introduction: ski is a fast sport with a high risk of falling. the purpose of this study is to investigate the relationship of core strength with static and dynamic balance in snowboarders. materials and methods: forty male athletes participated in this study with a history activity of at least 6 seasons in snowboard skiing sport (mean age 26.85±3.30yr, height 180.45±6.08cm, weight 79.86±6.14kg...

among the deformities of the spine in sagittal plane, kyphosis is one of the most important cases in the study of postural control from the mechanical standpoint because the smallest deviation of upper limb, that is almost 60 percent of total body weight in standing position, causes displacement of body center of mass to forward and finally will causes weaker balance performance in kyphotic ind...

introduction: attention deficit / hyperactivity disorder (adhd) is a persistent pattern of inattention and/or hyperactivity - impulsivity behavior. adhd is frequently accompanied by developmental coordination disorder (dcd). motor coordination is a complex performance of interaction between visual perceptual, neuromuscular coordination, memory, attention and balance. one of the most important p...

attention is one of the effective factors when learning and performing motor skills. focus of attention is a method to increase the efficiency and learning. previous studies have shown that focus of attention plays an important role in learning and performing motor skills. the purpose of the present study was to compare the effect of the instruction of far and near external focus of attention o...

conclusions it seems that plantar changes have insignificant effect on static and dynamic indices evaluated by the biodex balance system. objectives the current study aimed to evaluate the relation between these structural characteristics and balance indices. patients and methods the study population was 100 male and female students from semnan university of medical sciences, semnan, iran. to e...

the aim of this study was to determine the effects of external attention (ea) and internal attention (ia) with & without motivational music training on dynamic balance task. the method was quasi-experimental and the sample involved 60 athletic maile who were volunteers to participate in this study. after pre-test, subjects were divided into 5 groups of 12 members randomly. groups were: ia with ...

planning robot trajectory is a complex task that plays a significant role in design and application of robots in task space. the problem is formulated as a trajectory optimization problem which is fundamentally a constrained nonlinear optimization problem. open-loop optimal control method is proposed as an approach for trajectory optimization of cable parallel manipulator for a given two-end-po...