Chinese Elite Women Race Walkers Feature Modeling And Analysis Of Energy Consumption Lower Limbs

Project is Endurance race walking, race rationality technology has an important impacton physical fitness of the walker, walking the relationship between action research ontechnology and energy foot race results have important significance. Race walking withnearly150years of history, and the woman race walking after80years of development, theskill level of the world in a bottleneck stage at present, in order to break the routine, racewalking to find newer technology, this study uses high-speed cameras and image analysismethod Race Athlete lower limbs study, based on monocular video reduce the impact on theathletes themselves, The real reaction the race walking action technical conditions for individualresearch. On foot race video analysis, a technique derived parameters of lower extremitysports athletes in the game period, by analyzing the relationship between athletes modelingenergy consumption and technical parameters of the lower limbs, race walking athletes toimprove energy efficiency, for the individual athlete’s own conditions and walking technology,tailored, step length, step frequency, joint angle innovative ideas walking technical trainingto improve race walking techniques and Improve the efficiency of the and normative. Formaterial selection and walking movements and rhythmic force correspondingrecommendations are given to improve race walking performance.In this paper,2011IAAF Race Walking Challenge in Taicang woman,45Walkersvideo game for the object, using the three-dimensional motion analysis software (APAS)technical parameters for video parsing draw45athletes (a part of the joint angles, centroidvelocity) establish lower limb walking model, combined with Chinese young female bodybasic parameters to be vacated foot race lap time for each entry point to analyze changes inthe angle of the ankle, knee, thigh and all aspects of the two centroid speed, technicalparameters and results relations lower extremity energy; by analyzing the results thefollowing conclusions:1.Step length and lower extremity kinetic energy is proportional relationship, soar thegreater the longer the step. 2.Ankle angle changes in walking speed is a key technology, ankle angle and velocitycentroid have similar trends, changes in the angle of the ankle directly affects the energyconsumption of walking athletes.3.Left knee almost the same trajectory, when the knee joints at the same height, walkingathletes is vacated state; changing the angle of the knee and ankle joints are similar.4.Throughout the walking cycle, the maximum angle between the two legs of69.3degrees,the angle between the thigh affect step length, step time was not the greatest moment ofmaximum angle between the two thighs; When thighs parallel time around (both thigh angleis zero time), in the walking process when the two thigh angle athlete is zero, the left lowerleg centroid speed and foot centroid speed is very close to, but less than the thigh centroidspeed; while the right leg, thigh centroid faster than calves centroid speed, faster than theleg foot centroid centroid speed.