Adaptations to six months of aerobic swim training. Changes in velocity, stroke rate, stroke length and blood lactate.
Adaptations to six months of aerobic swim training. Changes in velocity, stroke rate, stroke length and blood lactate.
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适应六个月的有氧游泳训练。
DOI：
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发表时间：
1993
影响因子：
2.5
通讯作者：
M. Miyashita
中科院分区：
文献类型：
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作者：
K. Wakayoshi;Takayoshi Yoshida;Y. Ikuta;Y. Mutoh;M. Miyashita
本研究旨在探讨有氧游泳训练对游泳速度、划水频率、划水长度及血乳酸浓度的影响。受试者是受过训练的男性大学游泳运动员（n = 8）。测量值是在专门设计的400米自由泳测试，干预前和干预后获得的。游泳测试包括两天的4x 400米自由泳。在第1天，受试者进行了最大努力400米自由泳游泳试验;每个游泳者的最大平均速度（Vmax）从这个努力计算。在第二天，受试者被指示以分别等于Vmax的85%、90%和95%的恒定速度进行三次400米自由泳游泳。受试者在游泳之间休息一小时。在每次400 m试验中，测量圈速和完成10次池中划水（50 m）的时间，以确定SV（m.s-1）、SR（stroke.min-1）和SL（m.stroke-1）。在每次400 m试验结束时采集混合动脉血样本，以评价血乳酸浓度。结果表明，干预后最大游泳速度（Vpostmax）较干预前显著增加（p < 0.05）。血乳酸浓度相对于SV显著降低，Vpostmax后的绝对乳酸浓度显著低于Vpremax时的绝对乳酸浓度（p < 0.05）。7例受试者中有6例因SL增加而增加Vmax。第二次测试期间的平均SL显著更高（p < 0.05）。在400 m最大负荷试验中，SL在第6圈后显著增加（p < 0.05）. SR之间无显著差异。（250字处删节）
The purpose of this investigation was to determine how swimming velocity (SV), stroke rate (SR), stroke length (SL) and blood lactate concentration change as adaptations to six months of aerobic swim training. Subjects were trained male college swimmers (n = 8). Measurements were obtained following specially designed 400m freestyle swim tests, pre- and post-intervention. The swim test consisted of 4 x 400 m freestyle over two days. On day 1, subjects performed a maximal effort 400 m freestyle swimming trial; maximal mean velocity (Vmax) for each swimmer was calculated from this effort. On the next day, subjects were instructed to perform three 400 m freestyle swims at constant velocities equal to 85%, 90% and 95% of Vmax, respectively. Subjects rested one hour between swims. During each 400 m trial, lap time and time to complete 10 mid-pool strokes (50 m) were measured to determine SV (m.s-1), SR (stroke.min-1) and SL (m.stroke-1). Mixed arterial blood samples were taken at the end of each 400 m trial to evaluate blood lactate concentration. Results indicated that post-maximal swimming velocity (Vpostmax) increased significantly from pre-intervention measures (p < 0.05). Blood lactate concentration decreased significantly relative to SV and absolute lactate concentration following Vpostmax was significantly lower than that at Vpremax (p < 0.05). Six of seven subjects increased Vmax due to increases in SL. Mean SL during the second test was significantly higher (p < 0.05). Also, during the 400 m maximal test, SL increased significantly after sixth lap (p < 0.05). There was no significant difference between SRs.(ABSTRACT TRUNCATED AT 250 WORDS)