Showing posts with label moment arm exercise. Show all posts
Showing posts with label moment arm exercise. Show all posts

Friday, February 24, 2012

Congruent Exercise - Wisdom from Bill DeSimone 3

Ok the next instalment of my thoughts on Bill's book.  (The series started here)

Summary of Chapter 2.  "Full Range of Motion" : Biomechanics or Buzzword

Fibre recruitment is not based on range of motion.  Rather fibre recruitment is proportional to the load and/or the speed .  It is not related to the joint angle! Thinking about how muscles contract, they are weaker at the extremes of the motion where there is either active or passive insufficiency.  It it through the middle of a muscle's contraction that it is strongest. 

We need to train the strongest range of the muscle, which will also mean avoiding lockout where the muscle is under no stress - there is zero lever and the bones take the strain.

We look to work the biomechanically strongest range, the joint angle for peak muscle torque;  we want to match the muscle's strongest postion with the most challenging part of the exercise, usually the sticking point or position of maximum moment arm, where the weight is at the further horizontal distance from the joint.

We also look to eliminate the lockout position and the end ranges of the muscle where there are either active or passive insufficiencies.

In addition, we need to avoid movements which create or pass through joint obstructions - that will only promote excess wear and tear and strain.

We should not seek a full range of motion but a full safe and appropriate range of motion!
So pick moves where the muscles are strongest at the point when the motion is hardest!

 

Quote from Bill

"Full range of motion", while a well-intentioned piece of instruction, was really a product of its time.  In the context of bodybuilders doing short pumping motions, and piling on weight for partial lockout reps it was a step in the right direction  But once it got taken out fo context, it went too far in unproductive ways and created a need for more precise instruction.  

Thursday, February 23, 2012

Congruent Exercise - Wisdom from Bill DeSimone 2

Ok the next instalment of my thoughts on Bill's book.  (The series started here)

Summary of Chapter1 - Avoiding the Tragic Accident: Biomechanics you need to know

  • You need to avoid injury.  Some exercises, even those promoted in magazines, books and website make injury almost inevitable.  There are basic rules that need to be recognised
    • Free weights get heavier as you bend - this is basic mechanics and leverage.  When the lever arm is longest - the maximum moment arm - it will feel the heaviest....so get into that hard position to start the movement;  go from hard to easy or else you may go from easy to hard and never get out of that position
    • You can lower more than you can lift - so start with the positive movement not the negative.  Lift first, don't lower.  If you lower first you might be handlin a weight that you will not be able to lift.
    • The spine is not designed to support top heavy loads - the bones of the spine are set up as a pyramid, the whole design is for stability.  The lumbar spine is made for stability, the thoracic for some mobility and the cervical for great mobility.  The muscles are built in layers, the rotatores, multifidis, erectors.  The whole set up is for stability vertebrae to vertebrae, not overall movement.  These small muscles are about posture and holding the spine stable, it is the big muscles of the hip that move weight.   When you pile a weight on top of all this, the bones and muscles are loaded in a way that they were never intended to cope with.
    • Balance - on one leg the small muscles of the hip and spine are at work.  The glute medius for example has a primary role of pulling the pelvis down to maintain the centre of gravity ove the grounded foot when you are on one leg.  The spine follows this motion.  In bodyweight moves it is all about stabilisation.  Add weight and you are forcing motion and loading that is inappropriate.  So keep added weight near your centre so that the prime mover move you while the stabilisers stabilise....
  • Weights Load Limbs, while the deep muscles stabilise joints....to allow the superficial muscles to move those loaded limbs.  Don't confuse the two.
  • Adopt proper function with respect to bones, muscles and joints and you will avoid catastrophe, reduce strain and more effectively load the muscles.
    The take away:

    • Start motions with a positive / concentric motion, from the position of maximum moment arm. 
    • Don't load the spine with weight on your shoulders
    • Let the postural muscles stabilise, not act as prime movers 

    Quote from Bill

    There's no magic attached to one technique or tool vs the other.  There are however, specific, documented ways that muscles and joints are supposed to function, and walking into a gym doesn't change that.

