Thanks to the big man @devlarratt for chatting with me and helping me to better understand this sport. To see the whole interview with Devon, follow this link: th-cam.com/video/U4e1gmPqhVw/w-d-xo.html.
Force in arm break To find max shear stress we must find the portion of the cylinder which has the least favourable ratio between the inner diameter and outer diameter of the humerus. Pedrazzini at al examined cadaveric sections of 5 humeri.11 They showed lower bone mineral density in the distal third of the humerus. They also hypothesise that at the distal third of the humerus the ratio between the outer and inner diameter of the bone is less than in other areas of the bone, thus maximising the denominator in the above equation. This fact makes it most susceptible to fracture at this point due to shear stress. This hypothesis supports fracture patterns described in the literature. Kruczynski et al. used commuted tomography of a right humeral bone to establish a virtual three-dimensional model of a humerus made from aluminium as it has a similar strength properties to human bone (Youngs modulus = 0.675 MPa, Poisson ratio v = 0.33). They found that stress was maximal at 115 mm above the elbow joint on the posteromedial aspect of the bone. Stress distribution is typical for torsional loading and the fracture line propagates at 45° to the long axis of the bone resulting in a spiral pattern fracture.12 It is noted however that this is considering that the strain is purely torsional however it is noted in reality there is also a bending moment created by the competitors humeral head stabilisers and shoulder adductors in response to the opposing force as well as axial compression of the humerus. These biomechanical factors highlight the reasons why the humerus fails in a particular way in the setting of arm wrestling i.e. a spiral fracture at the distal third of the humerus with or without a butterfly fragment. Considering a pushing force of 20 kg (200 N), and a forearm 0.4 m long, there would be 80Nm of force acting upon the humerus. Kruczynski et al. calculated a force of 50-71Nm as causing
Studies of torsional stress fractures from pitching in baseball and all hand analytics programs for throwing sports are missing a massive data set from 70 years of professional armwrestling. 23 published medical studies and reviews of over 400 humerus fractures from armwrestling providencorrelation of injuries to throwing sports, including MLB pitchers. Each study reveals one fact, these are fractures are unique to armwrestling and a few throwing sports. throwing sports. Axiomazation of armwrestling biomechanics for development of safety training, instructional course development reveals 70 years of missing data sets from Professional ArmSports missing from every medical review of torsional stress fractures of the humerus, 100’s of grip strength studies, 24 medical studies since 1977 dozens of compiled hand studies that will skew the results and conclusions , revealing correlation of injuries with MLB pitchers, requiring study of intrinsic knowledge of armwrestlers to prove axioms and develop targeted studies for sports with requirements of hand application study and medical correlation of data harvest needed for new axioms created. Fractures of the humeral shaft in various throwing sports is a well recognized clinical entity. The specific etiology remains uncertain. Competitors engaged in Indian and/or armwrestling(wrist wrestling), a sport receiving increased interest, also are known to sustain humeral fractures. It is thought that these particular fractures are the result of bending moment, axial compression, and torsional forces applied to the humerus. The position of the arm during the match appears to be critical in determining the fracture pattern and location. Arm breaks in armwrestling- As to the nature of the break causing a butterfly fracture. This topic is not quite correctly identified in most studies. I believe the missing factor in these studies is an understanding of Armwrestling. Armwrestling is "The Ultimate Game of applied bio-physics". In No other sport do you apply force with your arm on a semi-fixed position. The forces are tremendous & an ever changing direction of force occurs within the hands. A gyroscope of power -Next the direction of force - You see Armwrestlers operate three basic lever systems Primary Lever(PL) hand. Secondary Lever (SL) the arm. Core Lever(CL) the body. With these three basic systems we have over 80 effective “forms” or characters. Once a match begins, players create a “rigid frame” with the PL & SL which is powered by your CL. Armwrestlers retrain muscles practicing Coactivation, with biceps/triceps working at maximum output for the endurance of the match. Knowledge of coactivation factors retrain these muscle groups to work maximum power at the same time, is missing from the medical studies. Remember it only looks like force is side to side. Armwrestling is a three dimensional game, changing the the direction of force is the essence of the game. In summary, Theory- Muscle spindles signal information about the length and velocity of a muscle Golgi tendon organs signal information about the load or force applied to a muscle- The signals are interrupted at the snap,release of a baseball when the pitcher throws and as that signal happens, it repeats it self,causing a “snap” just like cracking a whip. These signals reverse muscle action, while humerus is rotating & muscle reaction causes reverse rotational torque on the humerus causing a stress fracture. when the pitcher releases ball is when the injuries occur. A stress fracture of the humerus from torsional rotation during an armwrestling match is devastating. Armwrestlers can transfer a force of 98% of their mass to to their hand when in motion & if a break occurs, it have the player’s force applied too. We also retrain both muscle groups for the challenge of Armsports. The same way a major league pitcher must retrains these two muscle to work at the same time, to transfer of power to his fingertips as they release the ball. Theory In armwrestling this same muscle reaction happens when humerus begins to crack, the reverse action of both the bicep & tricep (in both cases) already working at max force against each other, cause the "explosive " breaks seen only in armwrestling. The floating " butterfly fracture" is directly caused by this muscle reaction. Theory - Golgi tendon organ signal disruption seemingly the common link to both Sports. Is this signal be doubled at the release when a pitcher grows? My theory is yes. Question- Could use of a resistance device prevent torsional stress fractures , by dampening the the torsional stress rotation of the humerus for a Major League Baseball pitchers, Jai alai players? It could be a resistance type band or a compression sleeve design or perhaps a TENS electronic device, the use of which would control/delay significance of muscle reversal. Missing data sets from baseball pitching analytics confirmed from armwrestling safety study- Armwrestling is Table-Judo, this is a study of the science of the hand. The knowledge of ArmSports exists in “dark data”. We have the strongest hands in the world. This is a known Axiom among telling you this is a fact. Our sport needs to harvest data and create a basic “combine event”, that is focused multiple hand/arm/body strength challenges. A study of armwrestlers will prove these facts & all of this to be designed to help every athlete and University. This study would provide data and insight into every sport using your hand, strength training, robotic applications, prosthetic devices advancement. There is a direct correlation to linear stress fractures from “pitching” sports, primarily baseball & various Indian throwing games.
