Effects Of Shoe Heel Height On The Biomechanical Characteristics Of Uphill Walking Gait

Objective:The purpose of this study was to compare the differences in the biomechanical characteristics of gait when walking on different grades of slopes with different sports shoes heel height and to determine whether there is an interaction effect between the heel height of the sports shoes and the grade of the slopes on the lower limb joints.And whether shoe heel height can help reduce the risk of lower extremity injury when walking uphill.Methods:Ten healthy male college students wore three different height heel shoes and walked on a set of load-bearing ramp devices(6 °,12 °,20 °)with each grade on each heel Three times the height of the test,the use of infrared high-speed motion capture system,three-dimensional force plate system,wireless surface myoelectric system on the uphill kinematics,kinetic parameters,electromyography parameters simultaneously acquisition.Results:The heel height and grade did not show any significant interaction with all the indicators.The increased grade of slope prolongs gait cycle time,decreased double step length,slowed down step frequency,increased the support phase and double support phase;decreased metatarsophalangeal joint,ankle,knee,hip joint sagittal motion amplitude and the amount of ankle motion,increased the ankle d,orsiflexion angle,knee flexion angle and hip flexion angle at the time of landing,the ankle varus angle;decreased the maximum ankle dorsiflexion torque,maximum torque,Sagittal positive power;increased maximum knee flexion torque decreases,maximum knee extension torque,maximum torque torque;decreased maximal knee torque,sagittal power maximum and minimum power,flexion Sagittal positive and negative work,the maximum flexion torque;increased the maximum hip extension torque,sagittal positive power;increased support phase and swing phase RMS of rectus femoris,medialis lateralis,lateral femoral,biceps Muscles,RMS of the tibialis anterior muscle.Increased RMS of lateral to the gastrocnemius muscle during the swing phase.INT of Support phase and swing phase rectus femoris,medialis lateralis,lateral femoralis,biceps femoris,anterior tibialis,medial gastrocnemius increased.INT increased in the lateral gastrocnemius muscle during the support phase.The maximal torque of ankle plantar flexion at 12°,the maximal sagittal power of the ankle,the maximum sagittal power of the hip joint,and the minimum sagittal power of the ankle joint were obtained.After 'heel heights increased,the extensor angles of the metatarsophalangeal joints increased,the amplitude of the sagittal plane metatarsophalangeal joints decreased,and the range of motion of the sagittal and frontal planes of the ankles decreased.The maximum ankle joint plantar flexion torque and the maximum valgus Torque,sagittal positive power decreased;knee extension maximum torque,maximum torque to reduce the varus,valgus maximum torque increased.Conclusions:1.When wearing high heel sneakers uphill,the body tends to choose to make the body more stable gait strategy;2.Ascending a certain amount of sneaker heel height can relieve ankle load and reduce ankle sprain Risk,but at the same time,the activity of the metatarsophalangeal joint is limited as well as the compensatory increase of medial knee load and quadriceps femoris activity.3.For the choict of heel height when going uphill,this study suggests to determine the appropriate range based on slope and road conditions,which will relieve the pressure on the triceps and ankle of the calf without making the knee joint And excessive hip joint compensation.