1 00:00:05,410 --> 00:00:07,950 Alright so today we're all gonna work on butterfly. 좋습니다. 오늘은 모두 접영을 훈련하도록 하겠습니다. 2 00:00:08,040 --> 00:00:13,020 And butterfly, like breaststroke, are probably the two most leg dependent strokes out there. 평영과 마찬가지로, 접영은 다리에 의존하는 두 가지 영법에 속합니다. 3 00:00:13,620 --> 00:00:17,660 You got to have strong kick in order to have a fast fly. 빠른 접영을 하기 위해서는 강하게 찰 수 있는 다리를 가져야만 합니다. 4 00:00:17,920 --> 00:00:20,780 So the kick in the fly is absolutely critical. 네, 접영에 있어서 발차기는 절대적으로 중요합니다. 5 00:00:20,800 --> 00:00:26,320 But most swimmers form fly with a really strong down kick and a very weak up kick. 하지만 대부분의 선수들은 매우 강한 다운킥(down kick)과 매우 약한 업킥(up kick)을 구사하며 접영을 합니다. 6 00:00:26,740 --> 00:00:30,940 And the reason that fish swim so well is that they equally muscle on both sides. 물고기가 그렇게 잘 헤엄칠 수 있는 이유는 물고기들은 양 쪽 다 동일한 힘으로 밀어주기 때문입니다. 7 00:00:30,940 --> 00:00:33,860 They don't have a strong side and weak side like we do. 물고기들은 사람들이 그러한 것처럼 강한 쪽과 약한 쪽을 가지고 있지는 않습니다. 8 00:00:33,960 --> 00:00:36,860 Our up kick is never going to be as strong as down kick. 사람들의 업킥은 다운킥처럼 강해질 수는 없을 것입니다. 9 00:00:37,020 --> 00:00:39,520 But they push equally hard in both directions. 하지만 물고기들은 양쪽 다 똑같은 힘으로 밀어냅니다. 10 00:00:39,540 --> 00:00:43,500 When they do that, at the fin of the fish's tail, 물을 밀어낼 때에, 물고기들의 꼬리지느러미에는, 11 00:00:43,660 --> 00:00:48,000 there's a vortex or moving of water that comes behind the tail. 꼬리 뒤쪽으로 소용돌이, 즉 물의 흐름이 생겨납니다. 12 00:00:48,060 --> 00:00:52,320 So when they actually reverse the direction, they're not pushing against still water. 그래서 꼬리로 미는 방향을 전환할 때에, 정지되어 있는 물을 밀어내는 것이 아닙니다. 13 00:00:52,320 --> 00:00:55,840 They're actually pushing against water that's moving toward that fin. 실제로 물고기들은 꼬리 지느러미를 향해 움직이는 물에 대고서 미는 것입니다. 14 00:00:55,840 --> 00:00:57,780 And it makes that kick stronger. 그리고 그 것이 발차기(꼬리지느러미 움직이기)를 보다 강력하게 만듭니다. 15 00:00:57,820 --> 00:01:01,460 So the reason we kick hard in both directions, is to have a vortex, 우리가 양쪽 발차기(up and down kick)를 둘 다 강하게 해야 하는 이유는, 소용돌이, 16 00:01:01,460 --> 00:01:06,460 or to have a moving water to push against and to get more force out of the kick. 또는 움직이는 물을 만들어 내어서, 거기에 대하여 밀어내고, 그러함으로써 보다 강력한 힘을 가진 발차기를 얻기 위해서입니다. 17 00:01:06,660 --> 00:01:11,880 So the way I like to get you to appreciate kicking hard in both directions, 그래서 양쪽 방향으로 강하게 발차는 것을 잘 이해시키기 위해 당신에게 가르칠 방법은, 18 00:01:11,880 --> 00:01:14,400 is to get rid of the up and down, and to turn you on your side. 위아래로 움직이는 것을 없애고, 옆으로 가는 것입니다. 19 00:01:14,480 --> 00:01:19,400 So put your fins on, so you actually feel more pressure against your feet. 이제 오리발을 끼고, 그러면 발에 느껴지는 압력이 더 강할 것입니다. 20 00:01:19,660 --> 00:01:23,280 We're gonna have you kick from the hip down, not from the knee down, 무릎에서부터가 아니라, 엉덩이에서부터 발차기를 하십시요, 21 00:01:23,520 --> 00:01:27,640 extending that lever all the way to the body here. 지렛대를 몸의 이 부분까지 늘립니다. 22 00:01:27,920 --> 00:01:33,340 And we're gonna have you to kick holding onto the water in both directions, on your side, for about 20 meters. Okay. 옆으로 해서, 양쪽 방향으로 물을 붙잡는 발차기를 해가십시요, 약 20 미터를. 오케이. 23 00:01:40,590 --> 00:01:44,630 The dolphin kick has become so important in this sport of swimming, 수영이라는 경기종목에서 돌핀킥(the dolphin kick)은 매우 중요해졌습니다, 24 00:01:44,640 --> 00:01:47,740 since it can be used in every stroke not just butterfly. 