Benefits of coactivation in Armwrestling/ With proper technique you will utilize every muscle group in your body. To maximize safety & power you must first learn to retrain these muscle groups to work differently, together. So if we study the muscles, we must emphasize anogist & anataginist “sets” & how to retrain them. This stabilization mechanism is also important for unexpected loads impeded on the joint, allowing the muscles to quickly coactivate and provide stability to the joint, providing a higher level of safety. Muscle coactivation occurs when agonist and antagonist muscles (or synergist muscles) surrounding a joint contract simultaneously to provide joint stability. It is also known as muscle cocontraction, since two muscle groups are contracting at the same time. It literally provides a torque dampening effect to your elbow from opponent’s force. It provides joint stabilization, simply you don’t want your elbow joint to be opened by opponent’s force. Muscle coactivation allows muscle groups surrounding a joint to become more stable. This is due to both muscles (or sets of muscles) contracting at the same time, which produces compression on the joint. The joint is able to become stiffer and more stable due to this action. Isn’t this the goal of armwrestlers? For example, when the biceps and the triceps coactivate, the elbow becomes more stable. Levers are rigid & transfer of power is lowered when lever flex/bends. So we can see coactivation helps to minimize power loss. With proper technique you use tricep and bicep for maximum power at the same time, this requires retraining your muscle groups. Armwrestling is sustained endurance at maximum output. Normal gym routines can never replace tabletime. This is not normal in other sports, with the exception of throwing sports, like Major League Baseball pitchers. You must not only retrain your muscles to work at the same time Armwrestling also requires you to train to do this at maximum effort for the entire duration of a match. This is why everyone will tell you only real Table time can prepare you to compete.
Another example of why Devon is miles above the rest as an icon of the sport. He has a very deep understanding and a great ability to articulate the complexity...
@@StevenRayW That's what he said, Devon is miles above the rest as an icon of the sport. Someone who knows what he is talking about (one of the best armwrestler in the world and heavy weight champion, while having anatomic knowledge regarding his discipline), he isn't "camera-shy" and is very articulate.
@@smokysmoka for context I know NOTHING (besides injuries) about the sport, and still know who Devon is and what he does, might not the the best performer right now and his golden era could be long gone, and yet some outsiders like me still recognize him
@@smokysmoka yea but those dude can barely speak the #1 language in the world.... Actually Levan can't at all... that said, I watch anything with Denis and Levan though. Ermes not so much, he the only one so far to crack Levan in YEARS, only reason he's know pretty much. Can he do it again? I doubt it... Maybe though, would be cool if he pulled it off
Arm wrestling at those levels is not only an incredible feat of strength, it's an incredible feat of structural integrity. Some of the techniques used is literally using your skeleton in ways that would cause a mere mortal to get fractures of all kinds. There is a reason why in Swedish it is not referred to as Arm Wrestling, But as Arm Breaking. "Test Your Frame" as armwrestlers sometimes say
@@ezeke959 no, there are ways to use your frame that are not 'bad form'. Shoulder fully committed in a hook puts most of the train on shoulder connective tissues, rotator cuff etc. It's not recommended for beginners but can be used safely if you condition that part of your body for years.
Devon is an awesome human being, beyond his physical abilities. I'm sure you had fun interviewing him. There is none better to describe the thought process leading to the mechanics involved, with the injuries you treat
Aaw man Devon on your show is making a tough day much better. He's the reason i fell in love with the sport. Wheather people like him or not, nobody can deny he is responsible for a large chunk of the sports popularity. Awesome video doc!
@@rhino6139 hahaha 🤣 there's no way he's having a tougher day than I am!!! Anyone care to hear about it lol!!! JK it's ok I'm done working so I'm good thx tho 😀
You couldn't have picked a better guy to interview. Devon is not only the most recognizable face in AW, but very insightful and passionate about the sport.
Happy to see a well-researched and organized video from a medical professional explaining the different aspects of AW training and safety; very beginner friendly and even insightful to someone like me who's been arm-wrestling for a few years and didn't know much about the load-bearing properties of bones and how vector-dependent they are.
With Devons arm getting longer , we've actually know this for a while now. When digging up bones of people from the Middle ages (Long Bow era) , they found everyone from Kids to Adults , with over grown Bones in the Left arm (the bow holding arm) and marks in the Bones where the Tendons (i think) would anchor into the Bone and make these distinctive marks. So after watching a lot of those Doco's , seeing Devons arm grow isnt that shocking to me , but seeing longbowmen's skeletons (8 or 9 year ago) with massive over sized arm bones was shocking and awesome at the same time. The human body is so wack , its awesome. Great Vid again Doc 👍
Definitely a cool video, seeing all this information specific to ArmWrestling However, what you are talking about with the people from the Middle Ages, I don’t think it’s a one to one comparison to what’s happening with Devon. At least more in depth study would need to be done But with the Long Bow users, the reason longer left arm is prevalent could very likely be the result of evolution, not direct stress. Over generations, long left arm became a common trait through breeding, the way any valuable adaptation tends to rise in occurrence. Because the bow holding arm wouldn’t be getting the same stress as the arrow pulling arm. So theoretically the right would be the one adapting to severe strain. Additionally, the strains are no where near as powerful, or for as long of duration as the forces / stress from ArmWrestling and AW training would give to the arm So, I don’t think the long arm adapted due to stress of firing arrows, rather that it is more beneficial to have a longer bow-holding lever, and that adaptation rose over time
I'm almost certain it's the draw arm and not the left bracing arm of Archers that was disproportionately large. It was law in England you must practice. I don't believe it's an evolutionary adaption at all. From what I read it's an adaption that occurs in one lifetime from repetitive use. Like Tennis players, or Blacksmiths. The draw weight of some military bows was significantly larger than seen in modern sports bows. You'd have to use a different technique to even draw them - they placed significant force upon the draw arm leading to bone remodeling through what is known as Wolf's law and of course hypertrophy of the used muscles.