      Wednesday, February 22, 2012

      Congruent Exercise - Wisdom from Bill DeSimone 1

      I have been meaning to write a long review of Bill's book - Congruent Exercise (now on Amazon).  I have already done something short, but it deserves something longer and more detailed.  However I am struggling for time at the moment. 

      What I might do is a series of short posts.  Pulling out some of the profound wisdom from the book.  However, I'd still recommend that you buy and read the thing, both to support Bill and to make your training safer and more effective.  It is certainly something that I have tried to apply in my book Hillfit on fitness training for hiking.

      Summary of the introduction

      The book is about delivering the benefits of weight-training without the risk of ether acute or chronic injury.  This risk can be minimised by applying the most appropriate joint movements, posture and leverage (moment arm) in other words, biomechanics.  This approach is not specific to any equipment - it is a filter through which to shape exercise with bodyweight, free weights or machines.

      Quote from Bill:

      The one constant is your body and biomechanics.

      Saturday, December 17, 2011

      Congruent Exercise 3: Injuries are to be avoided

      One of the basic precepts in Bill DeSimone's Congruent Exercise (I'd encourage everyone to get a copy) is that :

      "The absolute first priority for anyone training with weights should be to avoid a catastrophic injury."

      Bill notes that this should be obvious, but points to a series of tragic and disabling accidents that have left people dead or disabled.

      I thought this when reading some on the weird thing that is T Nation the other day.  It is a set of tales of catastrophic injuries including a powerlifter who shatters his spine while his pals laugh and triceps torn while benching, trying to present these dangers as acceptable, things to be overcome in a macho drive to success.    Actually it comes across as stupid.  Why the hell glory in disabling movements?
      strange.


      As I have said before:  KEEP IT SAFE

      Congruent Exercise 2: Just because you can doesn't mean you should

      I'm still planning my full review of Bill DeSimone's excellent new book Congruent Exercise, but I saw a video the other day that made me think of one of the things he says in the book:

      "Just because you can move a limb in a certain way, doesn't mean that you should, and it certainly doesn't mean you should move it that way with extra weight."

      Bill talking about safe exercise choice but his words came back to me when I saw this.  Surely this guy shouldn't keep doing this!


      Wednesday, December 14, 2011

      Congruent Exercise - Part 1

      It is rare that I am truly excited by a book, that writing will really stimulate me intellectually, with sets of ideas that connect and make sense.  I like it when that happens, when you find something "new" but which makes so much sense because it is not really new, it is obvious when you put the pieces together.  It is the logic of it I like, when things hold together in consistent ways.

      Bill DeSimone's new book, Congruent Exercise, is exciting me!  I will put up a proper review in a few days, but I am really savouring it at the moment.  As I read each page there is a pencil in my hand and I am marking up key paragraphs.....then I find that I am marking the whole thing!

      In this new book, Bill is covering much of the same material that was in his first book - Moment Arm Exercise - but he has refined his presentation and the whole argument is very clearly presented.

      Moment Arm Exercise fascinated me and I used to study it like a text book, I still dig it out to check out the worth of different movements.  Congruent Exercise is more like a manifesto, a simple pulling together of premises to give a clear and logical prescription for exercise.  Safety is key to all this, designing movements that reflect proper joint and muscle function, informed not by "feel" or dogma, but anatomy and mechanics.

      As I say, I'll put up a proper review in a few days, but for now suffice to say that this is the best book I've read this year.  You can get a copy at Bill's eBay store here, or read about the book on its Facebook Page.

      I intereviewed Bill way back here and it is  interesting to see that some of the things we touched on in that interview are developed a bit in the new book - such as the role of postural muscles.


      You can see some of his videos here.

      Saturday, February 12, 2011

      Optimal Exercise Guide Bodyblade Plus

      I had something up from Bill about this the other week.  Here he explains more:



      Once again, the guide is now available from Bill.  Anyone interested in buying a copy of "Optimal Exercise Guide: The Bodyblade Plus":  can get it, Paypal $20 US, $27 outside the US, including Priority Mail, to optimalexercise@comcast.net.)

      Thursday, January 13, 2011

      What is progress when the normal way is down?

