS from postural data. 118 volunteers with EDSS ranging from 0 to 4.5 participated in this study, with eyes closed. By using second-order polynomial regression models, EDSS was estimated from two postural sway parameters, respectively, the length and the surface and four recurrence quantification analysis (RQA) parameters: percentage of recurrence (%Rec), Shannon entropy (Ent), mean diagonal line length (LL) and trapping time (TT). In addition, all four RQA parameters were calculated for position, instantaneous velocity and acceleration of the center of pressure. In order to select the most accurate method for estimating EDSS, four statistical indices (percentage of agreement, underestimation and overestimation, as well as mean error) were calculated comparing clinical and estimated EDSS scores. The results demonstrate that estimations of EDSS from surface, %Rec and LL of position, best agreed with clinical scores. This study emphasizes the possibility of distinguishing EDSS scores using postural sway and RQA parameters.

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Center-of-Pressure Parameters Used in the Assessment of Postural Control

Cited by 367 publications

References 49 publications

Six Weeks of Balance Training Improves Sensorimotor Function in Individuals With Chronic Ankle Instability

Six Weeks of Balance Training Improves Sensorimotor Function in Individuals With Chronic Ankle Instability

A Systematic Review of Yoga for Balance in a Healthy Population

Expanded Disability Status Scale (EDSS) estimation in multiple sclerosis from posturographic data

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