@Day-ZDuke definitely was the pulling arm growing substantially bigger specially since 9 year olds were crankng 250lb bows with ease where's you average guy today can't even draw that heavy of a bow saw first hand hundreds of people all day at a medieval festival try to draw a 200lb bow but struggle but only a small percentage of the bigger guys could so definitely back in those times drawing a bow everyday for his training would make the body adapt to that stress
Your draw strength comes from the shoulder , but your bracing is what has to hold the bow steady . I thought it would have been the other way too , but what the people digging them up and studying the bodies, they all talked about the Brace arm , and draw shoulder having tell tale signs of large muscle anchors. Ive been trying to find the Doco about it (i'll keep looking). Could only find a Vid of an old guy showing how he's body has changed shooting a bow for most his life.
Another great topic! Thanks for blurring the arm fracturing of the bodyguard, I've been able to see all sorts of gruesome injuries in my line of work but seeing fractures like that happen is hard to handle.
Being former Canadian Special Forces, and now an arm wrestling veteran, Devon could literally be a professor on the body and how to destroy it section by section 😍
He was part of Canada’s Joint Task Force 2 which is an elite Tier 1 special operations force of the Canadian Armed Forces. Only the best of the best are allowed in.
Any doctor willing to sit down and have a conversation with Devon and take the time to understand the addicting sport of Arm Wrestling gets a thumbs up in my book..thank you Dr for shedding some light on the sport we love so much and hanging out with the character that is Devon!!! love the interview. Thank you, thank you !!! 👊🏼 ❤
This is by far one the best detailed video about arm wrestling. Thanks for explaining how to grow your tendons and ligaments, moving and pumping it up with low intensity, gonna do it every week 2 times!
Devon is a very entertaining player, he is a colourful person. Good quality is that he is talkitive. He is both physically and Mentally strong. He engaged his opponent in different talks, like taunt them, joke with them, engages them with eye contact. And I saw in his each fight he always came to win , and he never give up. Wish those complement reaches to Devon. I just start watching arm wrestling. And I was impressed him , when he beat Braun. That was not just a match , but more than that. As Devon use all his ability, technical ability and physical strength their are definite chance he can injured himself. Love from Pakistan Devon , you are 45+ and fighting like he is still young player, is a thing which attract ppl , to watch his matches. Good job Devon , keep it up man
Man, you are killing it with your content with Devon. Something so simple as arm wrestling broken down into the dynamics of Davons masterful training with your specialized knowledge on the human organism. Your the man, Love your work. Devons a good guy
Really great insight into tendons, thank you. I'm currently rehabbing my elbow after overdoing it with pull ups/climbing. The whole idea of keeping the tendon stimulated during rest periods without overloading the tendon is really useful to know.
This was a great series. i would imagine alot of your viewers are appreciative of your take on someone as superhuman as he is and i would love to see more in the future. youre really putting out the content. you may have went to school to be a doctor but you are a natural born entertainer.
This dudes ability to understand the sport and techniques shown by Devon and translate them into easily understood anatomical descriptions is impeccable... plus he has funny edits... well done.
This is a pretty amazing arm wrestling video on many levels. Understanding the anatomy, understanding how to lessen risk of injury, understanding training, and understanding movement on the table as a spectator. Devon is one of modern arm wrestling's greatest assets.
Excellent work on this video, Doc. Devon has shown up in several of my video feeds recently and he’s definitely an impressive guy. What I didn’t know is how smart about his training he is.
fantastic. Devon is the man. great review of anatomy and function. if a casual viewer watch's any of Devons Matchs. beyond simple power. technical expertise and the power of his voice is a hard combo to beat
Well I came here because everything Devon pops up in my feed. That was a great interview, and now I found someone else to follow also!! Very informative video can't wait to see more of your content!
I've watched a few of Devon's matches, cool to see him here shortly after finding this channel. Really like what you're doing here Doc! Particularly a fan of your supercross/motocross videos. Hope to see more of them!
It's easy to compliment Devon because he deserves it, but Dr. Raynor, you deserve a lot of credit also for the way that you interviewed him and the respect that you gave this great athlete. My respect to you sir.
Awesome colaberation between these two, just the kind of relaxed and informative conversation that only comes from people who have experience and knowledge and a desire to learn from each other.
This is an amazing lecture with great data, commentary, visuals and conversation. Wouldn’t be the same without the talented people who were involved. Please go deeper into profusion and it’s importance regarding health and recovery for both acute and chronic conditions. Thank you for such a great presentation. Keep up the great work!!
This was awesome! Fantastic deep-dive into the mechanics of the sport. Devon trains a lot differently than most other guys at his level, to hear a Dr's perspective on it great.
That was super interesting. I learned a lot. It makes you realise just how much goes into training for armwrestling at the highest level. Understanding his body, muscle groups and leverage properly is clearly a huge factor.
@@jwilsonhandmadeknives2760Hamed is talking about recovery. light & high reps, 'alot of motion' is exactly what Devon means for fluid movement in connective tissue recovery vs the "very heavy, static contraction" used in regular arm wrestling training
Absolutely amazing video. The sport is an underground community & there has always been a shortage of direct, descriptive visualizations of the muscle groups involved. And especially the injuries.
Awesome vid! would love to see more videos like this with other sports/martial arts. I'm a climber so I would be super interested in the kinds of stresses us climbers see with our fingers and hands.
What can I say... this is an awesome set of explanations.. I discovered you when you covered Ken Roczen's injuries a while ago and to see you cover another of my idols in Devon Larratt or should we all start to say Professor Larratt (love it) is just super exciting. Thank you!
This is an amazing video. From what I’ve learned from watching Devon train and talk arm wrestling is sooo much more than just brute strength. It’s a thinking man’s game and having the full knowledge of anatomical structures of the Armwrestling movement. Thk u for the content….
It definitely is. Arm wrestling is a unique sport where most arm wrestlers have an instinctual awareness of how use their strength effectively with minimal injury to the muscles, bones, ligaments, and tendons.
Is it? I mean in the end, at the pro level, it's not like there's some inherent skill aspect coming into play, anyone can reach the necessary skill level with training. Optimizing the strenght of his arm due training, that's what it comes down to in the end. That's why Devon didn't stand a chance against Levan. All his experience ultimately meant nothing against someone with more arm strenght.