      I've been re-reading the post I put up yesterday from Bill DeSimmone and there are some elements that have been prompting some reflection.  I think it is worth re posting part of that post alone to highlight the particular issues that he got me thinking around:


      ...... being obsessed with “progression”  (is no good if it)  leads to injury or makes you dread training.

      For me, “progress” in terms of amount of weight lifted is an obsolete standard.  As we age, “normal” is to decline; so, if the weights I handle stay the same, I’m ahead of normal.  The only way to maintain is to train regularly, and the way to train regularly is to avoid injury.

       In the early stages of training, weight and reps are perfectly valid standards.  But once you are strong enough and big enough, you have to weigh the possible marginal benefits of increasing weight and reps vs. the additional discomfort and strain.  For me, I find it a lot more useful to “progress” in terms of control of muscular actions, and the Bodyblade®, Bosu®, and ball are ways of addressing this.

       I think this is a really interesting and important point.  Sometimes the way in which exercise is presented, the idea seems to be that you can forever keep on progressing in terms of weight or reps....obviously that is untrue or else given time we would all be deadlifting 1000lb or whatever.    There is a ceiling.  How do we handle it? 

      Bill has an interesting approach in changing the metric.

      Wednesday, January 12, 2011

      Optimal Exercise Guide: The Bodyblade Plus

      More from Bill DeSimone

      I had an interview with Bill back in 2009 and his approach has always fascinated and impressed me.  (Anthony is another fan and he had Bill speak at his 21convention last year).  Anyway, since that interview i've remained in touch with Bill and he has shared with me some of his developing thinking.  One of the things we corresponded about was prompted by the Max Pyramid Protocol that John Little developed and wrote about last year - that particular protocol is designed to maximally and safely stress the muscles....at their strongest points when the most fibres are engaged.  A static contraction, or series of them, at the point of maximum moment arm is (are) used to deliver a deep inroad.  I've played with it a bit and it is really useful.


      I chatted to Bill about this and he explained that he was looking at other ways of challenging peak muscle torque while both not stressing the joints and actually working the postural muscles appropriately.....


      He has now developed those ideas.  I'll quote from Bill:

      I've  been using the Bodyblade, Bosu, Ball, and most recently the heavy rope in my studio in NJ for a few years now, both for myself and clients.

      The instruction was all in my head and scraps here and there; never had a good reason to clean it up and make it presentable.

      Recently I've been working with a martial arts instructor on the Gracie Combatives.  He was having some knee and shoulder trouble, I showed him what to do, and it gave me the excuse to organize the material as a manual for studio clients:  "Optimal Exercise Guide: The Bodyblade, Plus".
      That guide is now available from Bill.  Anyone interested in buying a copy of "Optimal Exercise Guide: The Bodyblade Plus":  can get it, Paypal $20 US, $27 outside the US, including Priority Mail, to optimalexercise@comcast.net.)


      Bill has provided me with an exclusive extract from the Optimal Exercise Guide to whet your appetite:

      How I Stumbled upon the Bodyblade®

      I had successfully ignored the Bodyblade for several years.  I was aware of it, usually spotted in the corner of a physical therapy practice; but whenever I asked about it, I only got vague responses.  “It’s for functional training”, “It’s for the core”...but that was about it.  Since I was comfortable with Nautilus-influenced strength training, I saw no need to pursue it further.

      I had a similar response to vibration training; again, successfully ignoring the ads in the trade magazines and studies in the NSCA Journal.  The price tag on the vibration machines didn’t help spur my interest.

      At the same time, I had some observations about my own training.  After 30-plus years, I knew that the amount of weight I could lift had pretty much topped out.  On a given exercise, I could build up to a maximum amount of weight; but then, at the slightest increment above that weight, the form broke down and the amount of discomfort in the joints went up dramatically.  I could give myself the illusion of progress, by accepting sloppier form or changing exercises, but that inevitably led to an injury or hitting the same dead end. 

