Asymmetry of Anticipatory Postural Adjustment During Gait Initiation
نویسندگان
چکیده
منابع مشابه
Asymmetry of Anticipatory Postural Adjustment During Gait Initiation
The purpose of this study was to investigate the asymmetry of anticipatory postural adjustment (APA) during gait initiation and to determine whether the process of choosing the initial swing leg affects APA during gait initiation. The participants initiated gait with the leg indicated by a start tone or initiated gait with the leg spontaneously chosen. The dependent variables of APA were not si...
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BACKGROUND Anticipatory postural adjustments during gait initiation have an important role in postural stability but also in gait performance. However, these first phase mechanisms of gait initiation have received little attention, particularly in subcortical post-stroke subjects, where bilateral postural control pathways can be impaired. This study aims to evaluate ankle anticipatory postural ...
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The initiation of human walking involves postural motor actions for body orientation and balance stabilization that must be effectively integrated with locomotion to allow safe and efficient transport. Our ability to coordinately adapt these functions to environmental or bodily changes through error-based motor learning is essential to effective performance. Predictive compensations for postura...
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The ability to step quickly in response to a perturbation has been shown to be critical for prevention of falls. The cognitive processing, weight shifting, and locomotion must be well timed to execute a successful step. The purpose of this study was to compare the response preparation and response execution processes between a simple (SRST) and a choice reaction stepping task (CRST). Nine healt...
متن کاملAnticipatory Postural Adjustments in Gait Initiation from Different Initial Stance Width
由靜立起步至動態步行(GI)之準備時期,會產生足底壓力中心(COP)往後及往擺盪腳移動,與身體質量中心(COM)往站立 腳移動之預期性姿勢調控(APA)機制。本研究目的在於探討此機制會不會受到不同起步步寬改變。本研究以健康正常人 為研究對象,受試者執行五種步寬下之起步。使用三維動作分析及 AMTI 測力板,以逆向動力學求得 1.COP 往後及往擺 盪腳之位移,2.在額狀面及矢狀面兩平面上相對於站立腳的 COP,由擺盪腳推蹬力所造成的淨彎矩,3. 在前後方向上的 COM 速度,作為 APA 參數。比較不同步寬對起步瞬間 APA 參數的影響,來探討人體由靜立起步至動態步行的控制策 略。結果顯示 COP 之位移以及推蹬力的淨彎矩,都會隨著步寬增加而變大,然而 COM 速度在最大步寬時顯著變小。在 最小步寬時,COP 往後及往擺盪腳沒有位移量,間接推翻擺盪腳藉牽張反射於起步的必要性。在中等步...
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ژورنال
عنوان ژورنال: Journal of Human Kinetics
سال: 2014
ISSN: 1899-7562
DOI: 10.2478/hukin-2014-0056