@@BamBamGT1hats because the strength difference is absolutely drastic. Your example is ignorant and doesnt prove the original commenter wrong. Thats like saying "size matters in fighting" and having a little girl try to beat up Dewayne Johnson. When in reality size doesn't matter until it hits a certain point. But you can definitely beat someone who only has 50lbs on you. Not 200lbs. I fought my ex manager who was 2 inches taller and 40lbs heavier than me. Using drastic examples to prove a point is disingenuous
@@matt59fire is it drastic? Devon is the proof that looks are deceiving. Beating many people that looked stronger. He's trained his various muscles to the point he beats people that look stronger. There's no "secret arm wrestle skill" that only he has unlocked.
@@BamBamGT1 You completely missread what i said and came from a different direction of the argument that i wasnt bringing up. Also Devon is massive. Levan is the biggest and strongest he has fought. He is pushing a little over 400lbs bodyweight. Fighting people bigger than you is different than fighting people way bigger than you. Its like you dont understand the concept
Excellent video! Especially the last 3-5 minutes, the way you talk, present and truly display that you care and respect the sport, the people and the ability of movement itself was really touching.
I really enjoyed this! This was my first video of your but I really enjoy having an expert dissecting something that seems so simple but to the trained eye, is incredibly complex. Thank you!
Very cool vid, Doc. Devon is the face of the sport. It’s a shame social media wasn’t around earlier in his career. Devon may never be able to beat Levan, but his legacy is secure.
I managed to break my arm while armwrestling in class in my early 20s, i had bad positioning as we were sitting next to one another rather than opposite. It was a very surreal moment because i basically have no strength in my arms but still managed to break a bone... Just as i was starting to do a push my arm broke. I had never broken anything before or since that!😅
@@BrandonTheKralik It wasn't too painful, i went to the teachers office and asked for an ambulance as none of us had a car, the next day i had to get surgery and had a titanium plate installed. The surgeon said i had very thick bones so i didn't have a calcium deficit or anything. All ended well, but if i had watched this video i probably wouln't have broken my arm...
Hi Dr. Chris! I'm a Dr. Chris (FM) as well! I stumbled upon your channel because I'm a huge fan of Devon and the world of arm wrestling. Your video on him is very intricate and educational. Hence, I subbed! Keep making awesome videos, Doc!
I met Devon twice at practice. I was talking to a pilot who would air drop him. Devon made a $200 bet with everyone he could do 1000 pushups in one set no stopping. Everyone took the bet and Devon walked out with over $6000
Thank you for that, it was extremely well done. I was the first certified personal trainer in the US and I wrote the first accreditation course for ACSM in 1984 and when I train people online, I STILL look for ways to corroborate information I give newer clients. In this case, I was looking for information on tendon damage and recovery for a client who injured his biceps tendon while rock climbing, and this video not only substantiated the information I'd already given him, but I was able to time stamp the relevant portions of the video. Well done,I think I'll subscribe!
Thanks to the big man @devlarratt for chatting with me and helping me to better understand this sport. To see the whole interview with Devon, follow this link:
th-cam.com/video/U4e1gmPqhVw/w-d-xo.html.
done
The podcast goes live tomorrow same time as this video. ⬆️
Force in arm break
To find max shear stress we must find the portion of the cylinder which has the least favourable ratio between the inner diameter and outer diameter of the humerus. Pedrazzini at al examined cadaveric sections of 5 humeri.11 They showed lower bone mineral density in the distal third of the humerus.
They also hypothesise that at the distal third of the humerus the ratio between the outer and inner diameter of the bone is less than in other areas of the bone, thus maximising the denominator in the above equation.
This fact makes it most susceptible to fracture at this point due to shear stress. This hypothesis supports fracture patterns described in the literature.
Kruczynski et al. used commuted tomography of a right humeral bone to establish a virtual three-dimensional model of a humerus made from aluminium as it has a similar strength properties to human bone (Youngs modulus = 0.675 MPa, Poisson ratio v = 0.33). They found that stress was maximal at 115 mm above the elbow joint on the posteromedial aspect of the bone. Stress distribution is typical for torsional loading and the fracture line propagates at 45° to the long axis of the bone resulting in a spiral pattern fracture.12 It is noted however that this is considering that the strain is purely torsional however it is noted in reality there is also a bending moment created by the competitors humeral head stabilisers and shoulder adductors in response to the opposing force as well as axial compression of the humerus.
These biomechanical factors highlight the reasons why the humerus fails in a particular way in the setting of arm wrestling i.e. a spiral fracture at the distal third of the humerus with or without a butterfly fragment. Considering a pushing force of 20 kg (200 N), and a forearm 0.4 m long, there would be 80Nm of force acting upon the humerus. Kruczynski et al. calculated a force of 50-71Nm as causing
Studies of torsional stress fractures from pitching in baseball and all hand analytics programs for throwing sports are missing a massive data set from 70 years of professional armwrestling.
23 published medical studies and reviews of over 400 humerus fractures from armwrestling providencorrelation of injuries to throwing sports, including MLB pitchers.
Each study reveals one fact, these are fractures are unique to armwrestling and a few throwing sports. throwing sports.
Axiomazation of armwrestling biomechanics for development of safety training, instructional course development reveals 70 years of missing data sets from Professional ArmSports missing from every medical review of torsional stress fractures of the humerus, 100’s of grip strength studies, 24 medical studies since 1977 dozens of compiled hand studies that will skew the results and conclusions , revealing correlation of injuries with MLB pitchers, requiring study of intrinsic knowledge of armwrestlers to prove axioms and develop targeted studies for sports with requirements of hand application study and medical correlation of data harvest needed for new axioms created.
Fractures of the humeral shaft in various throwing sports is a well recognized clinical entity. The specific etiology remains uncertain. Competitors engaged in Indian and/or armwrestling(wrist wrestling), a sport receiving increased interest, also are known to sustain humeral fractures.
It is thought that these particular fractures are the result of bending moment, axial compression, and torsional forces applied to the humerus. The position of the arm during the match appears to be critical in determining the fracture pattern and location.
Arm breaks in armwrestling-
As to the nature of the break causing a butterfly fracture. This topic is not quite correctly identified in most studies. I believe the missing factor in these studies is an understanding of Armwrestling.
Armwrestling is "The Ultimate Game of applied bio-physics". In No other sport do you apply force with your arm on a semi-fixed position. The forces are tremendous & an ever changing direction of force occurs within the hands.
