Guest guest Posted January 4, 2007 Report Share Posted January 4, 2007 Hi ! I'm confused by some of your insights in your last post: We see the human spine born with a C-shape posture. The same posture that quadrupeds possess. We see that under the influence of the effect of gravity it attempts to grow into the characteristic upright S-shape posture. First, do you mean humans are born with a spine in a C-shaped posture? That line was confusing as written. Second, are you suggesting that the spine grows into a characteristic S-shape because of gravity? We see that the Evolution science attributes our unique ability of being an upright bipedal creature is due to our adapting the S-shape from our predecessor the Ape and their C-shape spine. I seem to recall there are at least ten or more theories regarding how and why bipedalism evolved in humans. In discussions on how the ancestors of humans started on their legs, scientists are divided between the terrestrial theory, (we became bipedal through a four-legged stage on the ground, and the arboreal theory, (climbing and swinging through trees as potential precursors for bipedalism). Are you suggesting that the S-shape spine was the cause or effect of bipedalism? Ken Jakalski Lisle HS Lisle, Illinois Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 5, 2007 Report Share Posted January 5, 2007 Scherger: Biomechanics vs PMOT Examination/ training of Posture We have been talking about Examination (also how to train) of Human Spinal Posture from a biomechanics vs. PMOT view. PMOT as in human ability to produce force for human movement is increased by basic muscle hypertrophy through Progressive Muscle Overload Training. Chiappini: Please can we call this strength training. Your term PMOT is your term and the rest of us here would call it strength training. scherger: Biomechanics viewing proper posture and the mechanical advantage it provides as being the key to improvement force for human movement. To narrow down more specifically Spinal posture relative to PMOT or Biomechanics I will begin with the White and Panjabi in their text Clinical Biomechanics of the Spine with their statement the spine's posture demonstrates Biomechanical Adaptation. The spine will adapt a posture relative to effects applied to it. We see the human spine born with a C-shape posture. The same posture that quadrupeds possess. We see that under the influence of the effect of gravity it attempts to grow into the characteristic upright S-shape posture. Chiappini: We are born with a c shape spine due to our development in the womb (cramped quarters) and a lack of muscular strength. scherger: We see in outer space that without the influencing effect of gravity, the astronaut's spine adapts the simian C-shape. Chiappini: The spine adapts a c shape or simian shape as you put it, due to a loss of muscle tone. The loss of muscle tone or strength is due to the lack of gravity on the individual and the subsequent need of the muscles to aid in the opposition of gravitational forces. scherger: We see it is characteristic as people age they loose the S-shape. They become humped over. Chiappini: This is again due to a lack of muscle tone or strength and of course the possible results of osteoporosis and soft tissue degeneration. scherger: The Greeks 4000 riddle of the Spinx asked this question. What walks on four legs in the morning, two legs in the afternoon and 3 legs in the evening and has only one voice? Who could answer it would receive life, who could not would have life taken from them. The answer? Man. As infant walking on all fours, in middle age upright on two legs and as older person walking bent over with the cane acting as the 3rd leg. This is not some idle riddle. When studying human locomotion relative to spinal adaptation it is characteristic to first see the infant with C-spine, then trying to adapt the secondary cervical and lumbar lordotic curves and then in later life seeing the human slump back into the C-shape and will mimic the same locomotion characteristics as the infant. . Chiappini: This is normal and related to strength and flexibility of the muscles of an individual. Have you ever taken the time to watch an infant squat down to pick something up. They use perfect form, erect posture with a deep squat. Unless one is born with an abnormality this occurs naturally. Typically as one goes through life the daily activities or hobbies of people lead to imbalances and postural problems. Aging of course takes over eventually and a percentage of the population develop a kyphotic posture due strength imbalances, loss of strength, loss of flexibility, osteoporosis, and soft tissue degeneration. None of what you have written is ground breaking info. scherger: We see that the Evolution science attributes our unique ability of being an upright bipedal creature is due to our adapting the S-shape from our predecessor the Ape and their C-shape spine. For instance locomotion studies will define one as being either a locomotion (human) machine or a postural maintenance (ape) machine relative to quality of ones postural adaptation and the effect on the hamstring muscle. Proper adaptation of the S-shape posture appears to be the secret behind the ability of humans to leverage upright posture and move against the adverse effect of earth's gravity. It appears that it also gives humans the ability to be upright and work under control against forces that are in front of the body. Such as push a grocery cart hit as in volleyball or push the other fellow backwards in football. So it appears Proper adaptation of the S-shape posture appears to be the key to the human bodies musculoskeletal lever systems effectiveness to jump, run and move forward against the adverse pull of gravity or anterior force. Chiappini: Again none of what you are stating is ground breaking info. scherger: PMOT training does not address adaptation of the S-shape posture as the key to physical ability. It does not try to define what is the model of proper posture or how the posture of the