Visual and proprioceptive contributions to postural control of upright stance in unilateral vestibulopathy

Eysel‐Gosepath, Katrin; McCrum, Christopher; Epro, Gaspar; Brüggemann, Gert–Peter; Karamanidis, Kiros

doi:10.1080/08990220.2016.1178635

Cited by 30 publications

(26 citation statements)

References 32 publications

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“…We also found that balance performance was largely affected by vision and floor condition, and individuals swayed more with eyes closed, and on the unstable floor. These findings also agree well with previous findings, where impaired visual input decreases postural stability and unstable floor affects somatosensory inputs, resulting in poor balance [10,12,[23][24][25][26][27][28][29].…”

Section: Discussionsupporting

confidence: 93%

Effect on the Center of Pressure of Vision, Floor Condition, and the Height of Center of Mass During Quiet Standing

Kim

Lim

Choi

2021

Physical Therapy Korea

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BalanceCenter of mass Center of pressure Quiet standing Background: Theoretically, balance is affected by the height of center of mass (COM) during quiet standing. However, no one examined this in humans with variables derived from the center of pressure (COP). Objects:We have conducted balance experiment to measure COP data during quiet standing, in order to examine how the COP measures were affected by the height of COM, vision, floor conditions, and gender.Methods: Twenty individuals stood still with feet together and arms at sides for 30 seconds on a force plate. Trials were acquired with three COM heights: 1% increased or decreased, and not changed, with two vision conditions: eyes closed (EC) and eyes open (EO), and with two floor conditions: unstable (foam pad) and stable (force plate) floor. Outcome variables included the mean distance, root mean square distance, total excursion, mean velocity, and 95% confidence circle area.Results: All outcome variables were associated with the COM height (p < 0.0005), vision (p < 0.0005), and floor condition (p < 0.003). The mean velocity and 95% confidence circle area were 5.7% and 21.8% greater, respectively, in raised COM than in lowered COM (24.6 versus 23.2 mm/s; 1,013.4 versus 832.3 mm 2 ). However, there were no interactions between the COM height and vision condition (p > 0.096), and between the COM height and floor condition (p > 0.183) for all outcome variables. Furthermore, there was no gender difference in all outcome variables (p > 0.186). Conclusion:Balance was affected by the change of COM height induced by a weight belt in human. However, the effect was not affected by vision or floor condition. Our results should inform the design of balance exercise program to improve the outcome of the balance training.

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Section: Discussionsupporting

confidence: 93%

Effect on the Center of Pressure of Vision, Floor Condition, and the Height of Center of Mass During Quiet Standing

Kim

Lim

Choi

2021

Physical Therapy Korea

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“…For this explorative analysis, we pooled previously collected data of patients with unilateral peripheral vestibular disorder from two previous studies, the first involving a tripping while walking task 17 and the second involving stance posturography tasks. 33 For each parameter of interest (see below) we included all patients with data from each variable. In total, 12 patients were included with age, height and weight of 50.5(5.4) years, 169.7(6.6) cm and 72.5(9.6) kg respectively (means and SD).…”

Section: Methodsmentioning

confidence: 99%

“…The extrapolated CoM was defined as follows: Our previous study of stance stability assessed many variables from different sensory conditions in these patents. 33 In the current study, we include three variables and two tasks distribution normality of the results was checked prior to applying statistical analysis using the Shapiro-Wilk test, which revealed normal distributions for all parameters (P > .05).…”

Section: Insert Figmentioning

confidence: 99%

“…To address this, we collated previously collected data from the dynamic gait stability measurements 17 and from posturography measurements conducted with the same patients. 33 An explorative analysis was conducted to determine correlations between dynamic stability control following a trip and COP parameters during a forward leaning task and during quiet standing with the eyes open and closed. Based on previous results demonstrating a lack of relationship between static and dynamic stability tasks, [20][21][22] we did not expect to find a consistent relationship between the dynamic stability parameters and the COP parameters during quiet standing, but we suspected that the forward lean task may reveal some correlations with the dynamic task due to the fact that the anterior limit of stability is more challenged in this task than during quiet standing.…”