A gyroscope of power -Next the direction of force - You see Armwrestlers operate three basic lever systems Primary Lever(PL) hand. Secondary Lever (SL) the arm. Core Lever(CL) the body. With these three basic systems we have over 80 effective “forms” or characters. Once a match begins, players create a “rigid frame” with the PL & SL which is powered by your CL.
Armwrestlers retrain muscles practicing Coactivation, with biceps/triceps working at maximum output for the endurance of the match. Knowledge of coactivation factors retrain these muscle groups to work maximum power at the same time, is missing from the medical studies. Remember it only looks like force is side to side.
Armwrestling is a three dimensional game, changing the the direction of force is the essence of the game.
In summary,
Theory-
Muscle spindles signal information about the length and velocity of a muscle
Golgi tendon organs signal information about the load or force applied to a muscle- The signals are interrupted at the snap,release of a baseball when the pitcher throws and as that signal happens, it repeats it self,causing a “snap” just like cracking a whip.
These signals reverse muscle action, while humerus is rotating & muscle reaction causes reverse rotational torque on the humerus causing a stress fracture. when the pitcher releases ball is when the injuries occur.
A stress fracture of the humerus from torsional rotation during an armwrestling match is devastating.
Armwrestlers can transfer a force of 98% of their mass to to their hand when in motion & if a break occurs, it have the player’s force applied too.
We also retrain both muscle groups for the challenge of Armsports. The same way a major league pitcher must retrains these two muscle to work at the same time, to transfer of power to his fingertips as they release the ball.
Theory
In armwrestling this same muscle reaction happens when humerus begins to crack, the reverse action of both the bicep & tricep (in both cases) already working at max force against each other, cause the "explosive " breaks seen only in armwrestling. The floating " butterfly fracture" is directly caused by this muscle reaction.
Theory - Golgi tendon organ signal disruption seemingly the common link to both Sports. Is this signal be doubled at the release when a pitcher grows? My theory is yes.
Question- Could use of a resistance device prevent torsional stress fractures , by dampening the the torsional stress rotation of the humerus for a Major League Baseball pitchers, Jai alai players? It could be a resistance type band or a compression sleeve design or perhaps a TENS electronic device, the use of which would control/delay significance of muscle reversal.
Missing data sets from baseball pitching analytics confirmed from armwrestling safety study-
Armwrestling is Table-Judo, this is a study of the science of the hand. The knowledge of ArmSports exists in “dark data”. We have the strongest hands in the world.
This is a known Axiom among telling you this is a fact. Our sport needs to harvest data and create a basic “combine event”, that is focused multiple hand/arm/body strength challenges.
A study of armwrestlers will prove these facts & all of this to be designed to help every athlete and University. This study would provide data and insight into every sport using your hand, strength training, robotic applications, prosthetic devices advancement.
There is a direct correlation to linear stress fractures from “pitching” sports, primarily baseball & various Indian throwing games.
Benefits of coactivation in Armwrestling/
With proper technique you will utilize every muscle group in your body.
To maximize safety & power you must first learn to retrain these muscle groups to work differently, together.
So if we study the muscles, we must emphasize anogist & anataginist “sets” & how to retrain them.
This stabilization mechanism is also important for unexpected loads impeded on the joint, allowing the muscles to quickly coactivate and provide stability to the joint, providing a higher level of safety.
Muscle coactivation occurs when agonist and antagonist muscles (or synergist muscles) surrounding a joint contract simultaneously to provide joint stability.
It is also known as muscle cocontraction, since two muscle groups are contracting at the same time.
It literally provides a torque dampening effect to your elbow from opponent’s force.
It provides joint stabilization, simply you don’t want your elbow joint to be opened by opponent’s force.
Muscle coactivation allows muscle groups surrounding a joint to become more stable.
This is due to both muscles (or sets of muscles) contracting at the same time, which produces compression on the joint.
The joint is able to become stiffer and more stable due to this action. Isn’t this the goal of armwrestlers?
For example, when the biceps and the triceps coactivate, the elbow becomes more stable.
Levers are rigid & transfer of power is lowered when lever flex/bends.
So we can see coactivation helps to minimize power loss.
With proper technique you use tricep and bicep for maximum power at the same time, this requires retraining your muscle groups.
Armwrestling is sustained endurance at maximum output. Normal gym routines can never replace tabletime.
This is not normal in other sports, with the exception of throwing sports, like Major League Baseball pitchers.
You must not only retrain your muscles to
work at the same time Armwrestling also requires you to train to do this at maximum effort for the entire duration of a match.
This is why everyone will tell you only real Table time can prepare you to compete.
This is by far the most comprehensive and professional explanation of the muscles used in Armwrestling I've ever seen.
Devon is the Yujiro Hanma of arm wrestling.
Some would say Yujiro Handma
Agreed! Soooo in depth
The video had a reference to Family Guy! 😂😂 Most professional you've seen? Lol just messin
@@raymundozarate Stahp it xD
Another example of why Devon is miles above the rest as an icon of the sport. He has a very deep understanding and a great ability to articulate the complexity...
John brzenk...
Well put mate
There are other who know just as much if not more about armwrestling. It's just that they are either more camera-shy OR unable to speak English well.
@@emilianodavid7419 The table IQ of Devon is higher
@@StevenRayW That's what he said, Devon is miles above the rest as an icon of the sport. Someone who knows what he is talking about (one of the best armwrestler in the world and heavy weight champion, while having anatomic knowledge regarding his discipline), he isn't "camera-shy" and is very articulate.
The fact you cover 40k and arm wrestling is a dream come true for me and like 5 people, we appreciate it!
I am one of those 5.
Number three reporting
Count me in
That makes all 5 of us!
40k…that’s a lot of arm wrestling;)
You are going to get a ton of views on this one! Devon is the most hyped guy from arm wrestling and rightly so. Can't wait to see this one.
Levan, Denis, Ermes,
@@smokysmoka Devon is definitely ahead of Denis at this point lol.
@@smokysmoka If it's purely about hype, then Devon is far and away the brightest star in world armwrestling. It's not even close.
@@smokysmoka for context I know NOTHING (besides injuries) about the sport, and still know who Devon is and what he does, might not the the best performer right now and his golden era could be long gone, and yet some outsiders like me still recognize him
@@smokysmoka yea but those dude can barely speak the #1 language in the world.... Actually Levan can't at all...
that said, I watch anything with Denis and Levan though. Ermes not so much, he the only one so far to crack Levan in YEARS, only reason he's know pretty much. Can he do it again? I doubt it... Maybe though, would be cool if he pulled it off
Arm wrestling at those levels is not only an incredible feat of strength, it's an incredible feat of structural integrity.