접영에서 뿐만이 아니라 모든 영법에서 사용할 수 있게 되면서. 25 00:01:47,960 --> 00:01:50,740 It's often referred to as the fifth stroke. 돌핀킥(the dolphin kick)은 종종 다섯번째 영법이라고 일컬어집니다. 26 00:01:50,980 --> 00:01:56,280 Olympic champion Roland Schoeman helps us understand the mechanics of a great dolphin kick. 올림픽 챔피언 Roland Schoeman 이 우리가 잘난 돌핀킥(a great dolphin kick)의 구조를 잘 이해할 수 있도록 도움을 주고 있습니다. 27 00:02:03,100 --> 00:02:09,180 Starting with the hands and working toward the feet Roland maintains an extremely tight streamline. 손에서 시작하여 발까지 움직여 가는 동안에 Roland 는 꽉 조인 유선(流線 streamline)을 유지하고 있습니다. 28 00:02:09,280 --> 00:02:13,580 But the direction of the arms changes with each hip undulation. 하지만 팔의 방향은 엉덩이가 넘실거리는 것에 따라 변하고 있십니다. 29 00:02:13,580 --> 00:02:17,040 If he would try to hold the arms in a perfectly straight line, 만약에 그가 완벽하게 곧은 직선을 유지하려고 노력했다면, 30 00:02:17,160 --> 00:02:22,660 he wouldn't get the same power out of each kick as he does by allowing the arms to change directions. 팔의 방향이 바뀌는 것을 허용했을 때 만큼 강한 힘을 가진 발차기를 하지는 못했을 것입니다. 31 00:02:23,360 --> 00:02:26,180 Look at his arms' shadow on the bottom of the pool. 수영장 바닥에 비치는 팔의 그림자를 살펴보십시요. 32 00:02:26,240 --> 00:02:29,100 And note that change in direction with each kick. 매번 발차기를 할 때의 방향의 변화에 주목하십시요. 33 00:02:30,040 --> 00:02:37,040 The degree of undulation of the hips and the amount of knee bend are also extremely important in the dolphin kick. 엉덩이 넘실거림의 각도와 무릎을 굽히는 각도 또한 돌핀킥(the dolphin kickt)에 있어서 굉장히 중요합니다. 34 00:02:39,840 --> 00:02:41,280 All right. So use the fins, 좋아요. 오리발을 사용함으로써, 35 00:02:41,290 --> 00:02:46,750 so you get more surface area you can actually feel pushing against water in both directions side to side. 양쪽으로 움직이면서 보다 넓은 면적으로 물에 대고 밀어내는 느낌을 얻을 수 있습니다. 36 00:02:47,060 --> 00:02:48,440 But you got to swim without them. 하지만, 실제 경기에서는 오리발 없이 헤엄쳐야 합니다. 37 00:02:48,480 --> 00:02:50,120 So now let's take them off. 그래서 이번에는 오리발을 벗겠습니다. 38 00:02:50,200 --> 00:02:57,860 And I want you to swim on your side using your hip motion, feeling a pressure against your feet in both directions. 옆으로 하고 엉덩이 움직임을 이용해서 헤엄치십시요, 양쪽 모두 발에 눌려지는 압력을 느끼면서. 39 00:02:57,980 --> 00:03:04,580 But you gotta go a little higher cadence, a little higher stroke rate, in order to keep the same kind of speed. Okay? 하지만 이번에는 좀 더 빠른 리듬으로, 약간 빠른 진동 속도로 하여, 같은 정도로 나아가는 속도를 유지합니다. 오케이? 40 00:03:09,670 --> 00:03:15,590 The power derived from the kick should originate from the hip and core strength, not from the knees. 발차기를 통해 생성되는 힘은 무릎에서가 아니라, 엉덩이와 코어의 강력함에서 시작되어야 합니다. 41 00:03:16,440 --> 00:03:17,780 Even without fins, 심지어 오리발이 없어도, 42 00:03:17,780 --> 00:03:21,400 the extreme amount of hip excursion from side to side, 옆에서 옆으로 움직이는 엉덩이의 진폭이 매우 크고, 43 00:03:21,580 --> 00:03:24,580 and just the right amount of knee bend for the down kick, 다운킥(the down kick)을 할 때에 무릎을 굽히는 각도가 딱 적당하여, 44 00:03:24,640 --> 00:03:27,680 set Rolland up for an explosive propulsion. Rolland 가 폭발적인 추진력을 낼 수 있게 해줍니다. 45 00:03:28,360 --> 00:03:33,440 Bend the knees too much, and the drag forces bring you to a screeching halt. 무릎을 지나치게 굽힌다면, 저항력이 커져서 자동차로 치면 거의 끼익 소리가 날 정도로 정지하게 됩니다. 46 00:03:33,640 --> 00:03:37,160 Don't bend them enough, and you can't get enough power from the kick. 