Plantar Pressure-based Men’s Hurdler Hurdle Step Biomechanical Characteristics

Hurdle race is a sport combines running and hurdling，It is a unsymmetrical periodicitymovement that has fixed structures，the main technical is the convert between running andhurdling. The hurdler must clear a series of ten barriers with unnatural strides, This unnaturalstrides is called “hurdle step” in hurdle race technique.Hurdle Step process is generallydivided into inter-attack bar, bar integral part of the action, the next column of the action, andseveral other.Hurdle Step technology is based on the action from the cross-angle, distance,speed and strength of four factors。the technique of hurdle race could affect result.There are not many research、 articles and documentation about planter foot pressure forhurdle race.most of them are focus on the progress of hurdle race，from the kinematic pointaction，there are less experiment cases.Truck shooting for hurdle race required highconditions， this research is combined with2D image analytical and planter foot pressure ofhurdle race， Analyzing the track of foot pressure between starting line and first hurdle.Researching and analyzing the movement and foot pressure for a hurdler and find out theeffective of different techniques. Explore the mechanism of the sport enough force in theaction stage for training, competition and avoid sports injuries, and future research in this areato provide the theoretical basis of the theoretical basis and quantitative data. Therefore, theresults of this study is not only a breakthrough in the research means, but also has certainforward-looking significance.Conclusions of this study are as follows:(1) Relatively strong awareness of the attacking column hurdler, from the inter-attack barfaster speed amplitude variations from the cross-angle is too large, body weight fluctuate.Under the column distance, did not form a smooth running rail technology.(2) Hurdle from the center of pressure trajectory across the first column of the foot outside ofthe heel to the foot Central out after an inflection point move up into∫type. Enoughdifferences about the next column process, showing the typical attack bar enough forefootsupport, swing leg foot central lateral rapid transition to the inside of the forefoot kicking offthe ground, two feet forward together to the direction.(3)"Hurdle Step" the second phase of the vacant bar a longer length of time T2average around420ms±15ms, has a direct relationship with the distance distribution of the variousstages of the Hurdle Step.(4) From the cross-attack column, attack column leg (left foot) foot maximum peak pressureparts in the forefoot metatarsal at other regions of the peak distribution of the sequence of3of the first metatarsal metatarsal> phalanx> medial heel> lateral>4metatarsal> fifthmetatarsal. Right foot swing leg maximum pressure peak at the inside of the forefootmetatarsal joint head.(5) On column step and column step foot impulse parts metatarsal2, does not easily lead tofoot varus trend, easily lead to the foot transverse arch collapse.(6) Hurdle attack bar full end of the pressure value is higher than the swing leg, the force isconcentrated in the hands of the Ministry of the second metatarsal area to withstand themaximum pressure in the foot before the fifth metatarsal area and heel area under the smallerforce.