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The impact of lower extremity streng...

Garbalosa, Juan Carlos.

The impact of lower extremity strength on obstacle clearance in the elderly.

Record Type:	Electronic resources : Monograph/item
Title/Author:	The impact of lower extremity strength on obstacle clearance in the elderly./
Author:	Garbalosa, Juan Carlos.
Description:	243 p.
Notes:	Source: Dissertation Abstracts International, Volume: 58-07, Section: B, page: 3593.
Contained By:	Dissertation Abstracts International58-07B.
Subject:	Gerontology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9802636
ISBN:	9780591524215

The impact of lower extremity strength on obstacle clearance in the elderly.
Garbalosa, Juan Carlos.

The impact of lower extremity strength on obstacle clearance in the elderly. - 243 p.

Source: Dissertation Abstracts International, Volume: 58-07, Section: B, page: 3593.

Thesis (Ph.D.)--The Pennsylvania State University, 1997.

The aim of this study was to determine what differences exist in the gait kinematics and muscular responses, when a sudden obstacle is presented in the gait path, between elderly individuals with and without a lower extremity strength deficit. Both groups consisted of fifteen elderly subjects who were free of neuromuscular or cognitive impairments that would affect their gait and were matched according to age, gender and medication usage.

ISBN: 9780591524215Subjects--Topical Terms:

168436
Gerontology.

The impact of lower extremity strength on obstacle clearance in the elderly.
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020 $a 9780591524215
035 $a (UMI)AAI9802636
035 $a AAI9802636
040 $a UMI $c UMI{me_controlnum}
100 1 $a Garbalosa, Juan Carlos. $3 1000006440
245 1 4 $a The impact of lower extremity strength on obstacle clearance in the elderly.
300 $a 243 p.
500 $a Source: Dissertation Abstracts International, Volume: 58-07, Section: B, page: 3593.
500 $a Adviser: Peter R. Cavanagh.
502 $a Thesis (Ph.D.)--The Pennsylvania State University, 1997.
520 $a The aim of this study was to determine what differences exist in the gait kinematics and muscular responses, when a sudden obstacle is presented in the gait path, between elderly individuals with and without a lower extremity strength deficit. Both groups consisted of fifteen elderly subjects who were free of neuromuscular or cognitive impairments that would affect their gait and were matched according to age, gender and medication usage.
520 $a Angular displacements of the hip, knee and ankle joints; electromyographic (EMG) activity of the tibialis anterior (TA), gastrocnemius (GAS), biceps femoris (BIC), and rectus femoris (REC); and foot clearance were recorded under two walking conditions. On random trials, a pop up device was activated upon right heel strike, forcing the subject to clear the obstacle during the swing phase of the right lower extremity.
520 $a Similar obstacle (9.7 $\pm$ 4.5, 12.2 $\pm$ 4.4, 13.7 $\pm$ 5.7, and 11.4 $\pm$ 4.7 cm for strong and weak, males and females, respectively) toe clearances were exhibited by the subjects. The subjects cleared the obstacles by primarily increasing the knee joint flexion angle; augmenting it with increased hip joint flexion. The mean knee (83.7 $\pm$ 6.5, 79 $\pm$ 9, 89.3 $\pm$ 11.1, 81.4 $\pm$ 9.9 degrees for strong and weak, males and females, respectively) and hip (17.2 $\pm$ 3.2, 19.4 $\pm$ 9.6, 22.9 $\pm$ 11.5, 28.9 $\pm$ 7.7 degrees for strong and weak, males and females, respectively) flexion and ankle joint ($-$1.8 $\pm$ 6.4, 1.7 $\pm$ 11.1, 10.3 $\pm$ 20.9, 3.5 $\pm$ 10.2 degrees for strong and weak, males and females, respectively) angles at obstacle toe clearance of the groups were not significantly (p $>$.05) different.
520 $a A consistent pattern of increased pre toe clearance EMG activity of the BIC and GAS muscles complimented by a variable pattern of increased pre obstacle TA and post obstacle REC EMG activity was utilized by the subjects to clear the obstacle. No difference (p $>$.05) was detected between the groups in the integrated individual ensemble averaged subtracted standardized time normalized linear envelopes of the four muscles.
590 $a School code: 0176.
650 4 $a Gerontology. $3 168436
650 4 $a Health Sciences, Rehabilitation and Therapy. $3 1000006131
650 4 $a Health Sciences, Human Development. $3 1000006441
690 $a 0351
690 $a 0382
690 $a 0758
710 2 $a The Pennsylvania State University. $3 1000005470
773 0 $t Dissertation Abstracts International $g 58-07B.
790 1 0 $a Cavanagh, Peter R., $e advisor
790 $a 0176
791 $a Ph.D.
792 $a 1997
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9802636