Effect of inclination and position of new swimming starting block's back plate on track-start performance
Effect of inclination and position of new swimming starting block's back plate on track-start performance
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DOI：
10.1080/14763141.2011.637122
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发表时间：
2012-01-01
影响因子：
2.2
通讯作者：
Tsubakimoto, Shozo
中科院分区：
文献类型：
--
作者：
Takeda, Tsuyoshi;Takagi, Hideki;Tsubakimoto, Shozo
本研究调查了起始平台上背板的前后位置和倾斜度对游泳起始性能的影响。 10 名男子大学游泳运动员以不同的起跳角度（正常和较低）、倾斜角度（10 度、25 度、45 度和 65 度）和位置（距离起跑台前缘 0.29、0.44 和 0.59 m）组合进行了 8 次起跑。对具有起飞角度（正常和较低）和倾斜度（10 度和 45 度）的四种条件进行双向重复测量方差分析（ANOVA；起飞角度 x 背板），并进行单向方差分析以比较四种倾斜度和三个位置。使用 Bonferroni 的方法进行了多重比较。起飞角的主要影响是垂直速度和合成起飞速度 [分别为 F(1,18) = 36.72, p < 0.001 和 F(1,18) 9.58, p = 0.013]。板位之间的比较表明，0.29 m工况的5 m时间明显较长，0.59 m工况的起飞角和垂直起飞速度明显较低，0.29 m工况的水平起飞速度和合成起飞速度明显较小。后脚起跳时间明显较长（按升序排列）：0.29、0.44 和 0.59 m。
This study investigated the effects of both anterior-posterior position and inclination of a back plate positioned on a starting platform on swimming start performance. Ten male college swimmers performed eight starts with varying combinations of take-off angle (normal and lower), inclination angle (10 degrees, 25 degrees, 45 degrees, and 65 degrees) and position (0.29, 0.44, and 0.59 m from the front edge of the starting block). Two-way repeated measures analysis of variance(ANOVA; take-off angle x back plate) for four conditions with take-off angles (normal and lower) and inclinations (10 degrees and 45 degrees), and one-way ANOVA for comparisons between four inclinations and three positions were carried out. Multiple comparisons were made using Bonferroni's method. The main effects of the take-off angle were on the vertical and resultant take-off velocities [F(1,18) = 36.72, p < 0.001 and F(1,18) 9.58, p = 0.013, respectively]. Comparisons between the plate positions showed that the 5 m time of the 0.29 m condition was significantly longer, the take-off angle and vertical take-off velocity of the 0.59 m condition were significantly lower, and horizontal and resultant take-off velocities of the 0.29 m condition were significantly less. Rear foot take-off times were significantly longer in the ascending order: 0.29, 0.44, and 0.59 m.