      Unfortunately, I had a bit of a contradiction in play, in that I still liked to train hard.   With weights, this seemed to lead to more joint aches, especially in the shoulders.  A few years back, this and other musculoskeletal issues had led me to the biomechanics textbooks, eventually resulting in the Moment Arm Exercise manual and the series of You Tube videos.  And, while I did refine the weight training exercises and techniques that I used on myself and clients based on that work, I still didn’t completely eliminate the nagging aches. 

      So, in mathematical terms:

      Frustrating approach to training + more refined biomechanics + willful ignorance of alternatives= nagging aches.  Not exactly the result I was looking for.

      Hedge-clipping

      So one day I’m being the nice older brother and helping my sister with some hedge trimming (Hi Liz!).  I use a portable, electric trimmer, with alternating saw blades, which must weigh about 5 pounds.  I use it for about three or four hours in the morning, break for lunch, then fall asleep.  For the entire afternoon.  I was completely exhausted, my upper body quivering, completely spent, and wondering if I stumbled onto a new, debilitating disease.   

      Apparently not, but a 5-pound tool should not have taken this much out of me.  Then it dawned on me: it was the vibration.  As the blades alternated to cut, the unit shook.  In order to control the trimmer, you had to steady yourself against the vibration of the unit.  And rather than turn it on and off,  I left it running the whole time; so not only did I have the steady the unit as it cut, I had to control it just holding it between cuts.

      Where were those vibration studies again?

      Excerpts from selected studies

      As usual with studies: the more you read, the less certain the results.

      Effects of Vibration Training on Muscle Strength: A Meta-Analysis.  Pedro J. Marin and Matthew R. Rhea.  Journal of Strength and Conditioning Research 4: 548-556, 2010.
      “Vibration training or whole body vibration (WBV) constitutes a mechanical stimulus that enters the human body via hands when gripping a vibration dumbbell or bar, pulley system, via feet when standing on vibration platform, or applied directly to the muscle belly or the tendon of muscle by a vibration unit…The use of platforms represents the most common form of vibration exercise…Most treatment sessions consisted of short bouts (30-90 seconds) with ~60-second rest between sets…
      “Different mechanisms have been suggested in the literature how vibration stimuli can have effect on the neuromuscular system such as stimulation of Ia afferents via spindle…little basic scientific research has examined vibration exercise effects on the function of different physiological properties…Of additionally paramount importance, contraindications have been reported, including erythema, itching of the legs, edema, and shin pain…
      “…vibration exercise was shown to compare with traditional resistance training in terms of overall strength adaptations…this tool should be viewed as a potential mode of training in appropriate exercise settings.”

      Vibration Training: Could It Enhance the Strength, Power, or Speed of Athletes?  Ian M. Wilcock, Chris Whatman, Nigel Harris, and Justin WL Keogh.  J Strength Cond Res 23: 593-603, 2009.
      “It is well known that an acute effect of mechanical vibration on muscles is that it can elicit a muscular reflex called the tonic vibration reflex…in theory, vibration causes the afferent neurons from the muscle spindles to become more sensitive to muscle stretch, which increases the activation of alpha motor neurons…may lead to increased motor unit recruitment, increased firing frequency, and/or improved synchronization, allowing a quicker and more forceful muscular contraction when the muscle is rapidly stretched…
      “There has been considerable research into the effects of long-term exposure to vibration in the workplace from an occupational health and safety perspective.  Long-term exposure has been shown to be detrimental, with the effects of WBV and handheld vibration causing vascular, peripheral, and central neurological, bone, joint, and muscle disorders…it seems that WBV training can be undertaken safely, although it is prudent to note the detrimental effects reported in the workplace because overexposure may see athletes reporting similar problems in the future…may need to be monitored for possible adverse effects of vibration training when their overall training volume and/or intensity is high…
      “Overall, there does not seem to be any detrimental effect on performance with the controlled use of vibration training in athletes.  There is some evidence that chronic vibration training by athletes may provide small benefit to maximal strength and power…The practicality of vibration training also should be taken into account in terms of time, cost, and reduction of other training for what we have observed to be a small benefit.”

