...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of human kinetics >Effect of Different Loads on Stroke and Coordination Parameters During Freestyle Semi-Tethered Swimming
【24h】

Effect of Different Loads on Stroke and Coordination Parameters During Freestyle Semi-Tethered Swimming

机译：自由式半拴式游泳中不同负荷对中风和协调参数的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The aim of this study was to analyse to what extent the use of different loads modifies freestyle stroke and coordination -parameters during semi-tethered swimming, and to examine whether those changes are -positive or negative to swimming performance. First, behaviour of swimming speed (v), stroke rate (SR) and stroke length (SL) with increasing loads was examined. Secondly, mean and peak speed of propulsive phases (propv_(mean) and propv_(peak)) were analysed, as well as the relative difference between them (%v). Finally, index of coordination (IdC) was assessed. Eighteen male swimmers (22.10+-4.31years, 1.79+-0.07m, 76.74+-9.00kg) performed 12.5m maximal sprints, pulling a different load each trial (0,1.59, 2.21,2.84, 3.46, 4.09, 4.71, 5.34, 5.96, 6.59, 7.21 and 7.84kg). Rest between repetitions was five minutes. Their feet were tied together, keeping a pull-buoy between legs and isolating the upper limb action. A speedometer was used to measure intra-cycle speed and the test was recorded by a frontal and a lateral underwater cameras. Variables v and SL decreased significantly when load increased, while SR remained constant (p<0.05). Propvmean and propvpeak decreased significantly with increasing loads (p<0.05). In contrast, %v grew when load rose (r = 0.922, p<0.01), being significantly different from free swimming above 4.71kg. For higher loads, swimmers did not manage to keep a constant velocity during a complete trial. IdC was found to increase with loads, significantly from 2.84kg (p<0.05). It was concluded that semi-tethered swimming is one training method useful to enhance swimmers' performance, but load needs to be individually determined and carefully controlled.
机译：这项研究的目的是分析在半系绳游泳期间不同负荷的使用在多大程度上改变了自由泳的中风和协调性参数，并检查这些变化对游泳成绩的正面还是负面。首先，研究了游泳速度（v），冲程速率（SR）和冲程长度（SL）随着负荷增加的行为。其次，分析了推进相（propv_（平均值）和propv_（峰值））的平均速度和峰值速度，以及它们之间的相对差（％v）。最后，评估了协调指数（IdC）。 18名男性游泳者（22.10 + -4.31年，1.79 + -0.07m，76.74 + -9.00kg）进行了12.5m最大冲刺，每次试验都施加不同的负荷（0,1.59，2.21,2.84，3.46，4.09，4.71，5.34 ，5.96、6.59、7.21和7.84公斤）。重复之间的休息时间为五分钟。他们的脚绑在一起，在两腿之间保持一个浮标并隔离上肢动作。使用速度计测量自行车内速度，并通过正面和侧面水下相机记录测试。当负载增加时，变量v和SL显着下降，而SR保持不变（p <0.05）。随着负荷增加，Propvmean和propvpeak显着降低（p <0.05）。相反，当负荷增加时，％v增大（r = 0.922，p <0.01），与4.71kg以上的自由泳明显不同。对于较高的负荷，游泳者在一次完整的试验中无法保持恒定的速度。发现IdC随着负载而增加，从2.84kg起显着增加（p <0.05）。结论是，半系绳游泳是一种有助于提高游泳者性能的训练方法，但负荷量需要单独确定和仔细控制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号