Some of the techniques used is literally using your skeleton in ways that would cause a mere mortal to get fractures of all kinds.
There is a reason why in Swedish it is not referred to as Arm Wrestling, But as Arm Breaking.
"Test Your Frame" as armwrestlers sometimes say
That's called arm wrestling with bad form
@@ezeke959 no, there are ways to use your frame that are not 'bad form'. Shoulder fully committed in a hook puts most of the train on shoulder connective tissues, rotator cuff etc. It's not recommended for beginners but can be used safely if you condition that part of your body for years.
@@ezeke959 Say that to Ermes vs Levan
Hahahah. Devon Larrat just gave away his secret in detail lol
@@rafaelb.m.4756 classic example. Ermes put all the stress into his shoulder and now has a sprain there. It didn't endanger his arm though.
Devon is an awesome human being, beyond his physical abilities.
I'm sure you had fun interviewing him.
There is none better to describe the thought process leading to the mechanics involved, with the injuries you treat
Aaw man Devon on your show is making a tough day much better. He's the reason i fell in love with the sport. Wheather people like him or not, nobody can deny he is responsible for a large chunk of the sports popularity. Awesome video doc!
Why is your day tough? Is everything ok?
@@sam_s_ You are a decent human being.
@@rhino6139 hahaha 🤣 there's no way he's having a tougher day than I am!!! Anyone care to hear about it lol!!! JK it's ok I'm done working so I'm good thx tho 😀
@@billyshupe5239go ahead bro, I'm ready to listen to your pain 🤝
You couldn't have picked a better guy to interview. Devon is not only the most recognizable face in AW, but very insightful and passionate about the sport.
a better guy huh! wow just wow!
Devon has been very generous with his time and knowledge for the betterment of the sport - very cool. 💪
Thank you for taking a deep look into our sport 😁
Happy to see a well-researched and organized video from a medical professional explaining the different aspects of AW training and safety; very beginner friendly and even insightful to someone like me who's been arm-wrestling for a few years and didn't know much about the load-bearing properties of bones and how vector-dependent they are.
With Devons arm getting longer , we've actually know this for a while now. When digging up bones of people from the Middle ages (Long Bow era) , they found everyone from Kids to Adults , with over grown Bones in the Left arm (the bow holding arm) and marks in the Bones where the Tendons (i think) would anchor into the Bone and make these distinctive marks.
So after watching a lot of those Doco's , seeing Devons arm grow isnt that shocking to me , but seeing longbowmen's skeletons (8 or 9 year ago) with massive over sized arm bones was shocking and awesome at the same time. The human body is so wack , its awesome.
Great Vid again Doc 👍
Definitely a cool video, seeing all this information specific to ArmWrestling
However, what you are talking about with the people from the Middle Ages, I don’t think it’s a one to one comparison to what’s happening with Devon. At least more in depth study would need to be done
But with the Long Bow users, the reason longer left arm is prevalent could very likely be the result of evolution, not direct stress. Over generations, long left arm became a common trait through breeding, the way any valuable adaptation tends to rise in occurrence.
Because the bow holding arm wouldn’t be getting the same stress as the arrow pulling arm. So theoretically the right would be the one adapting to severe strain. Additionally, the strains are no where near as powerful, or for as long of duration as the forces / stress from ArmWrestling and AW training would give to the arm
So, I don’t think the long arm adapted due to stress of firing arrows, rather that it is more beneficial to have a longer bow-holding lever, and that adaptation rose over time
I'm almost certain it's the draw arm and not the left bracing arm of Archers that was disproportionately large.
It was law in England you must practice. I don't believe it's an evolutionary adaption at all. From what I read it's an adaption that occurs in one lifetime from repetitive use. Like Tennis players, or Blacksmiths.
The draw weight of some military bows was significantly larger than seen in modern sports bows. You'd have to use a different technique to even draw them - they placed significant force upon the draw arm leading to bone remodeling through what is known as Wolf's law and of course hypertrophy of the used muscles.
@Day-ZDuke definitely was the pulling arm growing substantially bigger specially since 9 year olds were crankng 250lb bows with ease where's you average guy today can't even draw that heavy of a bow saw first hand hundreds of people all day at a medieval festival try to draw a 200lb bow but struggle but only a small percentage of the bigger guys could so definitely back in those times drawing a bow everyday for his training would make the body adapt to that stress
Your draw strength comes from the shoulder , but your bracing is what has to hold the bow steady . I thought it would have been the other way too , but what the people digging them up and studying the bodies, they all talked about the Brace arm , and draw shoulder having tell tale signs of large muscle anchors. Ive been trying to find the Doco about it (i'll keep looking). Could only find a Vid of an old guy showing how he's body has changed shooting a bow for most his life.
Another great topic! Thanks for blurring the arm fracturing of the bodyguard, I've been able to see all sorts of gruesome injuries in my line of work but seeing fractures like that happen is hard to handle.
Being former Canadian Special Forces, and now an arm wrestling veteran, Devon could literally be a professor on the body and how to destroy it section by section 😍
Sure.ask him about thor
He was part of Canada’s Joint Task Force 2 which is an elite Tier 1 special operations force of the Canadian Armed Forces. Only the best of the best are allowed in.
I LOOOVE to see Dr. Chris with Dr. Larratt. Both my heros. Hello from Slovakia
Any doctor willing to sit down and have a conversation with Devon and take the time to understand the addicting sport of Arm Wrestling gets a thumbs up in my book..thank you Dr for shedding some light on the sport we love so much and hanging out with the character that is Devon!!! love the interview. Thank you, thank you !!! 👊🏼 ❤
THIS!!! ^^^^
This is by far one the best detailed video about arm wrestling. Thanks for explaining how to grow your tendons and ligaments, moving and pumping it up with low intensity, gonna do it every week 2 times!
