Brown University, Providence, Rhode Island, USA.
J Strength Cond Res. 2011 Oct;25(10):2639-44. doi: 10.1519/JSC.0b013e318207ed7a.
Start time has been shown to be a significant predictor of overall performance in the sport of luge. The starting motion in luge has been described as an explosive upper-body movement that requires significant technique and skill to perfect. This study aims to investigate upper-body factors that may relate to start time in luge. Twenty-two subjects participated in the study as part of their normal off-season training. Each subject had a minimum of 3 years' experience in the sport of luge, and at the time was a member of a U.S. Luge National Team. Subjects completed a 1 repetition maximum (1RM) in the bench press (BP), prone row (PR), and weighted pull-up (WP). Anthropometric distances were taken measuring finger-tip span (FS), biacromial breadth (BB), acromio-radial length, acromio-olecranon length (AO), hand length, and sitting cervical height. Subjects were divided into 2 groups based on which U.S. Luge National team they were currently a member of, Senior National (SN, n = 13) and Junior National (JN, n = 9). A Pearson product-moment correlation coefficient showed several significant (p ≤ 0.05) relationships between upper-body variables and start time among the groups. The BP and PR 1RM were shown to have a significant relationship in both groups. Among the anthropometric variables, AO was also significant in both groups. The WP, FS, BB, and height were all shown to have a significant relationship with start time in the SN group, but not in the JN group. These results suggest that as luge athletes become more efficient in the starting technique, outside factors such as upper-body strength and anthropometric measures play a larger role in performance.
出发时间已被证明是雪橇运动整体表现的重要预测指标。雪橇的出发动作被描述为一种需要高超技术和技巧才能完美完成的爆发性上半身运动。本研究旨在调查可能与雪橇出发时间相关的上半身因素。22 名受试者作为其正常淡季训练的一部分参加了这项研究。每位受试者都有至少 3 年的雪橇运动经验,并且当时是美国雪橇国家队的成员。受试者完成了一次 1 重复最大(1RM)的卧推(BP)、俯式划船(PR)和负重引体向上(WP)。人体测量距离测量指尖间距(FS)、双肩胛骨宽度(BB)、肩峰-桡骨长度、肩峰-尺骨长度(AO)、手长和坐姿颈椎高度。根据他们目前所属的美国雪橇国家队,受试者被分为 2 组,分别是高级国家队(SN,n = 13)和初级国家队(JN,n = 9)。皮尔逊积差相关系数显示,上半身变量与组间出发时间之间存在几个显著(p ≤ 0.05)的关系。BP 和 PR 1RM 在两个组中都显示出显著的关系。在人体测量变量中,AO 在两个组中也具有显著意义。WP、FS、BB 和身高都与 SN 组的出发时间有显著关系,但在 JN 组中没有。这些结果表明,随着雪橇运动员在出发技术上变得更加高效,上半身力量和人体测量等外部因素在表现中发挥着更大的作用。