Sine Wave-Sine Wave Motions
ITF跆拳道正弦波动的原理
Sine wave motion is a movement unique to original Tae Kwon Do to create maximum force in every moment according to the theory of power. In almost every moment this sine wave is utilized. Sine wave is natural and simple, and often I heard an instructor say: "Simple and natural = beautiful".
正弦波动运动（俗称流动，以下也简称为流动）是跆拳道特有的动作，是为了每个动作都发出最大的力而依据力的原理独创的。在跆拳道里的几乎每一个动作都利用了流动。流动是自然和简洁的，我经常听到师范们说：“简洁加上自然等于优美！”
During class and in seminars Tae Kwon Do practitioners are being taught to use "sine wave" in their techniques.
在课堂上和技术研讨会上，跆拳道练习者们被告诫在他们技术中使用“流动”。
What we actually do by performing this sine wave in Tae Kwon Do techniques is moving the center of our body mass by means of a motion, which would look like a sinus wave if we would draw it.
当我们在跆拳道技术动作中使用“流动”时，实际上是在每个动作中移动我们的重心，如果我们画出这个重心运动的轨迹，就会发现很接近正弦曲线。
There are some key benefits to using sine wave that are linked to the training secrets of Tae Kwon Do. Moving our center of mass in the motion of a sine wave require us to keep our arms and legs bent while the body is in motion. To keep the arms and legs bent during motion we need to be relaxed. Relaxing the body adds speed to a technique because we are not all tensed up with one part of the body working against another. Small increases in speed produce a large increase in the power of a technique.
使用正弦曲线流动有几个关键的好处，这也正是跆拳道修炼的秘诀。在每个动作中使我们的重心流动，意味着在每个动作中我们的胳膊和腿都需要稍微的弯曲。为了保持我们的胳膊和腿在运动中稍微的弯曲我们需要放松。身体的放松使我们的技术动作增加了速度，因为我们没有因为身体的紧张导致身体各部分之间相互的阻碍。一小点速度的增加导致技术动作力量的大量增加。
Secondly, when employing a sine wave we have to use the knee spring properly. That is to say bending the knee is what moves our body up and down as we move forward. Using the knee spring while our body is in motion allows our center of mass to travel along a curve, which by definition is another form of acceleration, which then helps us accelerate into a target.
其次，当我们使用正弦流动时，我们需要恰当地屈伸膝盖。这意味着当我们向前移动时主要通过弯曲膝盖来抬起和降低身体。当身体在动作时膝盖的屈伸导致我们的重心是沿着弧线轨迹运动的，这从理论上意味着另一种速度上的优势，也就是会导致我们更加快速地接近目标。
Finally, when using sine wave we are dropping our body downwards at the end of the technique with helps us use gravity to our advantage and keep our acceleration building until the point of impact.
最后，当我们使用正弦曲线运动时，在每一个动作结束时使我们的身体向下降落，这将使我们在最后击中目标前还能够利用重力的优势增加威力。
To correctly apply the sine wave to Tae Kwon Do we need to modify the wave shape before we can achieve maximum power. In other words the sine wave is not a uniform curve as shown in the previous figure. The sine wave is modified so that the body drops as it passes the half way point of the technique, and rises to the maximum height at about the ¾ point and then drops rapidly at the end. The rapid drop at the end of the technique helps accelerate our mass into the target using gravity to our advantage。
ITF跆拳道正弦波动的原理
Sine wave motion is a movement unique to original Tae Kwon Do to create maximum force in every moment according to the theory of power. In almost every moment this sine wave is utilized. Sine wave is natural and simple, and often I heard an instructor say: "Simple and natural = beautiful".
正弦波动运动（俗称流动，以下也简称为流动）是跆拳道特有的动作，是为了每个动作都发出最大的力而依据力的原理独创的。在跆拳道里的几乎每一个动作都利用了流动。流动是自然和简洁的，我经常听到师范们说：“简洁加上自然等于优美！”
During class and in seminars Tae Kwon Do practitioners are being taught to use "sine wave" in their techniques.
在课堂上和技术研讨会上，跆拳道练习者们被告诫在他们技术中使用“流动”。
What we actually do by performing this sine wave in Tae Kwon Do techniques is moving the center of our body mass by means of a motion, which would look like a sinus wave if we would draw it.
当我们在跆拳道技术动作中使用“流动”时，实际上是在每个动作中移动我们的重心，如果我们画出这个重心运动的轨迹，就会发现很接近正弦曲线。
There are some key benefits to using sine wave that are linked to the training secrets of Tae Kwon Do. Moving our center of mass in the motion of a sine wave require us to keep our arms and legs bent while the body is in motion. To keep the arms and legs bent during motion we need to be relaxed. Relaxing the body adds speed to a technique because we are not all tensed up with one part of the body working against another. Small increases in speed produce a large increase in the power of a technique.
使用正弦曲线流动有几个关键的好处，这也正是跆拳道修炼的秘诀。在每个动作中使我们的重心流动，意味着在每个动作中我们的胳膊和腿都需要稍微的弯曲。为了保持我们的胳膊和腿在运动中稍微的弯曲我们需要放松。身体的放松使我们的技术动作增加了速度，因为我们没有因为身体的紧张导致身体各部分之间相互的阻碍。一小点速度的增加导致技术动作力量的大量增加。
Secondly, when employing a sine wave we have to use the knee spring properly. That is to say bending the knee is what moves our body up and down as we move forward. Using the knee spring while our body is in motion allows our center of mass to travel along a curve, which by definition is another form of acceleration, which then helps us accelerate into a target.
其次，当我们使用正弦流动时，我们需要恰当地屈伸膝盖。这意味着当我们向前移动时主要通过弯曲膝盖来抬起和降低身体。当身体在动作时膝盖的屈伸导致我们的重心是沿着弧线轨迹运动的，这从理论上意味着另一种速度上的优势，也就是会导致我们更加快速地接近目标。
Finally, when using sine wave we are dropping our body downwards at the end of the technique with helps us use gravity to our advantage and keep our acceleration building until the point of impact.
最后，当我们使用正弦曲线运动时，在每一个动作结束时使我们的身体向下降落，这将使我们在最后击中目标前还能够利用重力的优势增加威力。
To correctly apply the sine wave to Tae Kwon Do we need to modify the wave shape before we can achieve maximum power. In other words the sine wave is not a uniform curve as shown in the previous figure. The sine wave is modified so that the body drops as it passes the half way point of the technique, and rises to the maximum height at about the ¾ point and then drops rapidly at the end. The rapid drop at the end of the technique helps accelerate our mass into the target using gravity to our advantage。
