游泳速度可以简化为一个物理方程:(S)速度=泳姿(L)划幅x泳姿(R)划频
Gaining speed in the water is not rocket science. It is the product of two simple factors that can be improved with better technique, less drag, and increased strength and endurance. 加快在水里的速度不是火箭科学。两个简单的因素可以更好的提高技术,减少阻力,增加力量和耐力。
Stroke length is defined as the number of meters covered with each stroke. Reducing the number of strokes needed to cross the pool is a common drill to improve this factor. Some variables can affect this number, including underwater streamline and kick propulsion. Get the most out of descending stroke count by keeping the variables constant and finding other ways to improve length: 划幅的长度定义为每米前进的距离。减少划幅在游泳池里练习的时候对于游泳爱好者是非常常见的。一些变量会影响这个数字,包括水下超直和腿推进。重复利用这个变量来保持速度的同时，也可以找到其他改善的方法: – Improve horizontal body position along the surface of the water. ——提高在水里水平体位。 – Increase glide by reaching forward and finishing past the hip with each stroke. ——增加臀部向前滑行通过的有效率。 – Create a powerful underwater pull with a high elbow and straight wrist. ——创建一个强大的连续水下高手肘推水和直的手腕。
Stroke rate is the number of single strokes taken in 60 seconds. It can be calculated by a person on deck with a stopwatch. The simplest method is to count how many strokes are taken in 15 seconds and multiply that number by four. Tools like the Finis Tempo Trainer or the Wetronome can simplify training with stroke rate. Try these three methods. 60秒里泳姿的划频。它可以由一个人在泳池上用秒表计算。最简单的方法是计算有多少动作在15秒,然后将这个数字乘以4。最简单的方式就是使用Finis Tempo工具。下面再介绍一下三种方法，大家试试。 – Set the tempo at your current stroke rate and try to take fewer strokes per lap. ——控制节奏的频率在每圈游泳中，并减少划水频率。 – Set the tempo at a higher rate and try to maintain your current stroke count per lap. ——提高速度的同时保持不变的频率在每趟游泳中。 – Record your time for a 100 at various stroke rates. Observe what tempo produced the fastest 100. 记录100次泳姿的不同频率，观察哪个节奏在这100次中是最快的。
Swim Golf is another way to find the stroke rate and length that’s most efficient for you. The set combines the number of strokes and the number of seconds used to swim a 50. For example, a swimmer who takes 35 strokes and swims 45 seconds has a Swim Golf score of 80. Complete 4–6 x 50 and try to lower your score each time. 游泳高尔夫是另一种方式，它可以找到更有效的泳姿(L)划幅x泳姿(R)划频。结合划水次数和游泳时间在每圈中。例如,一个游泳运动员需要35划次和45秒完成50米，它的游泳高尔夫80分。完成4 - 6组 x 50,试图降低你的每次得分。
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