optimal S-shape model, as lever machine, produces superior upright bipedal abilities or produces ability to push against an object to the anterior as in football or pushing a grocery cart. Chiappini: I would hope that every strength coach who is worth anything would be offended by this statement. Every person I work with I address their spinal posture. I also know that we do not need to do a pelvic tilt to correct spinal posture. We are all individuals and therefore we will differ slightly from what may be ideal in your mind. I really have to question whether you have worked with athletes or in the real world as opposed to your lab or studies. I have witnessed many kyphotic postures that could produce an immense amount of force in a pushing fashion. scherger: It only addresses muscle hypertrophy on any ones posture (hunchbacked individual for instance) as to running faster, hitting harder. It cannot tell you why hunchback bent over person cannot hit in football or run. Chiappini: How can you make this statement? Everything a good strength coach programs should cover increasing strength to creating balance and flexibility of an athlete. This would encompass correcting or addressing a kyphotic posture if it was present. scherger: Biomechanics addresses what is the optimal model of the S-shaped spinal posture. How as lever machine it produces the superior locomotion as in running. How it produces the optimal leverage for pushing the guy in front of you backwards in football. How it gives the football player the best vertical leaping ability or how it leads to them when standing to stand at the minimal energy expenditure so they are naturally better conditioned. Chiappini: Everything you stated above are factors of strength , flexibility and technique or getting position on the other guy. Conditioning is a factor of training and a person who is conditioned to play 4 quarters of football will be able to play those quarters whether they have " your ideal " spine or not. Scherger: Biomechanical strengthening of the spine is not as PMOT issue, but a biomechanical adaptation issue. Biomechanical or orthopedic strength training that results in the enhancement, restoration and preservation of proper S-shaped posture. Chiappini: This can be achieved with well designed strengthening and stretching programs. scherger: So you train the spine properly to adapt the secondary lumbar curves for football for running so your athlete possesses under the skin the optimal posture that produces the best mechanical advantage. It appears to me the world of PMOT training does address the concept of posture affecting performance. It cannot tell you how C-shape spine produces poor locomotion or hitting ability in football because it does not address mechanical advantage. It cannot tell you how to train for adaptation of the S-shaped posture because training for it is only muscle hypertrophy. It does not recognize there exists an effect on earth that relative to gaining a S-shaped posture that your body possesses a better mechanical advantage to function against that effect. It boils down to how does the PMOT mind vs. the Biomechanical mind evaluate spinal posture. I have told you how the biomechanics thinking evaluates spinal posture. Now I would like to hear not only in addition to how I am wrong but a statement how the PMOT thinkers evaluate spinal posture or do they at all? And if they do or do not why? Chiappini: We address these issues constantly and yes we know that a healthy posture can lead to better performance for the majority. do you realize that every muscle when trained has some degree of hypertrophy. You also do not realize that there are other factors when addressing a kyphotic posture. HAMSTRING FLEXIBILITY is one of them. I know you don't look at this as you incorrectly gave advice to a post on this site with regards to this issue. Quad to hamstring strength. hip flexor strength and flexibility. Of course we have to also look at upper back musculature as well. You really need to start from the ground up when evaluating someone with regards to posture. I don't know if you actually lift weights. If you do, do you do your research with the local gym rat whose program is an absolute mess and has all the posture problems associated with a poorly designed program? While you continue to look at things from a segmental standpoint the strength and conditioning world looks at it more globally and that is how the body performs in athletic events. Train hard and smart! Damien Chiappini Pittsburgh,PA. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 5, 2007 Report Share Posted January 5, 2007 S reply to Ken J Ken wrote: , First, do you mean humans are born with a spine in a C-shaped posture? That line was confusing as written. Second, are you suggesting that the spine grows into a characteristic S-shape because of gravity? writes: 1. The human is born with a C-shaped spine. 2. Musculoskeletal lever systems like all lever systems possess a measurable ability to develop force, this measurable quality is termed mechanical advantage. The unique S-spine of humans as a lever machine bestows on humans certain unique leverage abilities in earth's adverse gravity. It appears to me that gravity is the triggering effect that starts the process of adaptation in the infant, from the C-shape to the characteristic adult S-shape. Stated: We see that the Evolution science attributes our unique ability of being an upright bipedal creature is due to our adapting the S-shape from our predecessor the Ape and their C-shape spine. Ken replied: I seem to recall there are at least ten or more theories regarding how and why bipedalism evolved in humans. In discussions on how the ancestors of humans started on their legs, scientists are divided between the terrestrial theory, (we became bipedal through a four-legged stage on the ground, and the arboreal theory, (climbing and swinging through trees as potential precursors for bipedalism). writes: Relative to how humans got the S-shape spine there is the evolutionist