Tyler Collings

New research on OpenCap validity and reliability compared to optical motion capture from @YuriLimaPT In this study, we focused on tasks relevant to injury & performance testing. Findings in the thread ⬇️ Full article link: doi.org/10.1080/026404… #markerless #mocap

📈 Think high EMG = better glute gains? Think again 🧠 This study shows EMG activity doesn’t always match force output —more activation doesn’t necessarily mean more strength ⏰ No time to read the full paper? ✅ We broke it down into a 5-minute read physio.network/EMG-study

@GregLehman @gerdy_mac @MBourne5 Agree Greg. This study came more from the question of whether a new method (modeling) provides a different interpretation to the traditional approach (EMG). Anyone who knows the theory won’t be surprised by the answer..

@gerdy_mac @TylerCollings3 @MBourne5 I love the study but to be fair we can’t say the modelling approach is the gold standard. Both of these are currently surrogates for muscle hypertrophy

Poor agreement between EMG based ranking of exercises and gluteal forces ranked exercises. This is *exactly* why we shouldn't use EMG amplitude as our sole/main measure of guaging how effective an exercise is. Great work @TylerCollings3 @MBourne5 pubmed.ncbi.nlm.nih.gov/40263750/

Clinical gold! Thanks @alisongrimaldi

⚽🤕 Interesting day at the @BarclaysWSL medical conference

PhD scholarship alert: Sprint running biomechanics (Edith Cowan University, Australia) Interested in understanding how fatigue affects sprint running mechanics and injury risk: a question relevant to both modern sports performance and understanding our evolutionary past? 1/5

"Time-course changes in lower limb strength, vertical jump metrics and their relationship with patient reported outcomes following anterior cruciate ligament reconstruction" esskajournals.onlinelibrary.wiley.com/doi/full/10.10…

@GregLehman Through self reported glute burn during pilot testing!

@TylerCollings3 But how did you know? Just kidding ;)

@TylerCollings3 I just noticed that in your Glute force paper the exercises were predominantly unilateral. Was there a reason for that or just accidental?

@lahti_johan I think the key is starting with what we care about measuring and how we intend to use that info to inform decisions. If hip mobility (or any construct) is something we deem important—based on performance relevance, injury risk, etc.—then we should aim to measure it directly...

Why 'functional training' is still ill-defined. Look up the history of the word 'upmost'. In 1979 this wasn't a word. It has become one (it gets a gig in most dictionaries) because muppets, who never read, mis-heard utmost and started their own word. 1/n

Exercises targeting the gluteus medius should likely involve direct hip abduction or include a component of having to control and stabilize the pelvis in weight bearing. Shown are a handful of options that can be used for training or rehab purposes. 🧵

Some excellent work on the way from Jinyun Cai. Does targeted muscle strengthening reduce ACL loading during dynamic tasks? ✔8 week training intervention ✔Reactive sidestepping & single-leg landings ✔EMG-informed neuromusculoskeletal modelling ✔Muscles personalized with MRI

@GregLehman @avigotsky I agree - from the point of view of external moments, there may be some ‘hidden’ coactivation to compress the spine, oppose posterior shear, or maybe create a posterior pelvic tilt moment? - but surely can’t be similar to a loaded trunk flexion movement

@TylerCollings3 @avigotsky When I look at the squat, the deadlift, pull-up or bench press I just don't see an external extension moment where the rectus abdominis needs to work. I have trouble seeing how these exercises can replace traditional anterior trunk training.

Would biomechanical models based on opensim be able to estimate muscle forces in tasks where there may not be a strong opposing moment? Like rectus abdominis or oblique force during a squat or other lift @TylerCollings3 @avigotsky is this a case for EMG?

@GregLehman @avigotsky Seen any good EMG studies for those exercise? May need surface + fine wire to get the full picture?

@TylerCollings3 @avigotsky Ya, I think that's what I meant. I'm not convinced that traditional lifts really work the anterior core. It's quite popular to say people don't need direct core work and they can get it with squats and deadlifts but I'm not convinced.

@RiccardoRambo @MBourne5 @MarkBennett07 Yes - or atleast our best estimate of it

@MBourne5 @MarkBennett07 @TylerCollings3 Maybe an idiot question, but I want to be sure: Is peak muscle force the proportion of force generated by a muscle in a given exercise with a given load?

Ranking gluteal exercises based on EMG amplitudes provides very different interpretation than rankings based on muscle forces! Excellent talk from @TylerCollings3.

🦵 Can targeting specific muscles really help prevent ACL tears? 🤔 While promising, it's no perfect solution—ACL injury prevention is complex! 🍿 Learn ACL injury risk and prevention in our new Masterclass with Dr. @MBourne5 and @TylerCollings3 🔗 physio.network/ACLRisk

NEWS: NBA is launching a league-wide biomechanics program sportsbusinessjournal.com/Articles/2025/… via @sbj @QualisysMocap @breakawaydata @BertecHQ @P3sportscience @theiamarkerless @ZachLowe_NBA

💡 @MBourne5 and @TylerCollings3 Teach: Mastering ACL Injury: From Incidence to Injury Prevention ⁠⁠ ⏳ Coming soon to Masterclass!⁠ ⁠ 🤩 Did you know that we have 67+ Masterclasses in our library?⁠ ⁠⁠ 🚀 Try Masterclass for FREE for 7 days: 🔗 physio.network/MasterclassFre…