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Article

Effect of the Construction of Carbon Fiber Plate Insert to Midsole on Running Performance

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Faculty of Sports Science, Ningbo University, Ningbo 315000, China
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Doctoral School on Safety and Security Sciences, Óbuda University, 1011-1239 Budapest, Hungary
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Xtep Sports Science & Engineering Laboratory, Xtep Co. Ltd., Xiamen 361000, China
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Savaria Institute of Technology, Eötvös Loránd University, 9700 Szombathely, Hungary
*
Author to whom correspondence should be addressed.
Academic Editor: Stefano Bellucci
Materials 2021, 14(18), 5156; https://doi.org/10.3390/ma14185156
Received: 29 July 2021 / Revised: 26 August 2021 / Accepted: 30 August 2021 / Published: 8 September 2021
(This article belongs to the Special Issue Feature Paper in Section Carbon Materials)
In this paper, to investigate the independent effect of the construction of the forefoot carbon-fiber plate inserted to the midsole on running biomechanics and finite element simulation, fifteen male marathon runners were arranged to run across a runway with embedded force plates at two specific running speeds (fast-speed: 4.81 ± 0.32 m/s, slow-speed: 3.97 ± 0.19 m/s) with two different experimental shoes (a segmented forefoot plate construction (SFC), and a full forefoot plate construction (FFC)), simulating the different pressure distributions, energy return, and stiffness during bending in the forefoot region between the SFC and FFC inserted to midsole. Kinetics and joint mechanics were analyzed. The results showed that the footwear with SFC significantly increased the peak metatarsophalangeal joint (MTPJ) plantarflexion velocity and positive work at the knee joint compared to the footwear with FFC. The results about finite element simulation showed a reduced maximum pressure on the midsole; meanwhile, not significantly affected was the longitudinal bending stiffness and energy return with the SFC compared to the FFC. The results can be used for the design of marathon running shoes, because changing the full carbon fiber plate to segment carbon fiber plate induced some biomechanical transformation but did not significantly affect the running performance, what is more, reducing the peak pressure of the carbon plate to the midsole by cutting the forefoot area of the carbon fiber plate could be beneficial from a long-distance running perspective for manufacturers. View Full-Text
Keywords: longitudinal midsole bending stiffness; 3D kinematics; ground reaction force (GRF); footwear; carbon running shoes; performance; finite element simulation longitudinal midsole bending stiffness; 3D kinematics; ground reaction force (GRF); footwear; carbon running shoes; performance; finite element simulation
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MDPI and ACS Style

Fu, F.; Levadnyi, I.; Wang, J.; Xie, Z.; Fekete, G.; Cai, Y.; Gu, Y. Effect of the Construction of Carbon Fiber Plate Insert to Midsole on Running Performance. Materials 2021, 14, 5156. https://doi.org/10.3390/ma14185156

AMA Style

Fu F, Levadnyi I, Wang J, Xie Z, Fekete G, Cai Y, Gu Y. Effect of the Construction of Carbon Fiber Plate Insert to Midsole on Running Performance. Materials. 2021; 14(18):5156. https://doi.org/10.3390/ma14185156

Chicago/Turabian Style

Fu, Fengqin, Ievgen Levadnyi, Jiayu Wang, Zhihao Xie, Gusztáv Fekete, Yuhui Cai, and Yaodong Gu. 2021. "Effect of the Construction of Carbon Fiber Plate Insert to Midsole on Running Performance" Materials 14, no. 18: 5156. https://doi.org/10.3390/ma14185156

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