Pretty hyped for this. Recently discovered larratt and became an instant fan due to charisma alone
Devon is a very entertaining player, he is a colourful person. Good quality is that he is talkitive. He is both physically and Mentally strong. He engaged his opponent in different talks, like taunt them, joke with them, engages them with eye contact. And I saw in his each fight he always came to win , and he never give up. Wish those complement reaches to Devon. I just start watching arm wrestling. And I was impressed him , when he beat Braun. That was not just a match , but more than that. As Devon use all his ability, technical ability and physical strength their are definite chance he can injured himself. Love from Pakistan Devon , you are 45+ and fighting like he is still young player, is a thing which attract ppl , to watch his matches. Good job Devon , keep it up man
The man is a monster, the guy is an inspiration for all people, a living scientific experiment.
I've been following Devon for 4+ years now. Not once can I remember him being referred to as professor Larratt. But it makes sense
Man, you are killing it with your content with Devon. Something so simple as arm wrestling broken down into the dynamics of Davons masterful training with your specialized knowledge on the human organism. Your the man, Love your work. Devons a good guy
This video is incredible. So well written and planned. This needs views!!! Doc raynor absolute professional. God bless you!
Really great insight into tendons, thank you. I'm currently rehabbing my elbow after overdoing it with pull ups/climbing. The whole idea of keeping the tendon stimulated during rest periods without overloading the tendon is really useful to know.
Devin has some really good insights.
Light eccentrics
This was a great series. i would imagine alot of your viewers are appreciative of your take on someone as superhuman as he is and i would love to see more in the future. youre really putting out the content. you may have went to school to be a doctor but you are a natural born entertainer.
hey do you know which stremaer is that on 5;52
This dudes ability to understand the sport and techniques shown by Devon and translate them into easily understood anatomical descriptions is impeccable... plus he has funny edits... well done.
This is a pretty amazing arm wrestling video on many levels. Understanding the anatomy, understanding how to lessen risk of injury, understanding training, and understanding movement on the table as a spectator. Devon is one of modern arm wrestling's greatest assets.
Always love seeing two channels I follow get together and educate people.
This was a really good video. Good to see a Surgeons side of this sport.
Finally, a quality recommendation from TH-cam. Enjoyed this episode
Phenomenal video. The scientific and technical parts of arm wrestling getting the recognition they deserve
Love how in depth and technical this breakdown of arm wrestling is, nobody looks into it like this.
Excellent work on this video, Doc. Devon has shown up in several of my video feeds recently and he’s definitely an impressive guy. What I didn’t know is how smart about his training he is.
Wasn't expecting this video at all, love the crossover!
I am _so_ pleased you censored the actual breaking of bones! Thank-you!
fantastic. Devon is the man. great review of anatomy and function. if a casual viewer watch's any of Devons Matchs. beyond simple power. technical expertise and the power of his voice is a hard combo to beat
Devon is truly awesome! A legend. Thank you for medically explaining the mechanism of arm wrestling. I always wanted to know more. Great video. 👍
Well I came here because everything Devon pops up in my feed. That was a great interview, and now I found someone else to follow also!! Very informative video can't wait to see more of your content!
Dr. Chris and Casually Explained both dropping banger Armwrestling videos on the same day. Need more eyes on this awesome sport 🙏🏽
Really appreciate this video Dr. Raynor - and Devon's continued dedication to growing the sport! Well done!
Glad you enjoyed it! Greatly appreciate your generous contribution!
looking forward to this video!!!
Thanks for the fun video Doctor Chris. Keep churning out these awesome videos
Didn't know Devon would have ended up this channel but here we are
The algorithm always fails to recommend me channels like this one. This is so GOOD!
I've watched a few of Devon's matches, cool to see him here shortly after finding this channel. Really like what you're doing here Doc! Particularly a fan of your supercross/motocross videos. Hope to see more of them!
It's easy to compliment Devon because he deserves it, but Dr. Raynor, you deserve a lot of credit also for the way that you interviewed him and the respect that you gave this great athlete. My respect to you sir.
Devon has to be one of the most interesting humans on the planet!
Awesome colaberation between these two, just the kind of relaxed and informative conversation that only comes from people who have experience and knowledge and a desire to learn from each other.
This is an amazing lecture with great data, commentary, visuals and conversation. Wouldn’t be the same without the talented people who were involved. Please go deeper into profusion and it’s importance regarding health and recovery for both acute and chronic conditions. Thank you for such a great presentation. Keep up the great work!!
As an arm wrestler I appreciate the time you took to get this video uploaded. Great stuff
This was awesome! Fantastic deep-dive into the mechanics of the sport. Devon trains a lot differently than most other guys at his level, to hear a Dr's perspective on it great.
I was so surprised to see you interview Devon. I have followed him for a long time. This was a great video.
Great video! A minor correction, Devon tore his bicep muscle, not his tendon in his match with Levan.
He tore the bicep off the tendons, the connective tissue, if he tore his actual bicep in like the half of it, he would have a double bicep like Larry
@@cix9420 it didn't tear his full bicep. he has an indent on his arm in the muscle where the injury occurred.
This is the best armwrestling anatomy video on TH-cam. Thanks!
That was super interesting. I learned a lot. It makes you realise just how much goes into training for armwrestling at the highest level. Understanding his body, muscle groups and leverage properly is clearly a huge factor.
Lots of good information, especially the part about how tendons recover differently from muscles and how to speed the recovery of tendons.
Basically light repetitive movements to speed tendons and ligament recovery? Correct me if I’m wrong
@@hamedhaidari8658 quite opposite. very heavy, static contraction. look into “static holds for armwrestling”.
@@jwilsonhandmadeknives2760Hamed is talking about recovery. light & high reps, 'alot of motion' is exactly what Devon means for fluid movement in connective tissue recovery vs the "very heavy, static contraction" used in regular arm wrestling training
Awesome video Dr Chris! Very informative and you couldn’t have picked a better person to interview! Devon is an awesome dude!
I was so impressed by this video. Very detailed and i depth analysis. Thank you so much for doing this
Absolutely amazing video. The sport is an underground community & there has always been a shortage of direct, descriptive visualizations of the muscle groups involved. And especially the injuries.
Awesome vid! would love to see more videos like this with other sports/martial arts. I'm a climber so I would be super interested in the kinds of stresses us climbers see with our fingers and hands.
I love when my favorite channels cross over. Awesome video.
what a great video great job !!!!!!
Thankyou Dr. for reaction.
