JB Morin

Sprint mechanics📊 If all courts, fields & tracks had force plates & 3D📽providing force, velocity, kinematics etc easily, ALL coaches, physios, scientists would use such data (propulsive force magnitude, orientation...)✅ Even those who now claim it's useless, for sure.

🚨NEW PAPER🚨 The @exergenie pulley for resisted sprint🏃‍♂️, calibration, comparison with sled modality @SportPerfSciR sportperfsci.com/the-exer-genie… Extends previous blog post, with downloadable files📊 🔗 jbmorin.net/2022/08/03/spr… Congrats to Nayel Constant, nice Masters work 🧑🏻‍💻🧑🏻‍🎓

Merci à l’excellent Zatopek pour son invitation à commenter nos études récentes sur les évolutions de performance en sprint Quelques hypothèses discutées: pourquoi les gains de performance sont plus élevés chez les femmes que chez les hommes🧐🔬 Dispo dans tous vos kiosques! 📖

Bullshit Asymmetry Principle perfect illustration modelthinkers.com/mental-model/b…

🚨NEW PRE-PRINT & BLOG POST🚨 Individual resisted sprint🏃‍♂️load-velocity relationship We address 2 🔑practical problems🧐 📈Entire load-velocity profile w/ only 2 sprints✅ 🚀Vmax estimation without a top speed trial✅ jbmorin.net/2025/07/21/the… Read📄share🔄send us feedback🎯🤝!

Clearly, using an absolute load (e.g., a 100-kg squat) or a body-mass-relative load (e.g., 150% body mass) for two individuals is an imprecise way to set the load. The same is true for resisted sprint training. jbmorin.net/2025/07/21/the… via @jb_morin

The "RACLET" test preprints are here ! ✅running ✅cycling ✅isometric tasks The summer blockbuster readings you wanted 🏖️☀️

Real innovation in sports testing: Potentially a game-changer concept 💡for endurance testing, especially in team sports, follow this LIBM group for preprints, concept and updates bravo @B_MorelP @PierreSamozino &al! 👇

Tired of exhausting performance tests? #FoVE group is launching RACLET: a quick (~5 min), non-exhaustive test to assess the critical intensity threshold! 💪 A game-changer for researchers, coaches & clinicians. 3 preprints are out now! 👇 #SportsScience #ExercisePhysiology

We're all in on #OpenScience! 🔬 All protocols, guides, and analysis codes are freely available on our GitLab for you to use and adapt. ➡️ Get the tools: gricad-gitlab.univ-grenoble-alpes.fr/fove/methods/r… Please RT to share, and let us know your feedback! #OpenSource

The RACLET test is versatile. We've validated it for: 🏃‍♀️ Running Velocity: biorxiv.org/content/10.110…🚴 Cycling Power: biorxiv.org/content/10.110…💪 Isometric Force: biorxiv.org/content/10.110… Each study shows the test is reliable, valid, and highly predictive #CriticalPower #Performance

🚨NEW PAPER🚨 Markerless (Theia) vs marker-based 🎥3D mocap for sprinting 🏃‍♂️: comparison by @SimonCrespeau &al @JSportsSci Contrasted results, interesting discussion🧐. In short, markerless differs for several variables/conditions 50 free E-copies tandfonline.com/eprint/ZJP237T…

⏳🔬20 yrs ago📄 Sprint running energetics, a new approach by di Prampero et al. based on acceleration-time metrics 📊 Paved way for numerous applications around a better understanding of sprint performance and metrics✅ Full update in 2 recent papers👇📷 researchgate.net/publication/77…

Load-Velocity Profiling 🏃‍♂️‍➡️ Stop guessing and start giving athletes the exact load they need for their resisted sprints 🎯 Goal: see how load affects an athlete's sprint speed 👟 Task: sprint maximally at 3 different loads ✅ Result: a profile showing max velocity (predicted…

📢 Thanks to everyone who’s completed our AEL survey! We’re still collecting insights from S&C practitioners on how AEL is used to develop power in sport 👇 🌍 In: English, Français, Español, Português, Italiano 🔗 bit.ly/44nLPLp 🌍 中文: 🔗 bit.ly/4lIbKEI

📘 L’ABC de la préparation physique du Rugby à 7, l’ouvrage référence pour optimiser vos perfs 💪🏉 Vous l’avez commandé ?🔥 Aujourd’hui, zoom sur 4 auteurs de l’ouvrage qui partagent leur expérience du haut niveau : @jb_morin @GregoireMillet1 @oliviermaurelli et @AlexisPeeters

🚨NEW STUDY🚨 Muscle activity during sprinting: effect of resistance and speed for various muscle groups in elite athletes 🎯🏃‍♀️🏃‍♂️ Very complete paper by Robin Macchi & al. in our FULGUR sprint project pubmed.ncbi.nlm.nih.gov/40020195/

🚨NOUVEAU PODCAST🚨 Force, la vitesse, Préparation physique 🏋️‍♀️🦶🦵 pour courir vite, et/ou longtemps, La totale - 2h sur toutes les plateformes... 🎥🎧🏃‍♂️🧑🏻‍💻📺🤝🔗 PODCAST 1000% : COMMENT DEVELOPPER VOTRE VITESSE : ENTRAINEMENT ET TRAVA... youtu.be/MBpejjosZoQ?si… via @YouTube

🚨NEW📄🚨 Foot strengthening protocol 🦶🏋️‍♀️ ⚡️= ⬆️foot MTP flexion strength, muscle volume and some sprint/jump/COD perf and mechanics ✅ in high-level athletes 🧐🧩 All exercises, RCT program and details, Open Access @PLOSONE 🎁 👏@r_tourillon &al: journals.plos.org/plosone/articl…

The question is not if someone can get faster, but how. Almost everyone can get faster if the quantity and quality of developmental work is significant and the speed coach is competent. @jb_morin sportsmith.co/articles/what-… via @SportsmithHQ

Hands-on and applied learning with some of the best in the field This Friday, June 27, we’re headed to the Intuit Dome Performance Center (home of the LA Clippers) for real-world and real-time coaching. Presentations won’t just be talked about, they’ll be tried, felt, and…