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Is it the shoes? A simple proposal for regulating footwear in road running
British Journal of Sports Medicine ( IF 18.4 ) Pub Date : 2019-10-19 , DOI: 10.1136/bjsports-2018-100480
Geoffrey T Burns 1 , Nicholas Tam 2
Affiliation  

In 2018, runners wearing the new Nike Vaporfly 4% running shoe broke world records over the 100 km, marathon, half-marathon and 15 km distances. This shoe has advanced the benefit of footwear further and more substantially than any other previous shoe. When Nike compared its energetic cost (running economy) to contemporary elite racing shoes, the Vaporfly provided a 4% improvement in economy (hence the shoe’s moniker) and an estimated 3.4% increase in running speed.1 Subsequent independent laboratory testing2 and big-data performance analyses3 have corroborated the benefit. The International Association of Athletics Federations (IAAF) rule 143.2 stipulates that shoes ‘must not be constructed so as to give athletes any unfair assistance or advantage’.4 While the Vaporfly gives runners an advantage, it does not violate current IAAF rules. However, many in the running community debate whether this shoe blurs the line between physiological and technological performance, and many have called for more explicit regulations. The Vaporfly deviates from conventional running shoes in three ways: (1) an embedded carbon-fibre plate, (2) its midsole material, and (3) its midsole thickness (figure 1). Each of these components has design features that reduce energy loss in isolation and, perhaps more-so, in combination. Figure 1 Schematic of the Nike Vaporfly 4% (images adapted from Nike.com) ### Carbon-fibre plate The full-length embedded carbon-fibre plate increases the longitudinal bending stiffness of …

中文翻译:

是鞋子吗?路跑鞋类调节的简单建议

2018 年,穿着全新 Nike Vaporfly 4% 跑鞋的跑者打破了 100 公里、马拉松、半程马拉松和 15 公里距离的世界纪录。与之前的任何其他鞋子相比,这款鞋更进一步、更显着地提升了鞋类的优势。当耐克将其精力成本(跑步经济性)与当代精英赛车鞋进行比较时,Vaporfly 提供了 4% 的经济性提升(因此该鞋的绰号)和跑步速度估计提高了 3.4%。1 随后的独立实验室测试 2 和大数据性能分析 3 证实了这一优势。国际田径联合会 (IAAF) 规则 143.2 规定,鞋子“不得被构造成给运动员任何不公平的帮助或优势”。4 虽然 Vaporfly 为跑步者提供了优势,但并不违反现行的国际田联规则。然而,跑步界的许多人争论这款鞋是否模糊了生理和技术性能之间的界限,许多人呼吁制定更明确的规定。Vaporfly 在三个方面与传统跑鞋不同:(1)嵌入的碳纤维板,(2)它的中底材料,以及(3)它的中底厚度(图 1)。这些组件中的每一个都具有设计特征,可以减少单独的能量损失,甚至可能更多地组合在一起。图 1 Nike Vaporfly 4% 示意图(图片改编自 Nike.com)### 碳纤维板全长嵌入式碳纤维板增加了……的纵向弯曲刚度。Vaporfly 在三个方面与传统跑鞋不同:(1)嵌入的碳纤维板,(2)它的中底材料,以及(3)它的中底厚度(图 1)。这些组件中的每一个都具有设计特征,可以减少单独的能量损失,甚至可能更多地组合在一起。图 1 Nike Vaporfly 4% 示意图(图片改编自 Nike.com)### 碳纤维板全长嵌入式碳纤维板增加了……的纵向弯曲刚度。Vaporfly 在三个方面与传统跑鞋不同:(1)嵌入的碳纤维板,(2)它的中底材料,以及(3)它的中底厚度(图 1)。这些组件中的每一个都具有减少单独能量损失的设计特征,也许更多地结合在一起。图 1 Nike Vaporfly 4% 示意图(图片改编自 Nike.com)### 碳纤维板全长嵌入式碳纤维板增加了……的纵向弯曲刚度。
更新日期:2019-10-19
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