Sports Biomechanics Analysis Of Cerebral Palsy Teenagers Across Obstacles

The rapid development of science and technology in our lives has solved many problems,lift cerebral palsy, is still a very serious topic, because from the beginning to the affectedpregnancy and infancy developmental defects caused by non-progressive brain damage,mainly as abnormal posture and movement disorders, often associated with mentalretardation, sensory perception disorder, epilepsy, communication disorders, behavioralabnormalities, many people can not meet the basic living skills, adolescents with cerebralpalsy therefore take appropriate rehabilitation and treatment is essential that any a personneeds to walk, refers to a person’s gait during walking, abnormal gait adolescents withcerebral palsy, the most common, the most direct impact on the quality of daily life, in orderto make them as close to a normal life, social community has done a lot of research, with theprogress of society, people with cerebral palsy gait studies to become a research hotspot,cerebral palsy causes the disease itself apart from the crowd, the external environment factorscan also cause them some of the accidental injury, such as uneven or slippery ground, slope,height obstructions, poor lighting and light experience some other emergency situations cancause falls resulting in injury, need to get over obstacles in daily life is the most common case,but access to relevant information found that people with cerebral palsy during walkingobstacle situation, very little research in this area now, everyone’s gait varies due to itsstructure and function, motion control system, individual behavior and mental activity aredifferent, but the same sex, age, height and weight similar situation is very similar to thehuman body, the normal gait parameters of the movement is also very close, which makes thenormal gait curves of different people tend to consistently, that can be people with cerebralpalsy and normal gait comparison, as well as normal road conditions encountered obstaclesgait and gait comparison, and as a basis for diagnosis is abnormal, which is a lot ofexperiments have been abroad use.This study attempts to analyze adolescents with cerebral palsy across two differentheights gait changes, to study their behavior across different obstacles way to provide areference, hoping to find a suitable young people with cerebral palsy rehabilitation ofphysical exercise methods to make when they are able to smooth over the obstacle, themaximum possible reduction in fall risk of injury, improve physical coordination and athletic ability. Based on the secondary school’s eight teenagers with cerebral palsy across twodifferent heights gait experiments, in which various aspects of the lower limbs and pelvispaste15signs point to track the movement of various aspects of the subjects, often using foursets speed camera body taken from different angles during walking experiments, usingplantar pressure plate capture a complete gait cycle foot-ground contact force data,respectively, during walking on two highly obstacle crossing, the completion of each dozensof studies object data measurements, using SIMI motion analysis software for the capturedvideo for RBI analysis, two highly drawn across the body when needed space motion of eachflag point coordinates and available for analysis data.By combining the camera system, EMG and plantar pressure test system acquisitionadolescents with cerebral palsy walk plains of the lower extremity biomechanics indicatorsobserved when walking plantar pressure at different phases of the case, the use of inversedynamics method to calculate the lower extremity joint joint torque, to analyze the presenceof abnormal gait mechanism, through analysis and comparison found that adolescents withcerebral palsy across obstacles abnormal gait, across two different heights, the support legsand swinging his legs as altitude increases hip, knee and ankle joint angles are changed, inorder to successfully cross the obstacles that they had to adjust posture, step length and bychanging the angle of the lower extremity joints and other methods to keep the body stableacross. Plantar pressure distribution curve through the study found that adolescents withcerebral palsy does not appear typical bimodal curve, mainly because of the central nervoussystem can not control the swing leg good control body balance in the swing phase, whichcan not maintain the supporting leg from the heel to the body a ground coordination, inaddition to the serious foot disorders, most young people with cerebral palsy are scissorssteps and foot drop, heel does not touch the ground lead to the focus falls on the toes, so noone from the heel to the toe of normal peak process. Through inverse dynamics methods foreach joint torques calculated that adolescents with cerebral palsy across obstacles swingingleg swing is mainly coordination between lower extremity joints through flexion andextension movements to complete the obstacle height increases determines the swing leg ateach joint flexion, adduction and internal exhibition outside, spin the outer aspects of internalrotation trajectory changed a lot of balance and limb movement have a decisive role. EMGanalysis by the method concludes, MF, MPF with increasing height over the muscles between the different muscle groups are showing higher and lower frequency changes, but the body ofa subject between the light and heavy patients affected side differ, AEMG and SPA reflectthe size of the muscles acting through eight of the subjects left leg muscles analysis, juvenilecerebral palsy causes abnormal gait is not normal for a sustained muscle contraction actingmuscle size instability leads to lower limb muscles with uncoordinated, resulting in abnormalgait.