무릎을 충분히 굽히지 않는다면, 발차기에서 충분한 힘을 얻을 수 없습니다. 47 00:03:39,400 --> 00:03:43,780 While the legs and core are doing all the work, the feet are where the propulsion occurs. 다리와 코어가 힘을 쓰는 동안, 추진력이 발생하는 것은 두 발에서 입니다. 48 00:03:44,280 --> 00:03:46,920 Plantar flexibility of the ankles is essential, 발목과 발바닥의 유연성이 필수적입니다, 49 00:03:46,930 --> 00:03:51,350 in order to get the right angle on surface area pushing backward during the down kick. 다운킥(the down kick)을 하는 동안, 뒤로 밀어내는 발바닥 표면이 적당한 각도를 갖기 위해서는. 50 00:03:52,020 --> 00:03:59,260 The extraordinary range of motion of Rolland's feet on both up kick and down kick enable his powerful legs to kick fast. 업킥(up kick)과 다운킥(down kick)을 하는 Rolland 발바닥 가동범위가 엄청나게 커서, 강한 다리로 빠르게 발차기를 할 수 있습니다.
Hi Gary - I see you mention that it is important that Roeland undulates his arms while doing the dolphin kick. I was told rather that it is important to keep the arms and upper body as static as possible, preserving the streamline form, while the undulation and wave movement occurs in the lower body?
With the arms in a fixed streamline position, one cannot help but move the arms some with a hip undulation. The key is the right amount of hand/arm movement which appears to be 3-6 inches. Holding the arms steady means that the kick is relying too much on knee bend and not enough hip undulation.
This is what I thought - although it is almost impossible to avoid any undulation in the arms by virtue of the biomechanics involved. You might find this piece of research interesting: www.swimmingscience.net/dolphin-kick-frequency/?.com&
Hi Gary - I am a coach her in Israel and also a big fan of The Race Club. Video Analysis is one of my strengths and it helps me help my swimmers improve their technique. Would it be asking too much if you would do a critique on one of my video analyses? What I am asking is to watch the analysis (I can send via dropbox) and give me feedback?
phelps actually does it very well...he can undulate his hips without moving his arms as much as koeman here. I guess he just has above average core strength and flexibility.
dolphin kick ... that's something I need to master, a game changer for sure and avoid breathing during a 50m sprint which is insane for a regular person using the legs.
Thank you for talking about the arm movement - seems so often neglected in instructional dolphin videos. I have found that if I don't move my arms, the entire kick becomes weak and I go about half as fast. A question - if I am still seeing a bit of a 'pulsing' movement when I watch the pool bottom, should I take that as an indication that my upkick is not good? I wouldn't expect the upkick to be as strong as the downkick (as you pointed out), but should I see a perfectly even movement along the bottom of the pool or is a certain amount of unevenness to be expected since the upkick will never be as strong as the downkick? BTW - subscribed because I love your videos and explanations. Your flip turn video made my turn quite fast, to the point where a swim coach watching me swim (who didn't know me) told his students to watch my turn because I was doing the very techniques he was trying to get his kids to do (tight ball, arms in streamline before pushing off the wall, leaving the wall on your back). When talking to me later he had assumed I had swum in college. (I am 37 and started swimming about 3 years ago). Thank you!
