東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

FindBook

Google Book

Amazon

博客來

Gait Changes Associated with the Reduced Push-Off from Solid Ankle Foot Orthoses.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Gait Changes Associated with the Reduced Push-Off from Solid Ankle Foot Orthoses./
作者:	Tanor, Joshua.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
面頁冊數:	84 p.
附註:	Source: Dissertations Abstracts International, Volume: 83-05, Section: B.
Contained By:	Dissertations Abstracts International83-05B.
標題:	Biomechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28770908
ISBN:	9798460480913

Gait Changes Associated with the Reduced Push-Off from Solid Ankle Foot Orthoses.
Tanor, Joshua.

Gait Changes Associated with the Reduced Push-Off from Solid Ankle Foot Orthoses. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 84 p.

Source: Dissertations Abstracts International, Volume: 83-05, Section: B.

Thesis (Ph.D.)--Boston University, 2021.

This item must not be sold to any third party vendors.

Ankle foot orthoses (AFOs) are used to improve walking in some lower extremity conditions but AFOs restrict ankle motion resulting in a trade-off in ankle and hip mechanics. While the use of AFOs have been well documented, there still remain gaps in the literature. The first study compared the differences in sagittal plane ankle and hip kinematics and kinetics across three conditions at two speeds in healthy individuals while the second study compared frontal plane kinetics at the hip and knee and vertical ground reaction forces between two conditions at two speeds in healthy individuals.This was studied by collecting and analyzing three-dimensional joint kinematics and ground reaction forces from twelve healthy adults. Participants walked in three conditions (shod; i.e. athletic shoes only and two reduced push-off conditions using solid ankle foot orthoses (SAFOs); i.e. unilateral brace and bilateral brace conditions) and at two speeds (1.25 m/s and 1.5 m/s). In the first study, generalized linear models with general estimating equations were used to compare ankle and hip angles, moments and power for the braced and unbraced sides separately in all three conditions. In the second study, frontal plane kinetics and vertical ground reaction forces in the unbraced limb in the unilateral brace condition were compared to the same side during shod walking using paired sample t-tests.From our first study we found that the reduced push-off from the use of SAFOs results in decreased peak plantarflexion angles and power generation at the ankle and increased peak flexion angles, and first and second peak power generation at the hip in the braced limbs in both unilateral (p ≤ 0.05) and bilateral (p ≤ 0.05) brace conditions at both speeds. On the unbraced side in the unilateral brace condition, there were decreased peak power generation at the ankle at 1.25 m/s and increased peak extension moments, first and second peak power generation at the hip compared to the shod condition (p < 0.05) at both speeds.In the comparison between the unilateral and bilateral brace conditions, the changes in ankle and hip mechanics were similar to the changes between the shod condition and the bilateral brace condition on the unbraced side; in addition, participants also had higher peak extension moments in the unilateral brace condition compared to the bilateral brace condition (p < 0.05). On the braced side, participants had lower peak plantarflexion moments at the ankle and lower peak flexion angles at the hip when walking with bilateral SAFOs, compared to walking with unilateral SAFOs (p < 0.05).In the second study, we found that peak internal knee and hip abduction moments were 3% and 4% higher, respectively, in the unbraced limb in the unilateral brace condition at 1.25 m/s (p ≤ 0.041) compared to the same side in the shod condition. Peak vertical ground reaction force was 3% higher in the unbraced limb in the unilateral brace condition at both speeds (p = 0.002). Findings indicate that walking with unilateral ankle foot orthoses presents an increased risk of developing secondary conditions.

ISBN: 9798460480913Subjects--Topical Terms:

548685
Biomechanics.
Subjects--Index Terms:

Biomechanics

Gait Changes Associated with the Reduced Push-Off from Solid Ankle Foot Orthoses.
LDR:04271nmm a2200373 4500 001 2351946
005 20221111113720.5
008 241004s2021 ||||||||||||||||| ||eng d
020 $a 9798460480913
035 $a (MiAaPQ)AAI28770908
035 $a AAI28770908
040 $a MiAaPQ $c MiAaPQ
100 1 $a Tanor, Joshua. $3 3691545
245 1 0 $a Gait Changes Associated with the Reduced Push-Off from Solid Ankle Foot Orthoses.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 84 p.
500 $a Source: Dissertations Abstracts International, Volume: 83-05, Section: B.
500 $a Advisor: Lewis, Cara L.
502 $a Thesis (Ph.D.)--Boston University, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a Ankle foot orthoses (AFOs) are used to improve walking in some lower extremity conditions but AFOs restrict ankle motion resulting in a trade-off in ankle and hip mechanics. While the use of AFOs have been well documented, there still remain gaps in the literature. The first study compared the differences in sagittal plane ankle and hip kinematics and kinetics across three conditions at two speeds in healthy individuals while the second study compared frontal plane kinetics at the hip and knee and vertical ground reaction forces between two conditions at two speeds in healthy individuals.This was studied by collecting and analyzing three-dimensional joint kinematics and ground reaction forces from twelve healthy adults. Participants walked in three conditions (shod; i.e. athletic shoes only and two reduced push-off conditions using solid ankle foot orthoses (SAFOs); i.e. unilateral brace and bilateral brace conditions) and at two speeds (1.25 m/s and 1.5 m/s). In the first study, generalized linear models with general estimating equations were used to compare ankle and hip angles, moments and power for the braced and unbraced sides separately in all three conditions. In the second study, frontal plane kinetics and vertical ground reaction forces in the unbraced limb in the unilateral brace condition were compared to the same side during shod walking using paired sample t-tests.From our first study we found that the reduced push-off from the use of SAFOs results in decreased peak plantarflexion angles and power generation at the ankle and increased peak flexion angles, and first and second peak power generation at the hip in the braced limbs in both unilateral (p ≤ 0.05) and bilateral (p ≤ 0.05) brace conditions at both speeds. On the unbraced side in the unilateral brace condition, there were decreased peak power generation at the ankle at 1.25 m/s and increased peak extension moments, first and second peak power generation at the hip compared to the shod condition (p < 0.05) at both speeds.In the comparison between the unilateral and bilateral brace conditions, the changes in ankle and hip mechanics were similar to the changes between the shod condition and the bilateral brace condition on the unbraced side; in addition, participants also had higher peak extension moments in the unilateral brace condition compared to the bilateral brace condition (p < 0.05). On the braced side, participants had lower peak plantarflexion moments at the ankle and lower peak flexion angles at the hip when walking with bilateral SAFOs, compared to walking with unilateral SAFOs (p < 0.05).In the second study, we found that peak internal knee and hip abduction moments were 3% and 4% higher, respectively, in the unbraced limb in the unilateral brace condition at 1.25 m/s (p ≤ 0.041) compared to the same side in the shod condition. Peak vertical ground reaction force was 3% higher in the unbraced limb in the unilateral brace condition at both speeds (p = 0.002). Findings indicate that walking with unilateral ankle foot orthoses presents an increased risk of developing secondary conditions.
590 $a School code: 0017.
650 4 $a Biomechanics. $3 548685
650 4 $a Kinesiology. $3 517627
653 $a Biomechanics
653 $a Gait
653 $a Kinematics
653 $a Kinetics
653 $a Push-off
653 $a Solid ankle foot orthoses
690 $a 0648
690 $a 0575
710 2 $a Boston University. $b Sargent College of Health and Rehabilitation Sciences SAR. $3 3278547
773 0 $t Dissertations Abstracts International $g 83-05B.
790 $a 0017
791 $a Ph.D.
792 $a 2021
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28770908