Sport and Physical Education Area, Biomedical Sciences Department, University of Alcalá, Madrid, Spain.
Physiology Unit, Systems Biology Department, University of Alcalá, Madrid, Spain.
J Strength Cond Res. 2018 Jun;32(6):1637-1642. doi: 10.1519/JSC.0000000000002037.
Pérez-Olea, JI, Valenzuela, PL, Aponte, C, and Izquierdo, M. Relationship between dryland strength and swimming performance: pull-up mechanics as a predictor of swimming speed. J Strength Cond Res 32(6): 1637-1642, 2018-This study aimed to examine the validity of the countermovement jump (CMJ) and the pull-up exercise as predictors of swimming performance. Twelve young male swimmers (Mean ± SD, 19 ± 3 years; 75 ± 10 kg; 180 ± 6 cm) with a homogenous level of performance (50-m freestyle time [50F]: 26.41 ± 1.44 seconds, coefficient of variance: 5.5%) participated in this study. Subjects performed a test of a single pull-up (PU) and a test of maximum number of pull-ups until muscular failure (PUF), and the mechanics of the ascending phase were recorded using a lineal force transducer. The height reached in a single CMJ test and the mean height during 30 consecutive CMJs were also determined. The swimmers' 50-m leg-only swimming time (50L) was also registered. The 50F time was strongly correlated with different variables of the PU (r = -0.76 to -0.80; p ≤ 0.05) and PUF test (r = -0.64 to -0.88; p ≤ 0.05), but not with the number of pull-ups performed. A significant relationship between 50F and 50L was observed (r = 0.78; p ≤ 0.05), with no relationship between the CMJ tests and swimming performance. Furthermore, multiple linear regression showed that 50L and the relative loss of velocity during the PUF test accounted for 84% (p < 0.001) of the 50F performance variance. This study shows the validity of the analysis of pull-up mechanics and 50L to predict short-distance swimming performance in trained swimmers, confirming the importance of upper-limb strength and leg kick on this sport.
佩雷斯-奥利瓦，JI，巴伦苏埃拉，PL，阿庞特，C，和伊扎奎尔多，M。干地强度与游泳表现的关系：引体向上力学作为游泳速度的预测指标。J 力量与调节研究 32(6)：1637-1642，2018-本研究旨在检验反跳（CMJ）和引体向上练习作为游泳表现预测指标的有效性。12 名年轻男性游泳运动员（平均±标准差，19±3 岁；75±10 公斤；180±6 厘米），运动成绩均匀（50 米自由泳时间[50F]：26.41±1.44 秒，变异系数：5.5%）。受试者进行了一次单臂引体向上（PU）测试和一次最大数量的引体向上至肌肉疲劳（PUF）测试，并使用线性力传感器记录上升阶段的力学。还确定了单次 CMJ 测试中达到的高度和 30 次连续 CMJ 期间的平均高度。游泳者的 50 米腿部游泳时间（50L）也被记录下来。50F 时间与 PU（r =-0.76 至-0.80；p≤0.05）和 PUF 测试（r =-0.64 至-0.88；p≤0.05）的不同变量呈强相关，但与完成的引体向上次数无关。观察到 50F 与 50L 之间存在显著关系（r =0.78；p≤0.05），而 CMJ 测试与游泳表现之间没有关系。此外，多元线性回归显示，50L 和 PUF 测试中速度的相对损失占 50F 表现方差的 84%（p<0.001）。本研究表明，分析引体向上力学和 50L 以预测训练有素的游泳运动员短距离游泳表现具有有效性，证实了上肢力量和腿部踢腿对这项运动的重要性。
