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Quantitative electromyographic analy...

Hwang, Ing-Shiou.

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Quantitative electromyographic analysis of synergy in neuromuscular control.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Quantitative electromyographic analysis of synergy in neuromuscular control./
Author:	Hwang, Ing-Shiou.
Description:	229 p.
Notes:	Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3396.
Contained By:	Dissertation Abstracts International60-07B.
Subject:	Biophysics, General. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9937046
ISBN:	0599383607

Quantitative electromyographic analysis of synergy in neuromuscular control.
Hwang, Ing-Shiou.

Quantitative electromyographic analysis of synergy in neuromuscular control. - 229 p.

Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3396.

Thesis (Ph.D.)--The University of Texas at Austin, 1998.

Ankle-knee neuromuscular synergy is an important functional element with respect to treatment, evaluation, and understanding of lower extremity performance. To investigate this specific synergy pattern, quantitative EMG approaches in two individual studies were employed for characterizing explicit or implicit neuromuscular synergy in the ankle-knee complex.

ISBN: 0599383607Subjects--Topical Terms:

1019105
Biophysics, General.

Quantitative electromyographic analysis of synergy in neuromuscular control.
LDR:03216nam 2200325 a 45 001 931510
005 20110429
008 110429s1998 eng d
020 $a 0599383607
035 $a (UnM)AAI9937046
035 $a AAI9937046
040 $a UnM $c UnM
100 1 $a Hwang, Ing-Shiou. $3 1255052
245 1 0 $a Quantitative electromyographic analysis of synergy in neuromuscular control.
300 $a 229 p.
500 $a Source: Dissertation Abstracts International, Volume: 60-07, Section: B, page: 3396.
500 $a Supervisor: Lawrence D. Abraham.
502 $a Thesis (Ph.D.)--The University of Texas at Austin, 1998.
520 $a Ankle-knee neuromuscular synergy is an important functional element with respect to treatment, evaluation, and understanding of lower extremity performance. To investigate this specific synergy pattern, quantitative EMG approaches in two individual studies were employed for characterizing explicit or implicit neuromuscular synergy in the ankle-knee complex.
520 $a In the first study, isokinetic ankle contractions, both dorsiflexion and plantarflexion, at four different speeds (30°/sec, 60°/sec, 120°/sec, and 240°/sec) were studied in a normal population (N = 11) to assess synergistic coactivation of the prime overs (tibialis anterior and gastrocnemius) and irradiated muscles (ipsilateral/contralateral rectus femoris and biceps femoris) of the ankle-knee complex. Electromyographic signals were collected with surface EMG electrodes, following traditional time-amplitude and advanced time-frequency analyses to address temporal features of the neural control strategies of the activated muscles. The data suggest that (1) Motor irradiation of the knee muscles due to ankle isokinetic contraction was strongly directionally dependent. (2) Motor irradiation of the ipsilateral knee muscles due to ankle isokinetic contraction was speed dependent. (3) The prime movers demonstrated a similar control strategy, irrespective of different contraction speeds. (4) The control strategies of the irradiated muscle varied across trials and were not likely the same as those of the prime movers.
520 $a The second study was an experiment designed to test ankle-knee interaction leading to a subthreshold change of the vastus medialis motor pool excitability. Motor pool excitability of the vastus medialis of healthy population (N = 10) was estimated using the vastus medialis H reflex during ankle isometric contraction conditioned by different ankle positions (dorsiflexion, neutral, and plantarflexion) without/with voluntary effort (50% MVC). Repeated measures ANOVA was performed on the mean and standard deviation of the H amplitude under the conditions of different positions and efforts. The data suggest that ankle effort, but not ankle position, significantly affected the vastus medialis motor pool excitability.
590 $a School code: 0227.
650 4 $a Biophysics, General. $3 1019105
650 4 $a Engineering, Biomedical. $3 1017684
650 4 $a Health Sciences, Recreation. $3 1018003
650 4 $a Health Sciences, Rehabilitation and Therapy. $3 1017926
690 $a 0382
690 $a 0541
690 $a 0575
690 $a 0786
710 2 0 $a The University of Texas at Austin. $3 718984
773 0 $t Dissertation Abstracts International $g 60-07B.
790 $a 0227
790 1 0 $a Abraham, Lawrence D., $e advisor
791 $a Ph.D.
792 $a 1998
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9937046