The up kick can actually be stronger than the down kick, depending on how hard one works it. I have seen a few VM studies I have done where the velocity increases more on the up kick than the down kick...but it is unusual. Your head should be moving along with your arms, locked in a streamline position with the dolphin kick. The motion of the kick when doing dolphin kick only is pretty symmetrical in terms of timing...but not so with the butterfly swim. Hope this helps.
I love the DMC fins (Repellor model). You can order them on our website at www.theraceclub.com. They are shorter..but not too short and very comfortable on. strap is better than boot.
Most swimmers develop hyperextension of the knees which gives them a greater stroke volume during the fly, free and backstroke kicks...a definite advantage. This happens over years of kicking.
What is considered flexible? I can make a 180 degree angle with both of my feet yet my dolphin kick (or flutter) aren't that great... Can Schoemann bend his ankles much farther than that?
If you were to sit on the tops of your feet, hands off the ground, and elevate your knees into the air, you should be able to get them to at least 45 degrees. That is the type of ankle (plantar) flexibility that is required to kick fast.
This kick is an excellent training tool to tell us if the swimmer is getting the appropriate amount of undulation in the hip and knee bend. In a race where the swimmer leaves the wall after a turn there will be some kicks performed on the side as he or she make their way to the stomach to be ready for the breakout.
![เจ็บที่ยังฮัก - ม่อน วรวิทย์ [ Official Mv ] จอนนี่มิวสิค](http://i.ytimg.com/vi/KALIGSRSjFs/mqdefault.jpg)
I can't thank you enough Mr. Hall for providing us with such informative content! God bless you Sir!
Glad you like our videos. Sign up for our subscription. www.theraceclub.com. We have hundreds of videos like this one.
1
00:00:05,410 --> 00:00:07,950
Alright so today we're all gonna work on
butterfly.
좋습니다. 오늘은 모두 접영을 훈련하도록 하겠습니다.
2
00:00:08,040 --> 00:00:13,020
And butterfly, like breaststroke, are probably the two most leg dependent strokes out there.
평영과 마찬가지로, 접영은 다리에 의존하는 두 가지 영법에 속합니다.
3
00:00:13,620 --> 00:00:17,660
You got to have strong kick in order to have a fast fly.
빠른 접영을 하기 위해서는 강하게 찰 수 있는 다리를 가져야만 합니다.
4
00:00:17,920 --> 00:00:20,780
So the kick in the fly is absolutely critical.
네, 접영에 있어서 발차기는 절대적으로 중요합니다.
5
00:00:20,800 --> 00:00:26,320
But most swimmers form fly with a really strong down kick and a very weak up kick.
하지만 대부분의 선수들은 매우 강한 다운킥(down kick)과 매우 약한 업킥(up kick)을 구사하며 접영을 합니다.
6
00:00:26,740 --> 00:00:30,940
And the reason that fish swim so well is that they equally muscle on both sides.
물고기가 그렇게 잘 헤엄칠 수 있는 이유는 물고기들은 양 쪽 다 동일한 힘으로 밀어주기 때문입니다.
7
00:00:30,940 --> 00:00:33,860
They don't have a strong side and weak side like we do.
물고기들은 사람들이 그러한 것처럼 강한 쪽과 약한 쪽을 가지고 있지는 않습니다.
8
00:00:33,960 --> 00:00:36,860
Our up kick is never going to be as strong as down kick.
사람들의 업킥은 다운킥처럼 강해질 수는 없을 것입니다.
9
00:00:37,020 --> 00:00:39,520
But they push equally hard in both directions.
하지만 물고기들은 양쪽 다 똑같은 힘으로 밀어냅니다.
10
00:00:39,540 --> 00:00:43,500
When they do that, at the fin of the fish's tail,
물을 밀어낼 때에, 물고기들의 꼬리지느러미에는,
11
00:00:43,660 --> 00:00:48,000
there's a vortex or moving of water that comes behind the tail.
꼬리 뒤쪽으로 소용돌이, 즉 물의 흐름이 생겨납니다.
12
00:00:48,060 --> 00:00:52,320
So when they actually reverse the direction, they're not pushing against still water.
그래서 꼬리로 미는 방향을 전환할 때에, 정지되어 있는 물을 밀어내는 것이 아닙니다.
13
00:00:52,320 --> 00:00:55,840
They're actually pushing against water that's moving toward that fin.
