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Tuesday, August 11, 2020 | History

2 edition of Task and support surface constraints on the coordination and control of posture in older adults found in the catalog.

Task and support surface constraints on the coordination and control of posture in older adults

Sean Clark

Task and support surface constraints on the coordination and control of posture in older adults

by Sean Clark

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Published .
Written in English

    Subjects:
  • Aged -- Health risk assessment.,
  • Falls (Accidents) in old age.,
  • Posture.

  • Edition Notes

    Statementby Sean Clark.
    The Physical Object
    Pagination116 leaves, bound :
    Number of Pages116
    ID Numbers
    Open LibraryOL15496354M

    Older adults' enhanced awareness for fall avoidance is emphasized in posture-cognition dual-task performance. In dual task performance on a moving platform, cognitive resources are utilized to resist an increase in instability even if this instability never exceeds 10–15% of older adults' stability boundary (Rapp et al. ). Nondisabled adults tend to use somatosensory information from their feet in contact with the surface while standing in a controlled environment with a firm base of support (BS) []. Under this condition, somatosensory afferents account for 70 percent of the information required for postural control, while vestibular afferents account for

      Coordination, Balance, Gait and Posture Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. on a support surface can control swaying movements. Pregnancy induces increased sway in a standing posture, causing pregnant women to rely more heavily on visual information to maintain balance. Older adults sway more than younger adults and have greater difficulty.

    many different solutions to a task are available due to the large number of elements that need to be controlled, or degrees of freedom, in the system. In postural control, muscles and joints across the limbs, trunk, and neck must be coordinated to maintain the body’s center of mass (CoM) over the base of support, typically formed by the feet. The. Ankle dorsiflexor strength relates to the ability to restore balance during a backward support surface translation. Gait & Posture. 38(4), Chiu, S-L., Osternig, L.R., Chou, L-S. Concussion induces gait inter-joint coordination variability under conditions of divided attention and obstacle crossing. Gait & Posture. 38(4),


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Task and support surface constraints on the coordination and control of posture in older adults by Sean Clark Download PDF EPUB FB2

Task and support surface constraints on the coordination and control of posture in older adults Public Deposited. Analytics. Downloadable Content The observed adaptations in the coordination and control of posture in response to support surface constraints evidenced in the present studies provide support for the theory of perception and the Author: Sean Clark.

Get this from a library. Task and support surface constraints on the coordination and control of posture in older adults. [Sean Clark]. The purpose of this study was therefore to examine how the control of posture and manual control adapts when performing a manual precision task while standing on a narrow support surface.

Improvements in task-dependent postural control throughout childhood likely contribute to the ability of young adults to control and adjust posture in a complex manner when performing seemingly routine activities, such as when performing a precision manual task, a visual fixation task, Cited by: The ability to control balance during activities of daily living (ADL) is impaired in older adults as a result of deterioration in the sensory systems (i.e., vestibular, visual, somatosensory), the cognitive system (central nervous system), and the musculoskeletal system.

Consequently, many older adults face a risk of falling during their ADL. In most cases, falls and related injuries impair Cited by: 8. Late-cueing of gait tasks on an uneven brick surface impacts coordination and center of mass control in older adults. It is unclear how older adults reorient their bodies under these constraints and whether adaptations are related to declines in physiological characteristics.

In order to determine the age related changes in the relationship between attention and postural control, researchers have (1) compared declines in secondary task performance during the simultaneous performance of a postural task in older versus young adults; and (2) examined the effect of increasing cognitive demands on the control of posture.

Beyond Coordination and Consistency: Postural Control in Challenging Gait Tasks. Whereas coordination and consistency form the foundations of postural control, ability to regulate posture in the face of challenging gait tasks is equally important to successful locomotion (Fig.

Decreased range of motion and loss of spinal flexibility in many older adults can lead to a characteristic flexed or stooped posture Ankle-joint flexibility, critical for postural control, also declines by 50% in women and 35% in men between the ages of 55 and tions of different systems to balance control in the older adult, in the context of different task and environmental constraints.

Motor Systems. It has been shown that young and older adults use different movement strategies to maintain balance in different contexts and with different task goals. The goal of optimal control is to find the movement that minimizes a certain optimality criterion J based on task constraints and equations of motion (including subjects’ specific anthropometric.

We investigated the coordination between posture and manual control in 7- and year-old children, and adults during a precision fitting task as task constraints became more difficult.

Participants fit a block through an opening as arm kinematics, trunk kinematics. The results highlight the impact of task context on postural stability during standing reach in young and older adults.

Interventions for older adults with balance problems should consider. Definition. 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. The interaction of the individual with the task and the environment develops postural control.

Stability refers to maintenance of the centre of mass within the base of support while orientation refers to. Human balance is a multidimensional construct describing a person’s ability to make automatic postural adjustments under various conditions to maintain stability and avoid falling (Berg, ; Winter, ).Accordingly, postural control may be defined as the “act of maintaining, achieving or restoring a state of balance during any posture or activity” (Pollock, Durward, Rowe, & Paul.

Dual-task costs of texting while walking forward and backward are greater for older adults than younger adults. of time constraints on posture choices during an end-state comfort task.

Studies have suggested that proper postural control is essential for the development of reaching. However, little research has examined the development of the coordination between posture and manual control throughout childhood.

We investigated the coordination between posture and manual control in children (7- and year-olds) and adults during a precision fitting task as task constraints. T/F Research demonstrates that older adults decline in both attentional aspects and manipulative aspects of automobile driving tasks.

F T/F In rapid aiming movements, older adults need to make more adjustments at the end of the aiming movement than do young adults. The study used a dual-task (DT) postural paradigm (two tasks performed at once) that included electroencephalography (EEG) to examine cortical interference when a visual working memory (VWM) task was paired with a postural task.

The change detection task was used, as it requires storage of information without updating or manipulation and predicts VWM capacity. In dual-task performance on the stable surface, older adults showed an almost 40% increase in instability compared to single-task.

However, in the sway reference somatosensory condition, stability was the same in single- and dual-task performance, whereas pronounced (15%).

The reduction in the quality and integration of sensory information with aging could increase the alterations in postural control associated with muscle fatigue observed in younger adults. This study aimed to compare changes in postural control and attentional demands due to ankle muscle fatigue, with intact and reduced proprioceptive information at the ankle, between young and older adults.

Progressions include: (1) reducing the base of support, (2) increasing surface compliance to reduce surface somatosensory information for postural orientation, (3) increasing speed or resistance with weights, (4) adding secondary cognitive tasks to automate posture and gait, and (5) limiting visual input of the body with “no body” glasses.Postural control is a key component for the safety performance of daily activities.

Specifically, the control of posture is essential to stabilize the body’s center of mass (COM) relative to the base of support and for the proper alignment of the body with the body’s center of gravity (COG), the support surface, and the surrounding environment.