JB Morin

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@Selvax94 Ай бұрын

Thanks for the tool and the tutorial, Prof Morin! What about wind? Do you advise to run an outdoor test only when wind is 0 or very low? Francesco

@javierpovedagalvan 2 ай бұрын

Is it recommended to use the slow motion mode (240 fps)?

@daanmichiels3512 3 ай бұрын

Hey jean benoit, is there a way to add more rows in the table so you get a more accurate result?

@ccoronels 4 ай бұрын

hi jb morin, my father is triyng to comprehend this sheet, he does not know any english. Can you please activate translation/subtitles for him, it would be really be helpful, thanks!

@choi6539 7 ай бұрын

Hi Dr. Morin, thanks a lot for your video! What would be the main purpose of this exercise?

@shahalamshaikh4626 7 ай бұрын

Hey JB, thanks for sharing such an informative video, also ,can you share me the resource/reference for the normative value of F0, V0, Pmax etc i want to use it in my clinical practise by using it plotting the graph .

@priveprive4381 8 ай бұрын

J'aurais aimé connaître l'intérêt de l'exercice afin de pouvoir l'appliquer correctement❤❤❤

@joonaojapalo6537 8 ай бұрын

Simple but effective! 👍

@Basketballlovers-r5e 10 ай бұрын

袁博那儿来的❤

@hernanrodriguez2313 Жыл бұрын

Hola. Como consigo esa hoja de calculo?

@kaiphan6335 Жыл бұрын

Hello, I cannot find the solver, did something in excel change to remove it?

@Mangersainement Жыл бұрын

Et sinon, pourquoi on se blesse avec un profil force-vitesse trop déséquilibrer ? Ca voudrais dire que pour courir vite sans blessure il faudrait un muscle fort qui soit capable de supporter les contractions rapides et intense d'un sprint ?

@Mangersainement Жыл бұрын

Ça pourrait être aussi une autre raison, comme le manque de renforcement des quadriceps, on sait que les ischios sont freinateurs sur le griffe en sprint, mais les quadriceps ne sont pas freinateurs eux aussi de l'extension de hanche et leurs faiblesse ne peuvent-elles pas expliquer les blessures aux ischios du à une contraction trop.rapide et intense répèter car le muscle quadriceps n'est pas.assez fort pour faire l'équilibre. J'ai vu que des experts de Volodalen, très intéressant sur leurs chaîne KZbin disent une théorie que c'est le muscle faible qui attire, donc le quadriceps qui est faible attire ce qui font que les ischios sont en surforce et pete.

@Mangersainement Жыл бұрын

Bonjour ne pensez vous pas que le risque de blessures concernant un manque de force est du au fait que pour courir vite il nous faut un niveau de force élevée au debut ?

@chadweprin9201 Жыл бұрын

Hey Jb, is there a chance I can see your great data on a hard copy spreadsheet, really trying to learn how your numbers all work, GREAT WORK HERE, THANK YOU CHAD

@freddyboire8578 2 жыл бұрын

Bonsoir Jean Benoit, vos podcast sont très intéressant et j'en suis fan .. Cependant, pourriez vous m'aiguiller sur mon mémoire. Je vais essayer de détailler ce thème qui est "l'analyse de la relation force/vitesse sur les 4 premiers appui en sprint". Merci encore.

@silasnew15 2 жыл бұрын

Very valuable info, thank you for this!

@choi6539 2 жыл бұрын

Hi, Thanks a lot for your video! Just a quick question - When I conduct the 'solver' button, it seems that the Tau of spreadsheet changes automatically. Is it the right way to do? Thanks! Seonghwan Choi

@FranciscoRodriguez-pu3wx 2 жыл бұрын

Hi Professor! I have a problem with the spreeedsheet. Everytime I put the information, the graphic is giving me the spreesheet has the Y axis on the Right and so Vo or Pmax is given in a negative number. How can I solve this problem? Kind regards

@emrullahyldrm1235 2 жыл бұрын

What is the difference between "V0" and" Maxspeed"?

@kaiphan6335 Жыл бұрын

Max speed reached during sprint and estimated true max speed

@willburks6085 2 жыл бұрын

Hi there, I am using this spreadsheet to calculate theoretical F and V output as well as Pmax for my thesis investigating if reducing the FV imbalance improves driving distance in golf. However, there appears to be issues when using the spreadsheet in certain individuals were the spreadsheet produces some very questionable numbers, mostly for Vo (negative numbers and numbers up to 33m/s). Could you help me understand why this is happening? Is it because some athletes are recreational and not that well trained?

@leonnieder9876 2 жыл бұрын

You noted the split times are only valid for radar-technology and not timing gates as the split times used with timing gates would overestimate F0 and Pmax. Is there any option to assess the FV-Profile with timing gates?

