Task-Dependent Postural Control Throughout the Lifespan

Haddad, Jeffrey M.; Rietdyk, Shirley; Claxton, Laura J.; Huber, Jessica E.

doi:10.1097/jes.0b013e3182877cc8

Cited by 90 publications

(83 citation statements)

References 39 publications

(69 reference statements)

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“…These individuals were also able to perform fast gaze shifts (at 0.5 Hz and 1 Hz) with a visual angle of 1508 without losing their balance or needing to repeat any trial -even with their feet in narrow stance [3]. As during quiet upright standing, these individuals are far from their limits of stability [19,29], there is no need for them to limit their postural sway as much as possible in order to avoid falls. Section 5 of the present manuscript shows that the results found in the nine studies (Table 1) could be explained by a more synergistic view of the interaction between postural and active vision tasks.…”

Section: Citationmentioning

confidence: 99%

“…The assumption that one postural task performed simultaneously to an active vision task should be considered as a collaborative situation is supported by recent studies from investigators of the cognitive approach [10,12,16,26,29] with concepts such as ''task-dependent postural control'', ''adaptive postural patterns'' [29]. One should note that these arguments come from the ecological approach although these studies [10,12,16,26,29] did not state that they had validated the ecological (functional) model of postural control [19].…”

Section: The Cognitive Models Of Postural Control Do Not Have a Functmentioning

confidence: 99%

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Active vision task and postural control in healthy, young adults: Synergy and probably not duality

Bonnet

Baudry

2016

Gait & Posture

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In upright stance, individuals sway continuously and the sway pattern in dual tasks (e.g., a cognitive task performed in upright stance) differs significantly from that observed during the control quiet stance task. The cognitive approach has generated models (limited attentional resources, U-shaped nonlinear interaction) to explain such patterns based on competitive sharing of attentional resources. The objective of the current manuscript was to review these cognitive models in the specific context of visual tasks involving gaze shifts toward precise targets (here called active vision tasks). The selection excluded the effects of early and late stages of life or disease, external perturbations, active vision tasks requiring head and body motions and the combination of two tasks performed together (e.g., a visual task in addition to a computation in one's head). The selection included studies performed by healthy, young adults with control and active - difficult - vision tasks. Over 174 studies found in Pubmed and Mendeley databases, nine were selected. In these studies, young adults exhibited significantly lower amplitude of body displacement (center of pressure and/or body marker) under active vision tasks than under the control task. Furthermore, the more difficult the active vision tasks were, the better the postural control was. This underscores that postural control during active vision tasks may rely on synergistic relations between the postural and visual systems rather than on competitive or dual relations. In contrast, in the control task, there would not be any synergistic or competitive relations.

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Section: Citationmentioning

confidence: 99%

Section: The Cognitive Models Of Postural Control Do Not Have a Functmentioning

confidence: 99%

Active vision task and postural control in healthy, young adults: Synergy and probably not duality

Bonnet

Baudry

2016

Gait & Posture

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“…When performing a standing task, the body's degrees of freedom are adjusted to maintain posture and allow performance of a concurrent task. It could be that the redundancies in the degrees of freedom associated with standing at a desk ultimately provide movement flexibility, and permit greater end point accuracy (21,22). In contrast, a seated posture reduces the functional degrees of freedom, leading to a reduced level of functional adaptability to ensure optimisation of task performance (23), while limiting the ability to attenuate perturbations to postural control.…”

Section: Discussionmentioning

confidence: 99%

The effect of standing desks on manual control in children and young adults

et al. 2016

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The aim of the present study was to establish if and how the additional postural constraint of standing affects accuracy and precision of goal directed naturalistic actions. Forty participants, comprising 20 young adults aged 20 -23 years and 20 children aged 9-10 years completed 3 manual dexterity tasks on a tablet laptop with a handheld stylus during two separate conditions (1) while standing (2) while seated. The order of conditions was counterbalanced across both groups of participants. The tasks were (1) a tracking task, where the stylus tracked a dot in a figure of 8 at 3 speeds (2) an aiming task where the stylus moved from dot to dot with individual movements creating the outline of a pentagram (3) a tracing task, where participants had to move the stylus along a static pathway or maze. Root Mean Squared Error (RMSE), movement time and path accuracy, respectively, were used to quantify the effect that postural condition had on manual control.Overall adults were quicker and more accurate than children when performing all 3 tasks, and where the task speed was manipulated accuracy was better at slower speeds for all participants. Surprisingly, children performed these tasks more quickly and more accurately when standing compared to when sitting. In conclusion, standing at a desk while performing goal directed tasks did not detrimentally affect children's manual control, and moreover offered a benefit.

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“…The aim is that those examples are sufficiently representative to be in order to discuss the potential link between the choice of the model and a given pathology. Finally, as explained by Haddad et al, postural control can be -or rather should be -studied with higher level parameters that are well known in control theory, such as perturbation rejection in the case of dual tasking, stability or control strategy [42].…”

Section: Introductionmentioning

confidence: 99%

Which biomechanical models are currently used in standing posture analysis?

Crétual

2015

Neurophysiologie Clinique/Clinical Neurophysiology

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Task-Dependent Postural Control Throughout the Lifespan

Cited by 90 publications

References 39 publications

Active vision task and postural control in healthy, young adults: Synergy and probably not duality

Active vision task and postural control in healthy, young adults: Synergy and probably not duality

The effect of standing desks on manual control in children and young adults

Which biomechanical models are currently used in standing posture analysis?

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