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

Understanding the Effects of Wearing a Quantitatively Prescribed Passive-Dynamic Ankle-Foot Orthosis on the Mechanical Cost-of-Transport and Gait Velocity in Individuals Post-stroke.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Understanding the Effects of Wearing a Quantitatively Prescribed Passive-Dynamic Ankle-Foot Orthosis on the Mechanical Cost-of-Transport and Gait Velocity in Individuals Post-stroke./
作者:	Koller, Corey A.
面頁冊數:	1 online resource (136 pages)
附註:	Source: Dissertations Abstracts International, Volume: 83-09, Section: B.
Contained By:	Dissertations Abstracts International83-09B.
標題:	Biomechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28964868click for full text (PQDT)
ISBN:	9798209891659

Understanding the Effects of Wearing a Quantitatively Prescribed Passive-Dynamic Ankle-Foot Orthosis on the Mechanical Cost-of-Transport and Gait Velocity in Individuals Post-stroke.
Koller, Corey A.

Understanding the Effects of Wearing a Quantitatively Prescribed Passive-Dynamic Ankle-Foot Orthosis on the Mechanical Cost-of-Transport and Gait Velocity in Individuals Post-stroke. - 1 online resource (136 pages)

Source: Dissertations Abstracts International, Volume: 83-09, Section: B.

Thesis (Ph.D.)--University of Delaware, 2022.

Includes bibliographical references

Individuals post-stroke are commonly prescribed passive-dynamic ankle-foot orthoses (PD-AFOs) to aid in the control of shank forward rotation during mid-to- terminal stance due to plantar flexor weakness. PD-AFO bending stiffness is a key orthotic characteristic that can assist the plantar flexor muscles by providing the resistance needed to control shank forward rotation. Controlling shank forward rotation can store and return mechanical energy that can potentially increase gait velocity and decrease total mechanical cost-of-transport (COT). We developed a prescription model that can quantitatively prescribe PD-AFO bending stiffness based on an individual's level of plantar flexor function deficit. The overall purpose of this dissertation was to quantify and compare post-stroke COT and gait velocity along with underlying joint-level mechanisms through a range of conditions over time while the participant wears their quantitatively prescribed PD-AFO and examine the relationships between COT and common clinical assessments. Ten individuals with chronic stroke (> six months post-stroke) participated and underwent five visits. A clinical evaluation and the data needed to prescribe and manufacture the PD-AFOs were captured at the first visit. The PD-AFOs were manufactured in carbon fiber material and then fitted to the participants. Data was collected as the participants walked on an instrumented treadmill while wearing the PD-AFO and then returned two weeks and four weeks later to complete the same analyses. Simulation modeling analysis was conducted to statistically test Aims 1-3. Results showed that the quantitatively prescribed PD-AFOs significantly decreased total mechanical COT and increased gait velocity, by at least one MDC, compared to not wearing an orthosis. When comparing wearing the PD-AFO to wearing the SOC AFO, seven out of the nine participants significantly decreased total mechanical COT and although all participants increased gait velocity, only two increased by at least one MDC. Despite these improvements, inconsistent results were seen in the joint-level parameters across the three orthoses conditions. While wearing the PD-AFO across a range of gait velocities, changes in total mechanical COT were seen. While wearing the PD-AFO over time, minimal to no changes were seen in the global and joint-level parameters. Lastly, three of the clinical assessments (Fugl-Meyer assessment, dorsiflexion ROM with the knee flexed to 90°, and gait velocity) showed potential relationships to changes in total mechanical COT magnitudes while wearing the PD-AFO. In general, these results improved our understanding of how quantitatively prescribing PD-AFO bending stiffness effected gait biomechanics and energetics over a range of conditions.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798209891659Subjects--Topical Terms:

548685
Biomechanics.
Subjects--Index Terms:

Passive-dynamic ankle-foot orthosesIndex Terms--Genre/Form:

542853
Electronic books.

Understanding the Effects of Wearing a Quantitatively Prescribed Passive-Dynamic Ankle-Foot Orthosis on the Mechanical Cost-of-Transport and Gait Velocity in Individuals Post-stroke.
LDR:04107nmm a2200325K 4500 001 2361470
005 20231019095628.5
006 m o d
007 cr mn ---uuuuu
008 241011s2022 xx obm 000 0 eng d
020 $a 9798209891659
035 $a (MiAaPQ)AAI28964868
035 $a AAI28964868
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Koller, Corey A. $3 3702144
245 1 0 $a Understanding the Effects of Wearing a Quantitatively Prescribed Passive-Dynamic Ankle-Foot Orthosis on the Mechanical Cost-of-Transport and Gait Velocity in Individuals Post-stroke.
264 0 $c 2022
300 $a 1 online resource (136 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Dissertations Abstracts International, Volume: 83-09, Section: B.
500 $a Advisor: Arch, Elisa.
502 $a Thesis (Ph.D.)--University of Delaware, 2022.
504 $a Includes bibliographical references
520 $a Individuals post-stroke are commonly prescribed passive-dynamic ankle-foot orthoses (PD-AFOs) to aid in the control of shank forward rotation during mid-to- terminal stance due to plantar flexor weakness. PD-AFO bending stiffness is a key orthotic characteristic that can assist the plantar flexor muscles by providing the resistance needed to control shank forward rotation. Controlling shank forward rotation can store and return mechanical energy that can potentially increase gait velocity and decrease total mechanical cost-of-transport (COT). We developed a prescription model that can quantitatively prescribe PD-AFO bending stiffness based on an individual's level of plantar flexor function deficit. The overall purpose of this dissertation was to quantify and compare post-stroke COT and gait velocity along with underlying joint-level mechanisms through a range of conditions over time while the participant wears their quantitatively prescribed PD-AFO and examine the relationships between COT and common clinical assessments. Ten individuals with chronic stroke (> six months post-stroke) participated and underwent five visits. A clinical evaluation and the data needed to prescribe and manufacture the PD-AFOs were captured at the first visit. The PD-AFOs were manufactured in carbon fiber material and then fitted to the participants. Data was collected as the participants walked on an instrumented treadmill while wearing the PD-AFO and then returned two weeks and four weeks later to complete the same analyses. Simulation modeling analysis was conducted to statistically test Aims 1-3. Results showed that the quantitatively prescribed PD-AFOs significantly decreased total mechanical COT and increased gait velocity, by at least one MDC, compared to not wearing an orthosis. When comparing wearing the PD-AFO to wearing the SOC AFO, seven out of the nine participants significantly decreased total mechanical COT and although all participants increased gait velocity, only two increased by at least one MDC. Despite these improvements, inconsistent results were seen in the joint-level parameters across the three orthoses conditions. While wearing the PD-AFO across a range of gait velocities, changes in total mechanical COT were seen. While wearing the PD-AFO over time, minimal to no changes were seen in the global and joint-level parameters. Lastly, three of the clinical assessments (Fugl-Meyer assessment, dorsiflexion ROM with the knee flexed to 90°, and gait velocity) showed potential relationships to changes in total mechanical COT magnitudes while wearing the PD-AFO. In general, these results improved our understanding of how quantitatively prescribing PD-AFO bending stiffness effected gait biomechanics and energetics over a range of conditions.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
650 4 $a Biomechanics. $3 548685
653 $a Passive-dynamic ankle-foot orthoses
655 7 $a Electronic books. $2 lcsh $3 542853
690 $a 0648
710 2 $a ProQuest Information and Learning Co. $3 783688
710 2 $a University of Delaware. $b Biomechanics and Movement Science. $3 1043243
773 0 $t Dissertations Abstracts International $g 83-09B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28964868 $z click for full text (PQDT)