실제로 물고기들은 꼬리 지느러미를 향해 움직이는 물에 대고서 미는 것입니다.
14
00:00:55,840 --> 00:00:57,780
And it makes that kick stronger.
그리고 그 것이 발차기(꼬리지느러미 움직이기)를 보다 강력하게 만듭니다.
15
00:00:57,820 --> 00:01:01,460
So the reason we kick hard in both directions, is to have a vortex,
우리가 양쪽 발차기(up and down kick)를 둘 다 강하게 해야 하는 이유는, 소용돌이,
16
00:01:01,460 --> 00:01:06,460
or to have a moving water to push against and to get more force out of the kick.
또는 움직이는 물을 만들어 내어서, 거기에 대하여 밀어내고, 그러함으로써 보다 강력한 힘을 가진 발차기를 얻기 위해서입니다.
17
00:01:06,660 --> 00:01:11,880
So the way I like to get you to appreciate kicking hard in both directions,
그래서 양쪽 방향으로 강하게 발차는 것을 잘 이해시키기 위해 당신에게 가르칠 방법은,
18
00:01:11,880 --> 00:01:14,400
is to get rid of the up and down, and to turn you on your side.
위아래로 움직이는 것을 없애고, 옆으로 가는 것입니다.
19
00:01:14,480 --> 00:01:19,400
So put your fins on, so you actually feel more pressure against your feet.
이제 오리발을 끼고, 그러면 발에 느껴지는 압력이 더 강할 것입니다.
20
00:01:19,660 --> 00:01:23,280
We're gonna have you kick from the hip down, not from the knee down,
무릎에서부터가 아니라, 엉덩이에서부터 발차기를 하십시요,
21
00:01:23,520 --> 00:01:27,640
extending that lever all the way to the body here.
지렛대를 몸의 이 부분까지 늘립니다.
22
00:01:27,920 --> 00:01:33,340
And we're gonna have you to kick holding onto the water in both directions, on your side, for about 20 meters. Okay.
옆으로 해서, 양쪽 방향으로 물을 붙잡는 발차기를 해가십시요, 약 20 미터를. 오케이.
23
00:01:40,590 --> 00:01:44,630
The dolphin kick has become so important in this sport of swimming,
수영이라는 경기종목에서 돌핀킥(the dolphin kick)은 매우 중요해졌습니다,
24
00:01:44,640 --> 00:01:47,740
since it can be used in every stroke not just butterfly.
접영에서 뿐만이 아니라 모든 영법에서 사용할 수 있게 되면서.
25
00:01:47,960 --> 00:01:50,740
It's often referred to as the fifth stroke.
돌핀킥(the dolphin kick)은 종종 다섯번째 영법이라고 일컬어집니다.
26
00:01:50,980 --> 00:01:56,280
Olympic champion Roland Schoeman helps us understand the mechanics of a great dolphin kick.
올림픽 챔피언 Roland Schoeman 이 우리가 잘난 돌핀킥(a great dolphin kick)의 구조를 잘 이해할 수 있도록 도움을 주고 있습니다.
27
00:02:03,100 --> 00:02:09,180
Starting with the hands and working toward the feet Roland maintains an extremely tight streamline.
손에서 시작하여 발까지 움직여 가는 동안에 Roland 는 꽉 조인 유선(流線 streamline)을 유지하고 있습니다.
28
00:02:09,280 --> 00:02:13,580
But the direction of the arms changes with each hip undulation.
하지만 팔의 방향은 엉덩이가 넘실거리는 것에 따라 변하고 있십니다.
29
00:02:13,580 --> 00:02:17,040
If he would try to hold the arms in a perfectly straight line,
만약에 그가 완벽하게 곧은 직선을 유지하려고 노력했다면,
30
00:02:17,160 --> 00:02:22,660
he wouldn't get the same power out of each kick as he does by allowing the arms to change directions.
팔의 방향이 바뀌는 것을 허용했을 때 만큼 강한 힘을 가진 발차기를 하지는 못했을 것입니다.
31
00:02:23,360 --> 00:02:26,180
Look at his arms' shadow on the bottom of the pool.
수영장 바닥에 비치는 팔의 그림자를 살펴보십시요.
32
00:02:26,240 --> 00:02:29,100
And note that change in direction with each kick.
매번 발차기를 할 때의 방향의 변화에 주목하십시요.
