用五种基于速度的训练装置测量举重动作中速度的准确性

IF 1.5 4区 教育学 Q3 HOSPITALITY, LEISURE, SPORT & TOURISM International Journal of Sports Science & Coaching Pub Date : 2024-08-02 DOI:10.1177/17479541241266248
Sergio A. Lemus, Mallory Volz, Avery Blasdale, Francisco Beron-Vera, Cheng-Bang Chen, Bryan J. Mann, Francesco Travascio
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引用次数: 0

摘要

举重运动在竞技和娱乐环境以及特定运动训练中非常普遍。传统上,举重教练会根据个人的最大能力规定特定的训练负荷。基于速度的训练提供了另一种方法,有望根据速度对力量进行量化,并通过实时反馈提供可提高竞争力的信息。市场上有各种速度测量设备。它们的精确性对于充分实施基于速度的训练至关重要。本研究的目的是将其中五种设备在抓举和挺举两个举重动作中的同心峰值速度测量结果与 12 摄像机动作捕捉系统收集的数据进行比较,后者被视为黄金标准。根据假设,本研究中使用的速度测量设备将根据其零售价格的不同而在精确度上有所不同。对 12 名竞技举重运动员进行的抓举和挺举进行了与轻度和中度(单次最大负重的 40% 和 70%)负重相关的速度读数测量。通过将五种装置与标准测量进行比较,使用最小乘积回归法评估有效性。一般线性模型显示,使用这五种设备测得的速度存在统计学差异(p < 0.001)。具体而言,GymAware RS 线性位置传感器是最准确的设备,在用于量化抓举和挺举的速度时,没有显示出固定或比例偏差。其余四种设备则明显低估了峰值速度,这将直接影响到举重运动员的日常训练计划。在实施基于速度的训练之前,练习者必须考虑每种设备的误差和偏差。
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The accuracy of measuring velocity during weightlifting movements with five velocity-based training devices
The use of weightlifting exercises is prevalent in competitive and recreational environments, as well as sport-specific training. Traditionally, weightlifting coaches prescribe specific training loads based on an individual's maximal ability. Velocity-based training offers an alternative method that promises to quantify strength based on velocity and provides information that increases competitiveness through real-time feedback. Various velocity measurement devices are available on the market. Their precision is critical for the adequate implementation of velocity-based training. The aim of the present study was to compare the concentric peak velocity measurements of five of these devices during two weightlifting movements, the snatch and clean, to data collected with a 12-camera motion capture system, which was considered as gold standard. It was hypothesized that the velocity measurement devices used in this study would vary in accuracy based on their retail prices. Velocity readings associated with light and moderate (40% and 70% of one-repetition max) loads were measured for both the snatch and clean performed by 12 competitive weightlifters. A least products regression was used to assess validity by comparing five devices against a criterion measure. A general linear model showed statistical differences in the velocities measured with these five devices ( p < 0.001). Specifically, the GymAware RS linear position transducer was the most accurate device, demonstrating no fixed or proportional bias when used to quantify velocity during the snatch and clean. The remaining four devices significantly underestimated peak velocity, which would directly impact the daily planning of lifters’ training. Practitioners must consider the error and bias of each device before implementing velocity-based training.
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来源期刊
CiteScore
3.50
自引率
15.80%
发文量
208
期刊介绍: The International Journal of Sports Science & Coaching is a peer-reviewed, international, academic/professional journal, which aims to bridge the gap between coaching and sports science. The journal will integrate theory and practice in sports science, promote critical reflection of coaching practice, and evaluate commonly accepted beliefs about coaching effectiveness and performance enhancement. Open learning systems will be promoted in which: (a) sports science is made accessible to coaches, translating knowledge into working practice; and (b) the challenges faced by coaches are communicated to sports scientists. The vision of the journal is to support the development of a community in which: (i) sports scientists and coaches respect and learn from each other as they assist athletes to acquire skills by training safely and effectively, thereby enhancing their performance, maximizing their enjoyment of the sporting experience and facilitating character development; and (ii) scientific research is embraced in the quest to uncover, understand and develop the processes involved in sports coaching and elite performance.
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