18aging

18aging - 4/12/10 1 Postural Control in the Elderly...

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Unformatted text preview: 4/12/10 1 Postural Control in the Elderly Decrease in postural stability with age Older people = more unstable More postural sway when standing Less able to adapt to postural perturbations 4/12/10 2 Age related changes in systems of postural control Muscular and skeletal changes 40% decrease in strength between 30-80 years. Decrease in range of motion More co-contraction 4/12/10 3 Muscle response a.er a perturba1on is slower in elderly Even slower in elderly with various impairments Small vs Large Perturba1ons Age related changes in systems of postural control Sensory changes Vision Lens elasticity and corneal opacities Proprioceptive Vibration and tactile thresholds higher Vestibular 40% loss in hair cells by 70 years 4/12/10 4 Older adults have exaggerated response to the moving room. Unstable older adults exhibit even greater response. Appears that with aging, older adults can be more easily destabilized based on vision Age related changes in systems of postural control Cognitive changes Number of brain cells and synapses decrease. Leads to decreased cognitive resources which may influence postural control....
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18aging - 4/12/10 1 Postural Control in the Elderly...

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