國立虎尾科技大學 |

Neuromechanics of Walking and Slipping Using Muscle Synergy Analyses.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Neuromechanics of Walking and Slipping Using Muscle Synergy Analyses./
Author:	Nazifi, Mohammad Moein.
Description:	1 online resource (127 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 83-12, Section: B.
Contained By:	Dissertations Abstracts International83-12B.
Subject:	Biomedical engineering. -
Online resource:	click for full text (PQDT)
ISBN:	9798819359730

Neuromechanics of Walking and Slipping Using Muscle Synergy Analyses.
Nazifi, Mohammad Moein.

Neuromechanics of Walking and Slipping Using Muscle Synergy Analyses. - 1 online resource (127 pages)

Source: Dissertations Abstracts International, Volume: 83-12, Section: B.

Thesis (Ph.D.)--Texas A&M University, 2020.

Includes bibliographical references

Falls have numerous adverse effects on the economy and society. Slipping is the main contributor to falling. However, some individuals possess the ability to recover upon slipping while some do not. This dissertation studied the early indicators of falling in different individuals and compared them between mild slippers and severe slippers. The studied variables (sagittal angular moment (H), Center of Mass height, and the duration of single and double stance) all failed to show significant differences between the two severity groups before slip initiation, while the all differed after slip onset. H showed the earliest deviations among variables, indicating its importance in slip control. A muscle synergy (a united group of muscles that may act as a building block of the Central Nervous System in motor control) approach was chosen to study walking and slipping. Four synergies were identified for slipping, from which two were common between walking and slipping. Next, muscle synergies of slipping were compared for different severity groups. Severe slippers' slipping synergies differed from mild slippers', showing a probable difference in their motor control. Severe slippers were unable to replace their slipping limb as effectively. Upon finding post-slip differences, the walking behavior of mild and severe slippers were compared using muscle synergies. The walking muscle synergies also differed between mild and severe slippers, suggesting a difference in their gait control, causing their inclination to slip severely and fall. The results suggested severe slippers had a deficiency in decelerating their swing limb at the terminal swing phase of the gait and had higher dorsiflexion upon their heel strikes. Lastly, a muscle synergy approach was used to track the gait improvements of ADS patients upon surgical alignment. While their clinical gait variables showed improvements, they also required a higher number of synergies for walking, suggesting a more advanced gait control. Also, the entropy of muscle synergies were compared before and after surgery. Lower entropy is associated with more deterministic control. Upon the gait improvements, the entropy of the walking muscle synergies showed a significant decrease, proving it as a novel tool to track motor control enhancements in rehabilitation.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798819359730Subjects--Topical Terms:

588770
Biomedical engineering.
Subjects--Index Terms:

Motor controlIndex Terms--Genre/Form:

554714
Electronic books.

Neuromechanics of Walking and Slipping Using Muscle Synergy Analyses.
LDR:03717ntm a22004217 4500 001 1147393
005 20240918072757.5
006 m o d
007 cr bn ---uuuuu
008 250605s2020 xx obm 000 0 eng d
020 $a 9798819359730
035 $a (MiAaPQ)AAI29239115
035 $a (MiAaPQ)0803vireo24059Nazifi
035 $a AAI29239115
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Nazifi, Mohammad Moein. $3 1473116
245 1 0 $a Neuromechanics of Walking and Slipping Using Muscle Synergy Analyses.
264 0 $c 2020
300 $a 1 online resource (127 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: 83-12, Section: B.
500 $a Advisor: Hur, Pilwon.
502 $a Thesis (Ph.D.)--Texas A&M University, 2020.
504 $a Includes bibliographical references
520 $a Falls have numerous adverse effects on the economy and society. Slipping is the main contributor to falling. However, some individuals possess the ability to recover upon slipping while some do not. This dissertation studied the early indicators of falling in different individuals and compared them between mild slippers and severe slippers. The studied variables (sagittal angular moment (H), Center of Mass height, and the duration of single and double stance) all failed to show significant differences between the two severity groups before slip initiation, while the all differed after slip onset. H showed the earliest deviations among variables, indicating its importance in slip control. A muscle synergy (a united group of muscles that may act as a building block of the Central Nervous System in motor control) approach was chosen to study walking and slipping. Four synergies were identified for slipping, from which two were common between walking and slipping. Next, muscle synergies of slipping were compared for different severity groups. Severe slippers' slipping synergies differed from mild slippers', showing a probable difference in their motor control. Severe slippers were unable to replace their slipping limb as effectively. Upon finding post-slip differences, the walking behavior of mild and severe slippers were compared using muscle synergies. The walking muscle synergies also differed between mild and severe slippers, suggesting a difference in their gait control, causing their inclination to slip severely and fall. The results suggested severe slippers had a deficiency in decelerating their swing limb at the terminal swing phase of the gait and had higher dorsiflexion upon their heel strikes. Lastly, a muscle synergy approach was used to track the gait improvements of ADS patients upon surgical alignment. While their clinical gait variables showed improvements, they also required a higher number of synergies for walking, suggesting a more advanced gait control. Also, the entropy of muscle synergies were compared before and after surgery. Lower entropy is associated with more deterministic control. Upon the gait improvements, the entropy of the walking muscle synergies showed a significant decrease, proving it as a novel tool to track motor control enhancements in rehabilitation.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Biomedical engineering. $3 588770
650 4 $a Mechanical engineering. $3 557493
650 4 $a Physical therapy. $3 678370
650 4 $a Biomechanics. $3 565307
653 $a Motor control
653 $a Gait
653 $a Slip
653 $a Fall
653 $a Muscle synergies
655 7 $a Electronic books. $2 local $3 554714
690 $a 0548
690 $a 0541
690 $a 0382
690 $a 0648
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Texas A&M University. $b Mechanical Engineering. $3 1180218
773 0 $t Dissertations Abstracts International $g 83-12B.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29239115 $z click for full text (PQDT)