33
00:02:30,040 --> 00:02:37,040
The degree of undulation of the hips and the amount of knee bend are also extremely important in the dolphin kick.
엉덩이 넘실거림의 각도와 무릎을 굽히는 각도 또한 돌핀킥(the dolphin kickt)에 있어서 굉장히 중요합니다.
34
00:02:39,840 --> 00:02:41,280
All right. So use the fins,
좋아요. 오리발을 사용함으로써,
35
00:02:41,290 --> 00:02:46,750
so you get more surface area you can actually feel pushing against water in both directions side to side.
양쪽으로 움직이면서 보다 넓은 면적으로 물에 대고 밀어내는 느낌을 얻을 수 있습니다.
36
00:02:47,060 --> 00:02:48,440
But you got to swim without them.
하지만, 실제 경기에서는 오리발 없이 헤엄쳐야 합니다.
37
00:02:48,480 --> 00:02:50,120
So now let's take them off.
그래서 이번에는 오리발을 벗겠습니다.
38
00:02:50,200 --> 00:02:57,860
And I want you to swim on your side using your hip motion, feeling a pressure against your feet in both directions.
옆으로 하고 엉덩이 움직임을 이용해서 헤엄치십시요, 양쪽 모두 발에 눌려지는 압력을 느끼면서.
39
00:02:57,980 --> 00:03:04,580
But you gotta go a little higher cadence, a little higher stroke rate, in order to keep the same kind of speed. Okay?
하지만 이번에는 좀 더 빠른 리듬으로, 약간 빠른 진동 속도로 하여, 같은 정도로 나아가는 속도를 유지합니다. 오케이?
40
00:03:09,670 --> 00:03:15,590
The power derived from the kick should originate from the hip and core strength, not from the knees.
발차기를 통해 생성되는 힘은 무릎에서가 아니라, 엉덩이와 코어의 강력함에서 시작되어야 합니다.
41
00:03:16,440 --> 00:03:17,780
Even without fins,
심지어 오리발이 없어도,
42
00:03:17,780 --> 00:03:21,400
the extreme amount of hip excursion from side to side,
옆에서 옆으로 움직이는 엉덩이의 진폭이 매우 크고,
43
00:03:21,580 --> 00:03:24,580
and just the right amount of knee bend for the down kick,
다운킥(the down kick)을 할 때에 무릎을 굽히는 각도가 딱 적당하여,
44
00:03:24,640 --> 00:03:27,680
set Rolland up for an explosive propulsion.
Rolland 가 폭발적인 추진력을 낼 수 있게 해줍니다.
45
00:03:28,360 --> 00:03:33,440
Bend the knees too much, and the drag forces bring you to a screeching halt.
무릎을 지나치게 굽힌다면, 저항력이 커져서 자동차로 치면 거의 끼익 소리가 날 정도로 정지하게 됩니다.
46
00:03:33,640 --> 00:03:37,160
Don't bend them enough, and you can't get enough power from the kick.
무릎을 충분히 굽히지 않는다면, 발차기에서 충분한 힘을 얻을 수 없습니다.
47
00:03:39,400 --> 00:03:43,780
While the legs and core are doing all the work, the feet are where the propulsion occurs.
다리와 코어가 힘을 쓰는 동안, 추진력이 발생하는 것은 두 발에서 입니다.
48
00:03:44,280 --> 00:03:46,920
Plantar flexibility of the ankles is essential,
발목과 발바닥의 유연성이 필수적입니다,
49
00:03:46,930 --> 00:03:51,350
in order to get the right angle on surface area pushing backward during the down kick.
다운킥(the down kick)을 하는 동안, 뒤로 밀어내는 발바닥 표면이 적당한 각도를 갖기 위해서는.
50
00:03:52,020 --> 00:03:59,260
The extraordinary range of motion of Rolland's feet on both up kick and down kick enable his powerful legs to kick fast.
업킥(up kick)과 다운킥(down kick)을 하는 Rolland 발바닥 가동범위가 엄청나게 커서, 강한 다리로 빠르게 발차기를 할 수 있습니다.
Always well thought out, well explained and demonstrated clearly by top athletes.
Thanks!!!
What a nice performance! thank you hall
You are welcome!
Love these new videos! Very informative! Thanks Mr Hall!
Glad you like them!
What a great video. The physics insight of the stroke is great and very interesting. Thanks again
Glad it was helpful!
Very wise coach
Thanks!
Multe multumiri!
Bravo!