      Acute Enhancement of Lower-extremity Dynamic Strength and Flexibility with Whole- Body Vibration.  Patrick L. Jacobs and Patricia Burns.  J Strength Cond Res 23, 51-61, 2009.
      “Whole-body vibration (WBV)…is characterized by oscillating motions delivered to the entire body that are hypothesized to elicit muscular activity via activation of stretch reflexes…
      “…the enhancement of power by WBV may have been induced by increased synchronization of the motor units, improved coordination of the synergist muscles, and/or antagonist inhibition…
      “Whole-body vibration seems to serve as a simple, effective, and time-efficient method of preparatory activity as compared with the warm-up strategies commonly recommended by leading fitness organizations…WBV has shown…immediate benefits in muscular performance, suggesting that this approach could effectively prepare an athlete from a resting state to a competitive state of readiness for either athletic training or competition.”

      “Complex training…the performance of a resistance exercise followed quickly by a plyometric exercise has been concluded to be as effective, if not more so, than strength and plyometric training done separately for the development of power…One issue that may arise in the conventional use…is muscular fatigue…To take full advantage of any benefit, muscular fatigue would need to be avoided…The use of WBV may be useful in elevating neurological performance without resulting in significant amounts of muscular fatigue…it seems that WBV has a significant effect on the neuromuscular system, such that the rate of force development is immediately enhanced…the vibration stimulus seems to influence the nervous system, increasing muscle tissue activation and synchronization.”

      Effects of Mechanical Vibration Applied in the Opposite Direction of Muscle Shortening on Maximal Isometric Strength.  Hosanna R Silva, Bruno P Couto, and Lexzek A Szmuchrowski.  J Strength Cond Res 22, 1031-1036, 2008.

      “Among the adaptive responses of the muscle, the neural responses play an important role in the strength gains resulting (from strength training)…Training may cause a decrease in impulses that inhibit the neuromuscular system, permitting improvements in muscle strength…Most studies about human responses to mechanical vibrations discuss whole-body vibrations and vibrations applied perpendicularly to the tendon or muscle…

      “Considering…that in eccentric activities, reflex mechanisms influence the production of strength, we hypothesized that vibration exposure in the opposite direction of muscle shortening may produce short eccentric effects that could add up to maximal voluntary contraction (MVC), increasing muscle strength by improvement of neural adaptation…one group performed conventional isometric strength training and another group isometric strength training with the addition of mechanical vibrations applied in the opposite direction of muscle shortening…

      “Despite the fact that we observed a significant increase in strength, in absolute terms, in both groups, group 2 (training plus mechanical vibrations) reached a significantly greater index of maximal isometric strength increase…which allows us to conclude that training with vibrations added resulted in higher neural adaptation than conventional isometric training…the improvement of strength obtained after training with vibrations was probably caused by optimization of involuntary mechanisms of muscle action through sudden and consecutive periods of eccentric action.”

      Summarizing the Studies
      • Too much vibration (industrial and occupational levels) can cause problems.
      • Limited amounts of vibration, 30-90 seconds in the exercise context, might cause problems, but seems to be generally safe. 
      • Vibration seems to offer at least similar benefits to conventional training, and maybe slightly better.
      • The benefits that come from vibration training are on the “neuro-“ side of “neuromuscular”.
      • The repeated, rapid switching between eccentric and concentric contraction, as the muscle tries to dampen the vibration, seems to be the unique aspect of this kind of training.

      For me, this wasn’t convincing enough to buy a several thousand dollar platform; but I was willing to take the general ideas and apply them to far less expensive tools like the Bodyblade ®, Bosu ®, and ball.

      How I Applied the Information

      Getting back to me, remember, my interest has been in more joint-friendly ways to train hard.  One of the benefits of vibration training not mentioned above is increased circulation to the joint.  As the vibration runs along the bone to the joints, the deep muscles that stabilize that joint contract to dampen the vibration and hold the joint together.  I wrote earlier that they contract “and relax”; actually, no.  They contract eccentrically, then concentrically, as opposed to contracting statically.  Conceptually, just like a biceps pumps as you raise and lower a curl, the circulation would increase in the deep muscles.  My thought was, do a vibration-type exercise (VTE) to increase the circulation to the joints, prior to the weight training exercise.  Another thought was since deep muscles have different functions based on limb position, more than one exercise was necessary.

