Effect of the Sole-Insole Combination with Different Hardness on the Shock Absorption Performance of Sports Shoes

This paper discusses the effect of the combination of soles and insoles with different hardness on the shock absorption performance of sports shoes . The impact tester was used to test the impact of different combinations of three different hardness mid-soles (Shore C35°, Shore-C48°, Shore-C58°), two hardness insoles (Shore C51°, Shore C71°) and one rubber out-sole (Shore-A51°) on the evaluation index of shock absorption performance at three impact heights.Conclusion: Under the impact of high, medium and low energy, the material hardness can significantly affect the shock-absorbing performance of the sole-insole combination. The shock-absorbing performance of the sole-insole combination with high hardness sole or insole combination is poor, the shock-absorbing performance of the sole-insole combination with medium hardness sole or insole combination is medium, and the shock-absorbing performance of the sole-insole combination with low hardness sole or insole combination is good. In order to reduce the impact damage of the heel, it is recommended to select a low-hardness sole-insole combination sports shoes when performing low-energy impact sports such as low-speed walking,and the sole-inshoe combination sports shoes with low hardness and medium hardness when performing medium energy impact sports such as fast-speed walking, and the sports shoes with insole when performing high energy impact sports such as jogging.