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 anatomyModerators: Moderators Jump to page : 1 Now viewing page 1 [25 messages per page] | View previous thread :: View next thread |
| Yoga -> Iyengar Yoga | Message format |
fechter03 |
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Extreme Veteran Posts: 475   Location: canada | |||
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| fechter03 |
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Extreme Veteran Posts: 475 Location: canada | |||
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| Nick |
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  Location: London, England | Hi Fechter, It is quite common for people to feel like they have more flexibility in the hamstrings when lying down-i think this is because, firstly, the back muscles are more relaxed than when sitting, and secondly, it is easier to tilt the pelvis when lying down-also , you may not be so aware of any slight bend in the knee, because you havent got the floor behind the knee. When a therapist measures hamstring length, they are very carful to immobolize the back, pelvis, and knee, so that true hamstring length is recorded, rather than the patient merely flattening the back, tiliting the pelvis or bending the knee. Perhaps the easiest way to answer your question is by saying that humans tend to use economy of effort when they move-because it is easier to round the spine than flexing the pelvis, which would stretch the hamstrings much more (notoriously tight muscles), then most people would opt for rounding the back. You can see this happen when many people try to lift something from the floor-bad lifting technique is when the back rounds and the hips stay extended-good lifting technique is when we bend at the ankle, knee and hip, instead of the spine. If you think about it, in many forward bends, we are taking hold of the feet as though we are lifting something from the floor-so potentially a foward bend with a rounded back could damage the spine by compressing the front of the intervetebral disc, causing disc herniation or damage to the vertebral body. In essence, therefore, learning to do a good forward bend is essentially learning good lifting technique-one reason why it is not good to learn to extend the knees to quickly for beginners, and why it is a good idea for even advanced students to warm up with the knees slightly bent, specially first thing in the morning. Hope this makes sense, complain if it doesn't  Nick | ||
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| fechter03 |
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Extreme Veteran Posts: 475 Location: canada | |||
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| Nick |
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Location: London, England | Hi Fechter, Good question-because a backbend extends the spine and compresses the facet joints (synovial joints on the back of the spine), and also compresses the disc so that fluid within the disc is squeezed forwards, I would predict that disc herniation proper would not occur. But there are all sorts of other things-Schnorls nodes, which is pitting of the vertebral body caused by the excessive compression of the discs, are something I would expect to find in the spine of someone who had been practicing yoga 'badly' for any length of time. It would be interesting to lok at the spines of people who have practiced yoga, but you will appreciate, very difficult to do! Also not much good telling a dead person that they should have done yoga differently  I would guess that when a backbend hurts, it is perhaps due to facet joint compression, causing irritated nerves to step up their output, resulting in pain. It is often the people with existing back problems who are the most likely to complain of pain when we do backbends in class. This points to a continueing pathology which has disposed the spine to sensitivity when they attempt to extend their spines. You wil also often see the same people go into a child pose between each backbend, as they try to separate the facet joints which have been excessively compressed during the backbend-it's a giveaway! You will also often find that the erector spinae muscles are tight in these people, and this will add to the compression of the facet joints-like tightening the string on an archer's bow, the curve of the back will increase as the muscles are shortened. So there may also be pain from the irritation of these muscles. There may also be a problem with squeezing the spinal nerves as they exit the spine through holes that are called 'intervertebral foramina.' Extending the spine may cause the foramina's circumference to reduce-what happens then is under investigation, but I believe that the neuronal pool that is responsible for that region of the spine is fed fake information about spinal position and then aligns the spine towards what the pool believes is good posture, but has been given the wrong map with which to find good posture-so the spine is held in bad posture, which then causes pain for various reasons. Chiropractic and osteopathic adjustments, are, in my humble opinion, most likely to be successful if they succeed in tuning the neuromal pool so that it sned the correct message to align the spine. The same goes for yoga, again, in my humble opinion. Nick | ||
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| SCThornley |
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| Nick |
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Location: London, England | Hi Steven, You are so right-am in the process of completing an initial chapter to send off, have completed all the other chapters, but they need to be clarified and illustrated. Not sure how much time this will take, but I hope the end product will be worth it. I take the view that For us to succeed in our yoga practice, we would ideally take a Russian approach to training their ahtletes, where the athlete becomes an expert at every aspect of his/her body which could enhance their ability/performance/health. I therefore hope that the book will be useful to both teachers and students, and wil help both to become expert in alignment and techniques which may serve to preserve the ideal of good posture. In this way, I hope to place the emphasis on the student's understanding, so that they can aim more successfully towards an ideal posture or movement. This goes against what people are telling me, in that I should be more specific in who I am aiming the book at, but I believe that this will help students understand what their teachers are telling them, and help teachers understand what they are telling their students-hopefully this will all work out, I'll keep you posted Nick | ||
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| loli |
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| Nick, you're book sounds just like the one I am constantly looking for. Please put my name down for one. | |||
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| Nick |
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Location: London, England | Hey there, Sure but don't hold your breath-two lifetimes at least!! Nick | ||
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| zzzuluwarrior |
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| Nick |
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Location: London, England | Hi Zzulu, I'm not sure if he would remember my name either-what he will remember is the advanced class in the afternoon on cowley road-I was the only man-sorry, that's even harder than remembering my surname-but i imagine it would jog his memory-I think yoga teachers might rememeber by associating stuff with their classes Wil check out kofi's festival-was he well? Nick | ||
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