I haven't used any translator but managed to understand that this video is a tutorial on how to do splits and increase leg flexibility for those who are beginners. I used to be good at splits when I was a kid but stopped maintaining it, and now it is challenging to renew it after decades. Very useful material, kudos to you, master! Osu!
This is new! stretches for high kicks. 最初のストレッチの意訳 1) 0:18 For those that can't do the splits at all. and can't bring their body forward in the standard split postured V seated position since their back is pointed out backwards. In that position it is very difficult to bring ones body forward even if one tries with all ones might [ the translator has used a suction cup attached to the dojo floor with a little success but not much], so first of all perform the standard warm up splits exercise with one leg folded in. Further, since the top and the bottom half the the body are connected, to encourage your leg to move in the right direction with toes pointed upwards, bring your same (stretched leg) hand into between your legs to lead your leg. Further more, since it is still likely to be difficult, don't look at your toes but, as people who are not supple do when they attempt high kicks do, look away backwards and bring the axis of your body down towards be back. [The aim is to increase rotation in your hip joint. I will try this now. I am not getting the hang of this, because I am not feeling much stretch, but then the sensei says that this is just the first step to encourage gentle use of the body and hip rotation] 2) 2:39 Skipped. Standard karate splits (kaikyaku) with raised posterior. 3) 4:30 Put one leg on a ledge. where you are comfortable and support yourself with your other hand. Then lower yourself to do one legged squats on your other leg assisted with your raised leg hand. Then to get more into a high kick stance,, move your raised leg toes forward as they would be in a kick, and (otherwise it will be difficult) point your support leg toes away from your raised leg [again as one does when doing a mawashi keri) and repeat the one legged squats. I love number three because it stretches, in a very high kick position, and improves strength in both knees. I do Bulgarian squats currently in an attempt to maintain knee strength but I think I will give up Bulgarian squats and do these instead high kick position one legged squats to stretch and improve knee strength in BOTH legs. There is lateral pressure on the raised knee too, and it is this kind of lateral movement that causes problems imho as one gets older. There is a number 4 but I have not tried it. どうもありがとうございます!↙(_ _)↘