Is a cork a legal shortcut? - A comparison of the measured and assumed amount of rotation in freestyle tricks.

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Applied Bio Materials Pub Date : 2024-09-18 DOI:10.1080/14763141.2024.2399255

Christian Merz,Falk Naundorf,Axel Schüler,Steven Pickardt,Tom Gorges,Matej Supej,Uwe G Kersting

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引用次数: 0

Abstract

In snowboard freestyle disciplines, the amount of rotation is commonly determined as the sum of rotations around all board axes and is the most important indicator of the trick difficulty across all snowboard freestyle disciplines. Based on the type of rotation, tricks can be classified as flatspins, corks and flips. It is not yet known whether the type of rotation of a trick can influence the actual amount of rotation. Therefore, the aim of this study was to determine the amount of deviation, defined as difference between measured and assumed amount of rotation as a function of trick classification, using kinematic motion analysis. The amount of deviation was positive for flatspins (median: 21°; min: -4°; max: 49°) and negative for corks (median: -25°; min: -89°; max: 12°) and flips (median: -28°; min: -94°; max: 13°). Our results demonstrate that there are ways of execution where riders perform corks and flips with a shortcut and flatspins with a detour. This should be taken into account by judges, coaches and riders. Further research is needed to investigate how the shortcut can be influenced.

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软木塞是合法的捷径吗？- 自由式技巧中测量到的旋转量与假定旋转量的比较。

在单板自由式滑雪项目中，旋转量通常是指围绕所有板轴的旋转总和，也是衡量所有单板自由式滑雪项目中技巧难度的最重要指标。根据旋转的类型，技巧可分为平旋、开伞和空翻。目前还不清楚技巧的旋转类型是否会影响实际的旋转量。因此，本研究的目的是利用运动学分析来确定偏差量，即作为花式分类函数的测量旋转量与假定旋转量之间的差异。平旋的偏差量为正值（中位数：21°；最小值：-4°；最大值：49°），而瓶塞（中位数：-25°；最小值：-89°；最大值：12°）和空翻（中位数：-28°；最小值：-94°；最大值：13°）的偏差量为负值。我们的结果表明，车手在执行开叉和空翻动作时会走捷径，而在执行平抛动作时会绕道。裁判、教练和骑手都应考虑到这一点。需要进一步研究如何影响捷径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Bio Materials Chemistry-Chemistry (all)

CiteScore

9.40

自引率

2.10%

发文量

464