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The relationship of vestibulo-ocular...

Cascardi, Karen A.

The relationship of vestibulo-ocular reflex (VOR) function to falling in the past year among physically active community-dwelling adults 75 years and older.

紀錄類型:	書目-電子資源 : 單行本
正題名/作者:	The relationship of vestibulo-ocular reflex (VOR) function to falling in the past year among physically active community-dwelling adults 75 years and older./
作者:	Cascardi, Karen A.
面頁冊數:	172 p.
附註:	Source: Dissertation Abstracts International, Volume: 69-08, Section: B, page: 4711.
Contained By:	Dissertation Abstracts International69-08B.
標題:	Gerontology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoeng/servlet/advanced?query=3327717
ISBN:	9780549780496

The relationship of vestibulo-ocular reflex (VOR) function to falling in the past year among physically active community-dwelling adults 75 years and older.
Cascardi, Karen A.

The relationship of vestibulo-ocular reflex (VOR) function to falling in the past year among physically active community-dwelling adults 75 years and older. - 172 p.

Source: Dissertation Abstracts International, Volume: 69-08, Section: B, page: 4711.

Thesis (Ph.D.)--TUI University, 2008.

Falling in the elderly is a major health problem due to its high incidence, severe consequences, and costly medical expenses. Causes for falls are multifaceted and the vestibulo-ocular reflex (VOR) plays a vital role in stabilizing vision during functional activities. The VOR has the ability to modify and adapt over time (plasticity). For clarification, the phrase "VOR function" (in this study) refers to higher frequency gain and phase characteristics tested using the VAT with active head movements. VOR with active head movements as it relates to falling in physically active older adults has not been studied previously.

ISBN: 9780549780496Subjects--Topical Terms:

168436
Gerontology.

The relationship of vestibulo-ocular reflex (VOR) function to falling in the past year among physically active community-dwelling adults 75 years and older.
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245 1 4 $a The relationship of vestibulo-ocular reflex (VOR) function to falling in the past year among physically active community-dwelling adults 75 years and older.
300 $a 172 p.
500 $a Source: Dissertation Abstracts International, Volume: 69-08, Section: B, page: 4711.
500 $a Adviser: Frank Gomez.
502 $a Thesis (Ph.D.)--TUI University, 2008.
520 $a Falling in the elderly is a major health problem due to its high incidence, severe consequences, and costly medical expenses. Causes for falls are multifaceted and the vestibulo-ocular reflex (VOR) plays a vital role in stabilizing vision during functional activities. The VOR has the ability to modify and adapt over time (plasticity). For clarification, the phrase "VOR function" (in this study) refers to higher frequency gain and phase characteristics tested using the VAT with active head movements. VOR with active head movements as it relates to falling in physically active older adults has not been studied previously.
520 $a This cross-sectional study compared balance performance, balance confidence, VOR function, and functional mobility with those who reported falling or not falling in the previous year. Community-dwelling adults 75 and older who regularly participate in a moderate-intensity (3-6 METS) supervised exercise programs was the target population. A simple randomized sampling of fitness/wellness centers and convenience sampling for subject selection of physically active community dwelling adults aged 75 and older was used in this study. There were one hundred twelve study participants.
520 $a The purpose of this study was first, to determine if a relationship existed between VOR function during active head movements and falling in the past year in physically active adults 75 years and older; and second, to determine the extent to which the variability in falling can be explained by VOR function, balance performance, functional mobility and balance confidence.
520 $a General health and fall questionnaires, and Activity-specific Balance Confidence scale (ABC Scale) were administered. Physical testing included: a Dynamic Gait Index test (DGI) for functional mobility, limits of stability (LOS) and modified Clinical Test of Sensory Interaction on Balance (CTSIB) for balance performance, and vestibular autorotation testing (VAT) for measuring high frequency gain and phase characteristics of the VOR during active head movements.
520 $a Results from t tests found ABC scale, DGI, and CTSIB eyes opened on the foam, LOS directional control and maximal excursion) were significantly associated with falling. Logistic regression used to determine the extent falling in the past year was explained by the key variables revealed ABC scale (OR = .972, p = .026) and DGI test (OR = .798, p = .032) were the only variables that was statistically significant.
520 $a VAT testing performed up to one year following a reported fall, did not show VOR abnormalities in physically active older adults in this study. A perspective longitudinal study examining high frequency VOR characteristics with active head motions at predetermined intervals over time comparing levels of physically active older adults and known fall predictors may reveal different results.
590 $a School code: 0622.
650 4 $a Gerontology. $3 168436
650 4 $a Health Sciences, Rehabilitation and Therapy. $3 1000006131
650 4 $a Health Sciences, Recreation. $3 1000005910
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