@richardstevenrojasgrisales1610 2 жыл бұрын

Hi teacher! First of all, thanks for sharing this spreadsheet. I wanted to ask you, what do the results obtained by the athlete mean? How might these results influence the athlete performance? What do you recommend to the athlete to improve their performance? And lastly and very importantly, I would like to know how the athlete's results are interpreted? No analysis, just talk about the numerical result. Thank you very much, I'll pay attention.

@hernanrodriguez2313 Жыл бұрын

Hola tenes la hoja de calculo de fuerza velocidad??

@brentmorris4371 2 жыл бұрын

Is the weight of the sled included in the different loads?

@jbmorin3327 2 жыл бұрын

Hi Brent, yes it is the total mass that is pulled

@SteveSmithPT 2 жыл бұрын

Hello! Thanks for providing these resources. Do you have a tutorial for the jump FVP? I am not able to access it from the page on your website.

@jbmorin3327 2 жыл бұрын

Hi, thank you, normally it links to the video here : kzbin.info/www/bejne/eoGrc4VsitKVb5I

@SteveSmithPT 2 жыл бұрын

@@jbmorin3327 Thanks very much

@yeezumz5215 2 жыл бұрын

Hi , I am a collegiate sprinter who is trying to adapt the FVP to maximize my training. How would an athlete reduce DRF to improve speed?

@Johnwicko1301 3 жыл бұрын

Thank you a lot for your efforts and others .

@In-TensionTraining 3 жыл бұрын

what if we aren't able to obtain 5 or 6 split times? I only have the technology to get 2 at most using lasers

@jbmorin3327 3 жыл бұрын

Hi Roy, i'm afraid it will be a problem since several times are needed to form the position-time and then speed-time curve, our data and some studies show that at least 5, 10 and 20m splits are the minimal amount of time points necessary

@stephanefortin6497 3 жыл бұрын

Bonjour, pourrais-je savoir d'ou viens le 1.059, le 3.68 et le .405 dans la 1er colonne; je ne comprends pas d'ou viens cette infos..merci

@jbmorin3327 3 жыл бұрын

Bonjour, il s'agit des temps (lisible en bas de l'écran de l'application) auxquels on a cliqué sur "start" soit le temps qui s'est écoulé, pour chaque sprint analysé, entre le début de la vidéo et le départ du sprint

@tony.thelion 3 жыл бұрын

Hi, excellent job! I would like to know why the RF values starts to show after 0,5s time, and not before

@jbmorin3327 3 жыл бұрын

thanks ! It is because during the very early acceleration the center of mass rises a little bit from crouched position to upright, so the vertical component of the GRF is not exactly equal to bodyweight over the step cycle. It is the case after 0.3 to 0.5 s . but since the RF-speed curve is then linear this does not influence computations

@proddavidoh3266 3 жыл бұрын

Hello, In one of your articles: Interpreting Power-Force-Velocity Profiles for Individualized and Specific Training stated that..... "Adding the previously described vertical profiling to this horizontal profiling could help better determine whether a lower HZT-F0 is due to an overall deficit of lower-limb strength (as indicated by a low VTC-Pmax) and/or a deficit in the transfer of this strength in the specific horizontal push-off motion (technical capability)." I am having trouble understanding what is considered a low vertical maximal power output. Can you help clarify? Hope to hear from you soon, Thanks again.

@jbmorin3327 3 жыл бұрын

Hi David, the idea is that if you know the "non-specific" F0 of the athlete (ie the F0 measured during the squat jump test profile) then you can better interpret a low sprinting F0: typically if you observe a low F0 in sprinting (say 5-6-7 N/kg depending on the sport and level/context) BUT the athlete have a good vertical F0 (say 40 N/kg or more depending on level and context) then you can interpret that as being a weakness in how this good force capability in absolute terms is transferred to sprint-specific force output. If BOTH F0s are low then you know that you'll need to work on BOTH a better maximal force capability AND a better sprint specific force output. This is one reason why even if your focus is sprint acceleration, the jump profile might be an interesting piece of info

@proddavidoh3266 3 жыл бұрын

@@jbmorin3327 thank you!

@josecarlosalbarello2092 3 жыл бұрын

Hi Professor! First of all, thanks for sharing this spreadsheet. It's an amazing and very useful tool. I was implementing these equations in MATLAB and I found a contradictory result between my Sfv_opt value and yours. Checking the supplemental digital content from the original article, I noted that in the last part of the equation A12 (Sfv_opt), there is a minus signal, but in this spreadsheet, there is a plus signal. Please, which one is correct?

@jbmorin3327 3 жыл бұрын

Dear Jose, thank you for your message, yes it should be a plus sign, as in the spreadhseet. As crazy as it seems we sent the final version of the paper with a plus sign in the Appendix equation A12, and the edition process ended up with a minus sign here 😩...so we had to write a comment and erratum on the paper and re-upload the good version...that is now on researchgate.

@josecarlosalbarello2092 3 жыл бұрын

Thank you so much!

@hernanrodriguez2313 Жыл бұрын

Hola Tenes la hoja de calculo de perfil fuerza velocidad??