many times people ask me is it important to push quite far or make sure push I have a special theory about this that makes n you what I think [Music] so now we are all targets and we also have Korean skater they are very good in technique so let’s start with a good example so for the example the scaler is made out of her if we make it with make the hip from this square shape the shoulders will be this kind of round shape and the rate of the skater the case will looks like this on the ring so let’s beat the Korean skater now [Music] so if we look from the top now we have one care we see from the top from like from the sky I can push with this leg and he can stand on this lake for the example first let me explain you the system with the target the target is when you see the from a ball when you push and you’re pushing with your skate under your body weight like in the middle of the target you get every percent efficiency in the push the more you go out of the center of the target the less energy you get so let’s say it’s about 100 percent in the middle of the target 80 percent when you go a little bit more for 30 percent push when you push longer and only 10 percent more less efficiency when you’re really when you skate is far from your body weight that’s why use the target as an example now let’s do the skater in the middle of the target well what is really happening when I’m skating first there is a moment where I put my skate on the outside edge and my body weight is going on the outside like during the double push moment this one mark my skate is is still on the hundred percent efficiency and my body weight too then I bring back my body weight to the inside and still use my body weight mainly of the push so at this moment I’m still in the middle of the target so it’s also very good efficiency then I start to use the extension of my leg and I put pressure so when I’m here it’s still hundred percent efficiency when I push it in more far I still get some energy quite good but 80 percent but if I want to really push really far from my body weight you can see I will get really less pressure on my skate and less and less efficiency if my scale is going far for my wait because my body weight is far from the skate is very difficult to keep pressure on the skate and to keep really strong efficiency if you’re pushing unread kilo let’s say then here you only have 30% back but if you’re pushing 100% hundred kilos you’ll still have 80 kilos back in energy so it’s a big different that’s why I like more to spend more time pushing under the body weight and close to the body weight so it’s much more efficiency so if you start to push for better to make another movement and come back under the body weight to do the next step this is really how I like to show why I don’t recommend to push really really far from the body weight on the ice it would be a bit different because you always get gripped on the ice but only line really when your skate is far from your body you lose a lot of pressure and it makes big difference so there is something that make a difference between the good skater and the average skater that the good skater they are able to change the shape the shape of the target they can make the sutter of the target very big because they get a lot of grip with the skate it’s how much pressure you can put on the skate which makes you different let me show you like in drawing which will looks like between a sub square and a medium level scale let’s say that this drawing is the average skater and so he has a center of this target is quite a small still because it cannot keep the pressure very long when I push like a top skater would be able to make this hundred percent circle center of the target quite bigger let’s say about this distance so when the skater develop more pressure on a skate and the ability to keep it then is also able to keep more time in the Android push and pop so this would make big difference for the same pushing time so there is a very big difference into a mini skater or the scaler of different abilities to make the sander of a target big or not so with this example you can see it can make big difference let’s talk about the timing of the push now I show you during the dry land advice that it makes big difference to have good timing so let’s say for example I have a push that is 0.4 seconds long if I spend 0.1 seconds in the red then 0.1 second in the bloop time is 0.1 second in the green and the open once again in a in the black so I still push it with the timing of 0.4 second and I get efficiency with split between Android 83 and 10% now if I change a bit my timing I still keep push of 0.4 seconds but then I decide to try to spend more time like 0.2 second into the most efficient area and then 0.2 second in the 80% area then I get a really big difference in efficiency in one push so imagine when you skate one marathon along distance how many times how many push you do in a race so it makes a really really big difference between a top skater on average skater so I think you understand my point of view of course I think it’s better not to push too far

Inline skating technique: The target theory (Pascal Briand Vlog 11)

5 thoughts on “Inline skating technique: The target theory (Pascal Briand Vlog 11)

  • January 23, 2017 at 5:53 pm
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    I listen chad talking about this theory too, I'm having a hard time accepting it haha, what do you think about low hips position, does it helps to give more pressure to the push? if not, why we are still trying to get low body position if it is not to push longer? and one more thing, taking an example, Bart Swings has a long or short push to you? thx for your answers

    Reply
  • March 5, 2017 at 12:58 am
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    Hello and thanks for you many instructive videos. It does not appear that you are aware of the scientific literature on skating technique which has mostly been done in the Netherlands. Here are some references.

    A student thesis that gives an overview of the basic results:

    http://repository.tudelft.nl/islandora/object/uuid:5471f7b6-92bd-443f-ad4b-c84ea9b97162

    Some scientific papers, where some of the authors were instrumental in the development of the clap skate:

    http://fitnessforlife.org/AcuCustom/Sitename/Documents/DocumentItem/10509.pdf

    https://www.researchgate.net/publication/299740090_Giving_the_force_direction_analysis_of_speed_skater_push-off_forces_with_respect_to_an_inertial_coordinate_system

    http://jap.physiology.org/content/jap/98/1/227.full.pdf

    If I understand the science correctly, the most important point about the push is that only the horizontal (sideways) component of applied force leads to forward motion, the vertical component of applied force merely pushes the body upwards and does not contribute to propulsion. This means that, everything else being equal, the push is more efficient as leg lean angle increases. Experimental results from these papers show that faster skaters push later (so at a greater lean angle) than slower skaters who have a comparable total power output.

    This research was done for ice skating, but the same principles apply, except that ice skating has essentially infinite grip at all but the smallest lean angles, whereas for inline skating, grip decreases with lean angle.

    It appears to me that your concept of "pressure" is related to estimating the horizontal component of applied force.

    Best regards,

    -ilan

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  • October 24, 2017 at 3:12 pm
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    Pascal your theory makes a lot of sense to me, it helped me understand what I need to try in order to improve my technique. Thank you

    Reply
  • May 28, 2018 at 10:21 am
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    clearly understood sir .!!
    and thanks to you sir cauz u have made a big efforts.!! in making a wonderful vlog.!

    Reply
  • August 10, 2018 at 6:51 pm
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    I have to work this,xd. Trying hard but a I feel It's more difficult when you are tired. Thxs

    Reply

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