and creationist thought process. Now as physics biomechanical thinker I happen to think creation when thinking how we got the S-shape, in the same vein that Einstein stated " God does not play dice with the universe " . Even though I used God in the preceding sentence I could have used term Aliens, as in Aliens created humans and brought us here to say mine earth. The study of the human spine, its physics adaptation of structure and function, when thinking scientifically creation vs. evolution you are not thinking a religious issue. Here is the difference between creation and evolution thinking. It boils down to luck vs intent. Evolutionist science thinks S-spine of humans was luck. One day in herd of 20 apes there was born an ape with a S-shape spine. Now there could have been an ape born with S-shape spine before but when you are going to swing in trees that S-shape was no good so that one died out. However when this one particular one was born the trees were gone and the ape to survive had to be more bipedal then quadrupedal, and since this ape was bipedal more then quadrupedal it survived and its offspring, which had the same programming to develop the S-shape spine also survived better and pretty soon you had only the S-shape spine herd. I could be okay with the evolutionist idea except for this academic irritation of mine. The evolutionist claim science but they have not produced science revealing the leverage capabilities of the human S-shape spine. They are not interested in proving intent, they are interested in proving luck. They spend time and money seeking that ape with the S-shaped spine, which they call the missing link. I fail to see to see how this has help real people in the real world understand what the S-shaped spine can do for them, how if they do not have it how they suffer, how they need to train to get it as young people and how to keep it through life. To me it makes for good entertainment like watching movies like Jurassic park. However when you think creation you think intent. This is how the old physical medicine thinkers of the past thought. Da Vinci, Galen, Hippocrates, Borelli they were trying to figure out how the spine worked. What was the intent of this lever system? What can it do! How does it work? There is basically no difference between the structure and mechanics of a heavy lift crane and the human spine when in position to perform a sit up. This is how they are the same. They both are lifting a resistance force. For the crane it would be the object lifted for the human it would be the upper trunk. They are both lifting from a curved or lordotic posture with the convexity of the curve upward. The crane has two articulations or joints between mass lifted and the stationary point. They are the joint formed by the boom and jib and where the boom articulates with the cab of the crane. The human spine has basically 3 more articulations, T12-first lumbar joint, L2, L3, L4 in between and eending with 5th lumbar articulating against sacrum. For effective lifting they both employ one line of pull crossing two or more joints when making the lift. The crane has muscle or line of pull that crosses from the cab to attach to the point on jib. The human body has muscles like external oblique, rectus crossing all the joints low back, from the hip to the chest. My point is if you knew how leverage worked and had never seen one, but you came across a heavy lift crane, you would assume it was created with intent and your job would be to figure out how it worked or produced leverage by mechanical advantage. By engineering the structure out on paper you could determine for instance that you want to lift with the crane's jib and boom meeting upright in gravity the same as the lordotic position like the human s-spine lower back, and not trying to lift with the boom and jibs lever arms horizontal with the earth. The biomechanics person looks at the spine like the crane as to what what posture this lever system should should be in to produce the best mechanical advantage, which in addition to producing force is also the safest position to function from. The PMOT strength person would not address the posture of the crane and the different mechanical advantage's, to them it is always well if it did not work right, it just needs more muscle. When it comes to the human spine, how it works, how it adapts whatever it is always centers around muscle strength is at heart of everything. Being a PMOT thinker is not bad, its good, its just the first step before and below biomechanics and spinal strenghtening thinking. I know how Damien is thinking, I used to think the way he does. I started out as strength coach in the old European health clubs in the mid 1960's. Of the two guys I would like the most to be on my side would be Casler and Damien. Through the years I have always found the most AVID PMOT strength trainer turned into the most RABID Biomechanics strength trainer. Here is Damien's PMOT muscle reply to everything. We are born with a c shape spine due to our development in the womb (cramped quarters) and a lack of muscular strength. The spine adapts a c shape or simian shape as you put it, due to a loss of muscle tone. The loss of muscle tone or strength is due to the lack of gravity on the individual and the subsequent need of the muscles to aid in the opposition of gravitational forces. We see it is characteristic as people age they loose the S-shape. They become humped over. This is again due to a lack of muscle tone or strength and of course the possible results of osteoporosis and soft tissue degeneration. When studying human locomotion relative to spinal adaptation it is characteristic to first see the infant with C-spine, then trying to adapt the secondary cervical and lumbar lordotic curves and then in later life seeing the human slump back into the C-shape and will mimic the same locomotion characteristics as the infant. This is normal and related to strength and flexibility of the muscles of an individual. Aging of course takes over eventually and