Effect of Direction and Step Length on Anticipatory Postural Adjustments in Stepping
نویسندگان
چکیده
منابع مشابه
Preparation of anticipatory postural adjustments prior to stepping.
Step initiation involves anticipatory postural adjustments (APAs) that propel the body mass forward and laterally before the first step. This study used a startle-like acoustic stimulus (SAS) and transcranial magnetic stimulation (TMS) to examine the preparation of APAs before forward stepping. After an instructed delay period, subjects initiated forward steps in reaction to a visual "go" cue. ...
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We used the framework of the uncontrolled manifold hypothesis to explore the relations between anticipatory synergy adjustments (ASAs) and anticipatory postural adjustments (APAs) during feedforward control of vertical posture. ASAs represent a drop in the index of a multimuscle-mode synergy stabilizing the coordinate of the center of pressure in preparation to an action. ASAs reflect early cha...
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The aim of this study was to explore the effects of accuracy constraints on the characteristics of anticipatory postural adjustments (APA) in a task that involves a movement consisting of a controlled phase and a ballistic phase. It was hypothesized that APA scaling with task parameters (target size) would be preserved even when the task is performed by muscles that have no direct effects on AP...
متن کاملAnticipatory postural adjustments in conditions of postural instability.
OBJECTIVES The purpose of this study was to investigate anticipatory postural adjustments (APAs) in standing subjects who performed a standard motor action triggering a standard postural perturbation (releasing a 2.2 kg load from extended arms) in conditions of different stability requirements. METHODS The degree of stability was varied either by balancing on special boards with long and narr...
متن کاملThe Effect of an 8-week Exercise Program Focused on Anticipatory Postural Adjustments on Postural Control and Motor Function in the Elderly
Objectives: Improving balance and motor function in the elderly for preventing falling and its irreparable consequences has attracted the attention of many researchers in the field of aging. The purpose of the present is to investigate the effect of an exercise program based on Anticipatory Postural Adjustments (APAs) on postural control and motor function of the elderly. Methods & Materials: ...
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ژورنال
عنوان ژورنال: Rigakuryoho Kagaku
سال: 2015
ISSN: 1341-1667
DOI: 10.1589/rika.30.993