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Patterned electromyographic activity in the sit-to-stand movement.
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Patterned electromyographic activity in the sit-to-stand movement.

作者: FR Goulart 有關機構: Departament de Medecina, Universitat de Barcelona, IDIBAPS, Hospital Clínic, Villarroel, Spain.; J Valls-Solé
版本/格式: 文章 文章 : 英語
刊登於:Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 1999 Sep; 110(9): 1634-40
資料庫:取自MEDLINE®/PubMed®,這是美國醫學圖書館的一個資料庫。
其他資料庫: British Library Serials
提要:
OBJECTIVES: Postural activity is an essential part of any voluntary movement. In movements involving all body parts such as in the sit-to-stand maneuver (STS), postural activity becomes intermingled with the activity required to perform the actual movement, and is usually difficult to recognize. METHODS: In this paper, we have analyzed the electromyographic activity of muscles of the leg, thigh, trunk and neck in 20  再讀一些...
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文件類型: 文章
所有的作者/貢獻者: FR Goulart 有關機構: Departament de Medecina, Universitat de Barcelona, IDIBAPS, Hospital Clínic, Villarroel, Spain.; J Valls-Solé
ISSN:1388-2457
語言註釋: English
專有的識別號: 121782685
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摘要:

OBJECTIVES: Postural activity is an essential part of any voluntary movement. In movements involving all body parts such as in the sit-to-stand maneuver (STS), postural activity becomes intermingled with the activity required to perform the actual movement, and is usually difficult to recognize. METHODS: In this paper, we have analyzed the electromyographic activity of muscles of the leg, thigh, trunk and neck in 20 healthy volunteers who performed the STS maneuver. In order to identify the postural and the executional EMG activity, subjects were requested to perform the movement according to 6 predefined experimental conditions. Our hypothesis was that changing the conditions or the strategies of the movement would modify the postural activity, without significantly altering the EMG pattern required for performing the movement itself. RESULTS: Tibialis anterior (TA), abdominal (ABD) and sternocleidomastoid (SCM) were the muscles activated first in the most natural condition for the movement (reference), but their activity and that of the trapezius (TRA) was suppressed or greatly diminished in other conditions. Conversely, lumbar paraspinal (LPS), quadriceps (QUA), and hamstrings (HMS) were activated in a patterned sequence that was invariable in all conditions, and time locked to the moment of take-off from the seat. The soleus (SOL) was the last muscle activated and, together with QUA and HMS, remained active during standing. CONCLUSIONS: We conclude that TA, SOL, ABD, SCM and TRA are involved in preparatory and accompanying postural movements, while LPS, QUA, and HMS are activated in a consistent patterned sequence and can be considered the executional muscles for the STS movement. Recognition of the role of each muscle in the STS movement can contribute to a better understanding of the movement deficits of certain patients, and help to devise adaptive motor strategies in neurorehabilitation.

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Primary Entity

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    schema:description "METHODS: In this paper, we have analyzed the electromyographic activity of muscles of the leg, thigh, trunk and neck in 20 healthy volunteers who performed the STS maneuver. In order to identify the postural and the executional EMG activity, subjects were requested to perform the movement according to 6 predefined experimental conditions. Our hypothesis was that changing the conditions or the strategies of the movement would modify the postural activity, without significantly altering the EMG pattern required for performing the movement itself." ;
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    schema:description "CONCLUSIONS: We conclude that TA, SOL, ABD, SCM and TRA are involved in preparatory and accompanying postural movements, while LPS, QUA, and HMS are activated in a consistent patterned sequence and can be considered the executional muscles for the STS movement. Recognition of the role of each muscle in the STS movement can contribute to a better understanding of the movement deficits of certain patients, and help to devise adaptive motor strategies in neurorehabilitation." ;
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Related Entities

<http://experiment.worldcat.org/entity/work/data/101081532#Topic/electromyography> # Electromyography
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    schema:name "Electromyography" ;
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