What can I say... this is an awesome set of explanations.. I discovered you when you covered Ken Roczen's injuries a while ago and to see you cover another of my idols in Devon Larratt or should we all start to say Professor Larratt (love it) is just super exciting. Thank you!
Love the content Dr. Raynor! Never expected this collab, nor knew the depth of Devon's intelligence!
This is an amazing video. From what I’ve learned from watching Devon train and talk arm wrestling is sooo much more than just brute strength. It’s a thinking man’s game and having the full knowledge of anatomical structures of the Armwrestling movement. Thk u for the content….
It definitely is. Arm wrestling is a unique sport where most arm wrestlers have an instinctual awareness of how use their strength effectively with minimal injury to the muscles, bones, ligaments, and tendons.
Is it? I mean in the end, at the pro level, it's not like there's some inherent skill aspect coming into play, anyone can reach the necessary skill level with training. Optimizing the strenght of his arm due training, that's what it comes down to in the end. That's why Devon didn't stand a chance against Levan. All his experience ultimately meant nothing against someone with more arm strenght.
@@BamBamGT1hats because the strength difference is absolutely drastic. Your example is ignorant and doesnt prove the original commenter wrong. Thats like saying "size matters in fighting" and having a little girl try to beat up Dewayne Johnson. When in reality size doesn't matter until it hits a certain point. But you can definitely beat someone who only has 50lbs on you. Not 200lbs. I fought my ex manager who was 2 inches taller and 40lbs heavier than me. Using drastic examples to prove a point is disingenuous
@@matt59fire is it drastic? Devon is the proof that looks are deceiving. Beating many people that looked stronger. He's trained his various muscles to the point he beats people that look stronger. There's no "secret arm wrestle skill" that only he has unlocked.
@@BamBamGT1 You completely missread what i said and came from a different direction of the argument that i wasnt bringing up. Also Devon is massive. Levan is the biggest and strongest he has fought. He is pushing a little over 400lbs bodyweight. Fighting people bigger than you is different than fighting people way bigger than you. Its like you dont understand the concept
Excellent video! Especially the last 3-5 minutes, the way you talk, present and truly display that you care and respect the sport, the people and the ability of movement itself was really touching.
Devon is the face of arm wrestling. PERIOD! 💪🇨🇦
Awesome guest. Thanks doc 👍🏿
am I the only one that I don't get Dr Chris's videos in my recommended tab I have to manually search for the latest video
I have considered starting my own mailing list to get around this problem with TH-cam.
Absolutely the best and most informative interview ever.
This video is so great! It shows the importance of specialization and understanding the little details that make all the difference!
not even a minute in and you can see its a great video, good editing and sound , props to you and your team Doctor !
I really enjoyed this! This was my first video of your but I really enjoy having an expert dissecting something that seems so simple but to the trained eye, is incredibly complex. Thank you!
"He's seems to be healing his injuries at superhuman speeds". Well, i'm no surgeon or doctor but i could figure this one out pretty easily
@@PlAsKusJ3GaRn stem cells
This is what you call a informative video tx that was great.
Very cool vid, Doc. Devon is the face of the sport. It’s a shame social media wasn’t around earlier in his career. Devon may never be able to beat Levan, but his legacy is secure.
He can beat him in a few years when levan collapses from roid abuse
Thanks for the great explanation !
I managed to break my arm while armwrestling in class in my early 20s, i had bad positioning as we were sitting next to one another rather than opposite. It was a very surreal moment because i basically have no strength in my arms but still managed to break a bone... Just as i was starting to do a push my arm broke. I had never broken anything before or since that!😅
How did that go? Instant shock and severe pain? Never broke anything that I know of, yet.
@@BrandonTheKralik It wasn't too painful, i went to the teachers office and asked for an ambulance as none of us had a car, the next day i had to get surgery and had a titanium plate installed. The surgeon said i had very thick bones so i didn't have a calcium deficit or anything. All ended well, but if i had watched this video i probably wouln't have broken my arm...
That must have been a sight! I broke a bone once and I realized at that point I could break… ha ha
Thank you for bringing the science of arm wrestling to light
6'5" former special ops guy is built different 🤨 ya don't say
i like how Devon is all over the internet lately, hes been a BEAST for YEARS
Devon is so intelligent. He could write a PhD dissertation based on his life experience and accumulated knowledge.
Hi Dr. Chris! I'm a Dr. Chris (FM) as well! I stumbled upon your channel because I'm a huge fan of Devon and the world of arm wrestling. Your video on him is very intricate and educational. Hence, I subbed! Keep making awesome videos, Doc!
Now all we need is a Psychologist to talk about Devon's psychological warfare techniques and we will be all good.
👌🏻😂
This was a phenomenal breakdown! 🔥
I met Devon twice at practice. I was talking to a pilot who would air drop him. Devon made a $200 bet with everyone he could do 1000 pushups in one set no stopping. Everyone took the bet and Devon walked out with over $6000
Devon won all of the pushup competitions while he was enlisted
Shit that never happened 🤣
Thank you for that, it was extremely well done. I was the first certified personal trainer in the US and I wrote the first accreditation course for ACSM in 1984 and when I train people online, I STILL look for ways to corroborate information I give newer clients. In this case, I was looking for information on tendon damage and recovery for a client who injured his biceps tendon while rock climbing, and this video not only substantiated the information I'd already given him, but I was able to time stamp the relevant portions of the video. Well done,I think I'll subscribe!
Glad to hear that it was beneficial for you!
Devon is a real life Wolverine. I dont understand why he isnt in a movie yet.
Gerard Butler needs to play him in a movie
Excellent content. Many thanks for publishing this educational and practical material.
Ex special forces. It's no surprise. Endurance wise, all operators are like this.
Awesome video. Thanks for making this
Glad you liked it!
YAY. King Devon.
One of you best videos to date. Simply awesome.
Who's here because it popped up when you're already subscribed to 20 armwrestling channels and say...Ehhh, what's 1 more rabbit hole. 😂
I love watching Devon compete. Arm wrestling is a fascinating sport.
Therapist: Devon is not real, he can't hurt you
Nobody: ...
Devon: fight me, fight me, fight me...
Great interview with two great fellows bringin' the goods! Thank you both for sharing.
Doc you gonna watch the match of Devon vs Genadi?
I just might do that!