Hi Gary - I see you mention that it is important that Roeland undulates his arms while doing the dolphin kick. I was told rather that it is important to keep the arms and upper body as static as possible, preserving the streamline form, while the undulation and wave movement occurs in the lower body?
With the arms in a fixed streamline position, one cannot help but move the arms some with a hip undulation. The key is the right amount of hand/arm movement which appears to be 3-6 inches. Holding the arms steady means that the kick is relying too much on knee bend and not enough hip undulation.
This is what I thought - although it is almost impossible to avoid any undulation in the arms by virtue of the biomechanics involved.
You might find this piece of research interesting:
www.swimmingscience.net/dolphin-kick-frequency/?.com&
Hi Gary - I am a coach her in Israel and also a big fan of The Race Club. Video Analysis is one of my strengths and it helps me help my swimmers improve their technique. Would it be asking too much if you would do a critique on one of my video analyses? What I am asking is to watch the analysis (I can send via dropbox) and give me feedback?
Thank you...very interesting!
phelps actually does it very well...he can undulate his hips without moving his arms as much as koeman here. I guess he just has above average core strength and flexibility.
dolphin kick ... that's something I need to master, a game changer for sure and avoid breathing during a 50m sprint which is insane for a regular person using the legs.
Take as few breaths as possible in the 50 m sprint.
Learned something !
+David Kohl Good!
What are those blue fins you use in your videos? Who makes them?
DMC fins. You can purchase on our website at www.theraceclub.com
Thank you for talking about the arm movement - seems so often neglected in instructional dolphin videos. I have found that if I don't move my arms, the entire kick becomes weak and I go about half as fast. A question - if I am still seeing a bit of a 'pulsing' movement when I watch the pool bottom, should I take that as an indication that my upkick is not good? I wouldn't expect the upkick to be as strong as the downkick (as you pointed out), but should I see a perfectly even movement along the bottom of the pool or is a certain amount of unevenness to be expected since the upkick will never be as strong as the downkick?
BTW - subscribed because I love your videos and explanations. Your flip turn video made my turn quite fast, to the point where a swim coach watching me swim (who didn't know me) told his students to watch my turn because I was doing the very techniques he was trying to get his kids to do (tight ball, arms in streamline before pushing off the wall, leaving the wall on your back). When talking to me later he had assumed I had swum in college. (I am 37 and started swimming about 3 years ago). Thank you!
The up kick can actually be stronger than the down kick, depending on how hard one works it. I have seen a few VM studies I have done where the velocity increases more on the up kick than the down kick...but it is unusual. Your head should be moving along with your arms, locked in a streamline position with the dolphin kick. The motion of the kick when doing dolphin kick only is pretty symmetrical in terms of timing...but not so with the butterfly swim. Hope this helps.
hey gary, wich fins are the best to train speed, the short or the large ones?
I love the DMC fins (Repellor model). You can order them on our website at www.theraceclub.com. They are shorter..but not too short and very comfortable on. strap is better than boot.
this may be a stupid question, but is it possible to stretch your knees more backwards so that you get a greater surface area during the upkick?
Most swimmers develop hyperextension of the knees which gives them a greater stroke volume during the fly, free and backstroke kicks...a definite advantage. This happens over years of kicking.
Cool pool
Yes! Our home in the Keys.
👍👍👍👍👍
thanks
What is considered flexible? I can make a 180 degree angle with both of my feet yet my dolphin kick (or flutter) aren't that great... Can Schoemann bend his ankles much farther than that?
If you were to sit on the tops of your feet, hands off the ground, and elevate your knees into the air, you should be able to get them to at least 45 degrees. That is the type of ankle (plantar) flexibility that is required to kick fast.
new inovation the best
Syamsul Bachri Thank you!
is this kick allowed?? informative ved anyways
This kick is an excellent training tool to tell us if the swimmer is getting the appropriate amount of undulation in the hip and knee bend. In a race where the swimmer leaves the wall after a turn there will be some kicks performed on the side as he or she make their way to the stomach to be ready for the breakout.
😍😍😍😍😍
Thank you!
vortex? genius
Thanks.
How does Roland do this completely hypoxic!?!?
Most sprinters don't breathe during the 50 meter sprint of freestyle or fly.
theraceclub Incredible Pro Swimmer underwater ability! My son is weirdly good at this for his size..
A little higher cadence 😂 lol I am Cadence
:D
Hi Cadence!