from Part II - Strategies for Prevention
Published online by Cambridge University Press: 04 November 2021
Many studies have now shown that both physical and cognitive factors are important in fall risk. In accordance with the common-cause theory of cognitive ageing, which states that age-related declines in cognitive, sensory, and motor functioning are attributed to a common neurobiological mechanism, there is evidence of shared variance between sensorimotor and cognitive age-related changes. Indeed, cognitive, sensory, and motor inter-relationships strengthen with age [1]. It is, therefore, of little surprise that parameters of the postural control system are influenced by the cognitive demand of a task, particularly in older people. Undertaking daily tasks, such as maintaining upright posture and safely navigating complex environments, requires adequate sensory perception, cognitive integration, and subsequent motor adjustments [2], with increased cognitive processing required with aging [3]. Furthermore, many daily activities require the handling of two or more simultaneous tasks, such as walking while talking, carrying a basket with laundry while navigating the stairs, or crossing a busy road safely [4]. Older people appear not to be able to process multiple tasks as quickly and/or as well as younger adults and such impairments have been linked to falls in older people [5]. Figure 18.1 displays a hypothetical model of how the sensory, cognitive, and motor domains are inter-linked and how these factors and interactions might contribute to falls.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.