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Falls are the Leading Cause of Overall Injury Costs

by Bidita Debnath on October 12, 2017 at 12:00 AM
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 Falls are the Leading Cause of Overall Injury Costs

Falls are the second leading cause of accidental or unintentional injury deaths worldwide. Seniors need twice as long as young adults to realize they are falling, a delay that puts them at increased risk for serious injury, according to a new study from the University of Waterloo.

The findings will help shape the development of wearable fall prevention technology and allow clinicians to more accurately identify at-risk individuals. Falls are the leading cause of death and hospitalization in Canada.

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According to the Public Health Agency of Canada between 20 and 30 percent of seniors fall each year. Seniors also make up the fastest growing segment of the global population. By 2040, more than one billion people will be over the age of 65.

"Falling threatens one's survival," said Michael Barnett-Cowan, a kinesiology professor at Waterloo and senior author on the study. "When the nervous system's ability to detect a fall and compensate with protective reflexes diminishes, the risk of injury or death increases significantly.
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"Age and associated delays will need to be seriously considered when designing any aids to help seniors mitigate this risk."

"Measuring fall perception not only is important in prevention efforts, but also provides information about how the brain processes sensory information and how this changes with age," said Julian Lupo, a graduate student and the study's lead author.

To measure fall perception, researchers presented study participants with a sound at different times relative to a supervised fall. They found that young adults required the fall to happen about 44 milliseconds before the sound in order for both cues to be perceived as occurring simultaneously. But adults over 60 years old required fall onset to occur about 88 milliseconds before the sound.

"This lag means that by the time older adults realize they are falling, it's often too late for for them to consciously do anything about it," said Barnett Cowan. "Given that falls are often the catalyst for a transition to long-term care, these findings highlight both the importance of adequate assessement for older adults and the need to expediete new prevention technology."

Falls are a leading cause of overall injury costs in Canada, with a total economic burden of falls estimated to be $6 billion annually. Seniors who are hospitalized for a fall remain in hospital an average of nine days longer than those hospitalized for any other cause.

The study appears in the journal Gait & Posture.

Source: Eurekalert
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