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踏板力施加技术与进行超最大踏频骑行能力之间的关系。

The relationship between pedal force application technique and the ability to perform supramaximal pedaling cadences.

作者信息

Yamaguchi Yuta, Otsuka Mitsuo, Watanabe Kohei, Wada Naoki, Nishiyama Tetsunari

机构信息

Faculty of Sport Science, Nippon Sport Science University, Setagaya, Japan.

Laboratory of Neuromuscular Biomechanics, School of Health and Sport Sciences, Toyota, Japan.

出版信息

Front Sports Act Living. 2022 Aug 16;4:958827. doi: 10.3389/fspor.2022.958827. eCollection 2022.

Abstract

This study aimed to examine the relationship between the pedal force application technique under a specific competitive condition and the ability to perform steady-state pedaling at a supramaximal cadence during a special pedaling test. A total of 15 competitive male cyclists and 13 active, healthy men (novice cyclists, hereafter, novices) performed the pedaling technique test. The test imitated a road cycling competition condition (80% VO2 peak and a cadence of 90 rpm). Additionally, they performed a supramaximal cadence test that evaluated the ability to perform steady-state pedaling for an ultra-high cadence (range of 160-220 rpm) of 30 s stably with a 0.1 kgf. For the pedaling technique test, kinetic data were obtained by the pedal-shaped force platform at 1,000 Hz, and the pedaling technique was determined by the index of force effectiveness (IFE). For the supramaximal cadence test, kinematic data were obtained using a motion capture system at 200 Hz. The supramaximal pedaling cadence (C) was determined by measuring exercise time and targeted pedaling cadence. The IFE was 48.0 ± 9.7% in cyclists and 32.0 ± 5.9% in novices. The C was 215.5 ± 8.8 rpm in cyclists and 192.2 ± 13.0 rpm in novices. These values were significantly higher for cyclists than for novices. C was moderately correlated with IFE ( = 0.64). No significant correlation was observed between C and IFE for cyclists only; in contrast, a moderate correlation was observed between these parameters for novices only ( = 0.67). In conclusion, the pedal force application technique under a specific competitive condition is related to the ability to perform steady-state pedaling for supramaximal cadence during the test. Therefore, C may be able to explain pedal force application techniques without the need for expensive devices for novices.

摘要

本研究旨在探讨在特定竞赛条件下的踏板力施加技术与在特殊踏板测试中以超最大踏频进行稳态踏板运动能力之间的关系。共有15名竞技男性自行车运动员和13名活跃、健康的男性(以下简称新手,即新手自行车运动员)进行了踏板技术测试。该测试模拟了公路自行车比赛条件(最大摄氧量的80%,踏频90转/分钟)。此外,他们还进行了超最大踏频测试,该测试评估了在0.1千克力的情况下稳定进行30秒超高速踏频(160 - 220转/分钟)稳态踏板运动的能力。对于踏板技术测试,通过踏板形状的力平台以1000赫兹获取动力学数据,并通过力效率指数(IFE)确定踏板技术。对于超最大踏频测试,使用运动捕捉系统以200赫兹获取运动学数据。通过测量运动时间和目标踏频来确定超最大踏板踏频(C)。自行车运动员的IFE为48.0±9.7%,新手为32.0±5.9%。自行车运动员的C为215.5±8.8转/分钟,新手为192.2±13.0转/分钟。自行车运动员的这些值显著高于新手。C与IFE呈中度相关(= 0.64)。仅在自行车运动员中,C与IFE之间未观察到显著相关性;相反,仅在新手组中观察到这些参数之间存在中度相关性(= 0.67)。总之,特定竞赛条件下的踏板力施加技术与测试期间以超最大踏频进行稳态踏板运动的能力相关。因此,对于新手而言,C或许能够解释踏板力施加技术,而无需使用昂贵的设备。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/213f/9424655/7127d6b72ff9/fspor-04-958827-g0001.jpg

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