Author(s): 钟, 晓., 刘静民；林鹏, Institution: 清华大学, Country: CHINA, Abstract-ID: 2295

INTRODUCTION:
In recent years, the public has paid great attention to sprinting events, and the innovation of sports equipment technology has had a significant impact on sprinting performance. As a new type of equipment, carbon fiber plate running shoes are believed to be able to optimize the biomechanical characteristics of athletes and improve sprinting performance due to their unique design and material properties. However, the current research on the mechanism of action and biomechanical effects of carbon fiber plate running shoes in sprinting is still relatively limited. This study aims to explore the effects of carbon fiber plate running shoes on the biomechanical characteristics and sports performance of lower limbs of sprinters in the starting phase, and provide a scientific basis for training strategies and sports equipment selection.
METHODS:
Three high-level sprinters were selected in the starting phase of this study, all of whom were national first-level athletes or above. The experimental design included two running shoe conditions: running shoes with added carbon fiber plates (experimental group) and ordinary running shoes (control group). The two-dimensional fixed-point shooting method and two-dimensional camera analysis method were used to record the athletes kinematics and analyze the main gait parameters (air time, forward kick distance, step length, step frequency, ground contact time, etc.) and joint angles (knee angle, trunk angle, etc.). The data were analyzed by mathematical statistics. GraphPad prism 8.0.2 software was used to perform paired T tests on the parameters of wearing different running shoes to observe the effects of carbon fiber plate running shoes on various parameters.
RESULTS:
In the starting phase, carbon fiber plate running shoes significantly increased the knee angle of the first step (swing leg fold, p<0.05), prolonged the air time of the second step (p<0.05), and shortened the forward push distance of the third step (p<0.05).
CONCLUSION:
The biomechanical advantages of carbon fiber plate running shoes in the starting phase of sprinting can optimize the athletes movement efficiency and acceleration ability.