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confidence: 99%

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Associations Between Bipedal Stance Stability and Locomotor Stability Following a Trip in Unilateral Vestibulopathy

McCrum

Eysel‐Gosepath

Epro

et al. 2017

Journal of Applied Biomechanics

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Posturography is used to assess balance in clinical settings, but its relationship to gait stability is unclear. We assessed if dynamic gait stability is associated with standing balance in 12 patients with unilateral vestibulopathy. Participants were unexpectedly tripped during treadmill walking and the change in the margin of stability (MoS) and base of support (BoS) relative to nonperturbed walking was calculated for the perturbed and first recovery steps. The center of pressure (COP) path during 30-s stance with eyes open and closed, and the distance between the most anterior point of the COP and the anterior BoS boundary during forward leaning (A), were assessed using a force plate. Pearson correlations were conducted between the static and dynamic variables. The perturbation caused a large decrease in the BoS, leading to a decrease in MoS. One of 12 correlations was significant (MoS at the perturbed step and A; r = -.595, P = .041; nonsignificant correlations: .068 ≤ P ≤ .995). The results suggest that different control mechanisms may be involved in stance and gait stability, as a consistent relationship was not found. Therefore, posturography may be of limited use in predicting stability in dynamic situations.

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“…However, during normal human movement, multiple sources of sensory information are integrated to ensure accurate positioning of the limb (assuming closed loop control). This sensory information is obtained from the visual, proprioceptive and vestibular systems (Ernst & Bülthoff, 2004; Eysel-Gosepath et al., 2016; Ponzo et al., 2018). Together, the information is integrated to create an internal representation of the body and current position of any limb (Dijkerman & de Haan, 2007; Makin et al., 2008; Tsakiris, 2010).…”

Section: Introductionmentioning

confidence: 99%

Shoulder Joint Position Sense Can Be Reduced by Sensory Reference Frame Transformations

2021

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Joint position sense (JPS) is commonly evaluated using an angle replication protocol with vision occluded. However, multiple sources of sensory information are integrated when moving limbs accurately, not just proprioception. The purpose of this study was to examine different availability of vision during an active JPS protocol at the shoulder. Specifically, the effects of four conditions of vision availability were examined for three target shoulder elevation angles (50°, 70° & 90°): vision occluded continuously (P-P); vision available continuously (VP-VP); vision occluded only during target memorization (P-VP); and vision occluded only during target position replication (VP-P). There were 18 participants ( M age = 21, SD = 1 years). We used separate repeated ANOVAs to examine the effect of condition and target angle on participants’ absolute error (AE, a measure of accuracy) and constant error (CE, a measure of directional bias). We found a significant main effect for condition and angle for both dependent variables ( p < 0.01), and follow-up analysis indicated that participants were most accurate in the VP-VP condition and least accurate in the P-VP condition. Further follow-up analysis showed that accuracy improved with higher target elevation angles, consistent with previous research findings. Constant error results were similar, as there was a prominent tendency to overshoot the target. Unsurprisingly, participants performed best at the angle replication protocol with their eyes open. However, while accuracy was reduced when vision was occluded during target memorization, it was restored during target replication. This finding may have indicated an accuracy cost due to introduced noise when transforming sensory information from a proprioceptive reference frame into a visual reference frame.

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Visual and proprioceptive contributions to postural control of upright stance in unilateral vestibulopathy

Cited by 30 publications

References 32 publications

Effect on the Center of Pressure of Vision, Floor Condition, and the Height of Center of Mass During Quiet Standing

Effect on the Center of Pressure of Vision, Floor Condition, and the Height of Center of Mass During Quiet Standing

Associations Between Bipedal Stance Stability and Locomotor Stability Following a Trip in Unilateral Vestibulopathy

Shoulder Joint Position Sense Can Be Reduced by Sensory Reference Frame Transformations

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