      Learning curves being what they are, I started with doing the vibration-types separate from the weight routine.  Once I got the hang of the moves, I decided to try mimicking the weight training exercise, based on the idea that the best warm-up is a specific warm-up.   Using some of the ideas from the studies, I held back a bit on the pre-exercise, before going into the work set.  I was surprised to see how easy the work set became, but the studies do suggest why.  I found double benefit: the joint aches seemed to go away from the pre-exercise, and I was able to add weight to the work set.

      This, however, came back to haunt me, as I started to add so much weight, my joints started to hurt again!  So, another adjustment:  hold back on the work set, then add another set with the VTE for the maximum muscle effort.

      Why should this work?  Well, the discomfort during the work set with weights wasn’t in the first few reps; it was near the end, approaching “failure”.  “Failing” with the weight meant stalling, so the muscle effort was  applied against the joint, not to moving the weight; and usually accompanied by other muscles trying to substitute for the exhausted prime mover.  By putting the weight down, and resuming the same movement with the ‘blade, the joint stress was relieved, and since the weight of the ‘blade is negligible, the substitution stopped.  And since the ‘blade matches the effort of the prime mover (by flexing more or less based on your effort), it has the same effect as a partner-assist or weight reduction.  To use a dated term, it becomes “isokinetic”: it moves at a set speed and matches your effort.  Unlike isokinetic machines, however, there is no impact with the ‘blade.

      And In Conclusion

      I can’t honestly claim that this training has dramatically enhanced my physique or made me a better athlete.  I suspect diet and practice would be better options.

      I can say, however, that this type of training allows me train as regularly and as hard as I want, with a lot less joint stress.  I get the sensation of high effort, which registers as “a good workout” for the superficial muscles.  I protect the joints by theoretically increasing circulation to the joint and minimizing the mechanical disadvantage.  And if there is a benefit to the “neuro-“ side, in terms of coordination, quickness, or reflexes, more better for me.

      Exercise is only so useful if being obsessed with “progression” leads to injury or makes you dread training. 

      For me, “progress” in terms of amount of weight lifted is an obsolete standard.  As we age, “normal” is to decline; so, if the weights I handle stay the same, I’m ahead of normal.  The only way to maintain is to train regularly, and the way to train regularly is to avoid injury. 

       In the early stages of training, weight and reps are perfectly valid standards.  But once you are strong enough and big enough, you have to weigh the possible marginal benefits of increasing weight and reps vs. the additional discomfort and strain.  For me, I find it a lot more useful to “progress” in terms of control of muscular actions, and the Bodyblade®, Bosu®, and ball are ways of addressing this.



      Get the new Guide

      Once again, the guide is now available from Bill.  Anyone interested in buying a copy of "Optimal Exercise Guide: The Bodyblade Plus":  can get it, Paypal $20 US, $27 outside the US, including Priority Mail, to optimalexercise@comcast.net.)

      Tuesday, January 11, 2011

      Bill DeSimone video.....

      Anthony (Dream) Johnson introduces Bill DeSimone to talk about the Leg Press and Squat......we are not built to barbell squat......  UPDATE - 13 January - Check out Bill's new manual, with an extract here



      You will remember that I did an interview with Bill here, and I have something special coming from him shortly......

      Sunday, April 11, 2010

      An interesting new protocol

      John Little - co-author of Body By Science - is developing a new training protocol that is based on some interesting ideas.



      He has called it The Max Pyramid Protocol - blending isometric /static contractions , high intensity training and also the congruent exercise ideas of Bill DeSimone.

      There is some discussion of the idea in the comments here

      For some background I have previously interviewed John Little and Bill DeSimone.

      I have some thoughts on this and may share later...

      Tuesday, December 29, 2009

      How to shovel snow!


      This video from Bill is appropriate to the UK at the moment. Here is a photo I took on a scary drive south last week. I wanted to get to my parents so that I could accompany them to a hospital appointment - more on that later maybe - but the state of the roads almost prevented that. After the first 30 odd miles things improved, but I almost turned back a couple of times.

      Any way, here is the great Bill DeSimone on how to shovel snow properly!