a percentage of the population develop a kyphotic posture due strength imbalances, loss of strength, loss of flexibility, osteoporosis, and soft tissue degeneration. Biomechanical or orthopedic strength training that results in the enhancement, restoration and preservation of proper S-shaped posture. This can be achieved with well designed strengthening and stretching programs. The PMOT answer for everything spine is that weak muscles cause the problem and strength training to make muscles stronger is the answer. Ken wrote: , are you suggesting that the S-shape spine was the cause or effect of bipedalism? writes: Ken I guess I would be suggesting that the S-shape spine comes before being bipedal. We need to examine Spinal S-shape structure relative to the terms cause and effect. If you burn yourself with a match what causes the healing blister to develop. The body does. The match was the effect the caused the blister relative to what the effect did to the body. Take darkening of the skin by melanin. The body causes melanin production relative to the effect of the harmful sunrays. The important aspect of the body and cause and effect is identifying the relativity of the two. For instance you do not get dark skin going into a dark room. You do not go into no gravity of outer space and expect to develop S- shape. Adaptation for the human survival is the ability to adapt in time to a need. The ability relative to an EFFECT for your body to CAUSE an adaptation that better increases your survival ability to that effect. Humans are born in the adverse EFFECT of earth's gravity, the human body relative to that effect causes the adaptation of the S-shape. The S-shape spine possesses a leverage posture that increases the ability of humans to function against that adverse effect. There are two special survival leverage abilities that relative to the force of gravity that adaptation of the S-shape spine gives humans. One is bipedal locomotion. The other is effective trunk momentum. This second one is the mechanical principle of how a heavy lift crane works the same as human performing a supine sit up against the effect of gravity. Or when standing hitting the guy infront of you in football. The key here to training for the development, restoration or preservation of the lower back curve is understanding the relativity between gravity and the leverage ability of the lumbar S-curve. It common knowledge that putting the muscles under PMOT training they will hypertrophy to better able to handle anticipated weight. You want bigger muscle you subject it to more resistance. It is common knowledge that by putting skin under effect of suntan lamp that melanin production will start to better handle anticipated exposure to sun rays. You want darker skin you subject your body to more sun. The adaptation of lower back S-curve in gravity gives your body better leverage ability from the supine position to rise up in gravity into bipedal position. It gives your body better ability to function against forces from the anterior when in upright position also. You want to produce better S-shape lower back you subject your body to effect of rising supine against the force of gravity. Your body will develop and maintain S-shape lower back in anticipation of it having to perform that act. The thing is you do not go crazy when doing this. Meaning you do not try to subject your skin to hours of sun or your muscles to heavy weights, you do P?OT Progressive whatever it is Overload Training. when doing the situp you do it easy in beginning and you alwasy keep fulcrum under lower back as safe way to protect lower backs joint tissue (especially as you you get near L4, L5 and sacrum because this is where the forces on joint get higher)from being injured from shear forces that would develop to the posterior that would cause bulging of the discs, pinching of the nerves and pinching of spinal cord. From leverage study the upright bipedal posture appears to be more secondary to the primary leverage function of effective momentum. The upright posture is a complicated leverage system that is a basic delivery system for effective momentum. The S-shaped spines saving grace for bipedal locomotion is the hip joint and hamstrings do not know that above them maintaining upright posture is a complicated mess of joints, parts and muscles. They only feel when the upright mess is sitting correct or not. When it is correct the hip joint is optimally feeling the entire upright center of trunk mass is sitting vertically over it self and the hamstrings do not have to expend energy to maintain the upright trunk mass. Scherger Ridgefield WA In Supertraining , CoachJ1@... wrote: > > Hi ! > > I'm confused by some of your insights in your last post: > > We see the human spine born with a C-shape posture. The same > posture that quadrupeds possess. We see that under the influence of > the effect of gravity it attempts to grow into the characteristic > upright S-shape posture. > > First, do you mean humans are born with a spine in a C-shaped posture? That > line was confusing as written. Second, are you suggesting that the spine > grows into a characteristic S-shape because of gravity? > > We see that the Evolution science attributes our unique ability of > being an upright bipedal creature is due to our adapting the S- shape > from our predecessor the Ape and their C-shape spine. > > I seem to recall there are at least ten or more theories regarding how and > why bipedalism evolved in humans. In discussions on how the ancestors of > humans started on their legs, scientists are divided between the terrestrial > theory, (we became bipedal through a four-legged stage on the ground, and the > arboreal theory, (climbing and swinging through trees as potential precursors > for bipedalism). > > Are you suggesting that the S-shape spine was the cause or effect of > bipedalism? > > Ken Jakalski > Lisle HS > Lisle, Illinois > Quote Link to comment Share on other sites More sharing options...
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