Pre-swing deficits in forward propulsion, swing initiation and power generation by individual muscles during hemiparetic walking
نویسندگان
چکیده
منابع مشابه
Pre-swing deficits in forward propulsion, swing initiation and power generation by individual muscles during hemiparetic walking.
Clinical studies of hemiparetic walking have shown pre-swing abnormalities in the paretic leg suggesting that paretic muscle contributions to important biomechanical walking subtasks are different than those of non-disabled individuals. Three-dimensional forward dynamics simulations of two representative hemiparetic subjects with different levels of walking function classified by self-selected ...
متن کاملMuscle work is increased in pre-swing during hemiparetic walking.
BACKGROUND Muscle mechanical work is likely affected by gait abnormalities in hemiparetic walking during the paretic pre-swing phase (i.e., double support phase preceding paretic toe-off). Previous experimental studies suggest that muscle work may be decreased in the paretic leg, but paretic work may have been underestimated since experimental approaches based on net joint moments do not accoun...
متن کاملRelationships between muscle contributions to walking subtasks and functional walking status in persons with post-stroke hemiparesis.
BACKGROUND Persons with post-stroke hemiparesis usually walk slowly and asymmetrically. Stroke severity and functional walking status are commonly predicted by post-stroke walking speed. The mechanisms that limit walking speed, and by extension functional walking status, need to be understood to improve post-stroke rehabilitation methods. METHODS Three-dimensional forward dynamics walking sim...
متن کاملContributions of the individual ankle plantar flexors to support, forward progression and swing initiation during walking.
Walking is a motor task requiring coordination of many muscles. Previous biomechanical studies, based primarily on analyses of the net ankle moment during stance, have concluded different functional roles for the plantar flexors. We hypothesize that some of the disparities in interpretation arise because of the effects of the uniarticular and biarticular muscles that comprise the plantar flexor...
متن کاملRole of biarticular muscles during the swing phase of walking
Template models can help to demonstrate and prove concepts on human locomotion such as the spring-mass model [1]. Since biarticular muscles may have specific tasks in walking [2], their action during the swing phase is investigated in this study. A new model is presented to describe the swing leg motion (Fig .1). The goal is to identify the role of elastic biarticular muscles on swing leg dynam...
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ژورنال
عنوان ژورنال: Journal of Biomechanics
سال: 2010
ISSN: 0021-9290
DOI: 10.1016/j.jbiomech.2010.04.027