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Back Pain Myths: Posture, Core Strength, Bulging Discs

January 26, 2016/9 Comments/in Massage, Massage Clinic, Massage Therapist, Massage Therapy /by Todd Hargrove

It is an article of faith among many mainstream experts that poor posture, lack of core strength, and/or structural abnormalities such as bulging discs are major causes of pain, especially back pain. A further assumption is that by working to correct these issues, through stretching or strengthening, or postural retraining, or surgery, pain will decrease. It is probably fair to say that the majority of physical therapy and corrective exercise done in this country is based on exactly these assumptions. Although these ideas have a common sense appeal, there is significant evidence questioning this approach. Here’s a brief review of the conflicting evidence.*

Posture

You have probably heard the claim that bad posture causes back pain, or that you should try to improve your posture to get rid of low back pain.

You can find this claim all over the internet – from physical therapists, chiropractors and personal trainers. If you do a Google search for “posture and pain,” you get 4 million hits.

With so many posture police on patrol, it is a near certainty that you will sooner or later be told by some authority that your posture needs work.

For example, if you go to a physical therapist with low back pain and a large curve in your low back, you may be told that you need to correct this by sucking in your gut, squeezing your glutes, tucking your tail, or strengthening your core. If you have upper back pain and a sunken chest, you may be told to pinch back your shoulder blades, strengthen your scapular retractors, stretch the chest, and raise the sternum.

These ideas have intuitive appeal, and are advocated by numerous experts. But are they supported by evidence? And should you spend time trying to analyze your own posture and make corrections? Let’s look at some evidence that might help us answer these questions.

In one study, researchers looked at the posture of teenagers and then tracked who developed back pain in adulthood. Teenagers with postural asymmetry, thoracic kyphosis (chest slumping) and lumbar lordosis (overly arched low lack) were no more likely to develop back pain than others with “better” posture.

Another study looked at increases in low back curve and pelvic angle due to pregnancy. The women with more postural distortion were no more likely to have back pain during the pregnancy. A systematic review of more than fifty four studies found no good evidence of a correlation between posture and pain. Leg length inequality seems to have no effect on back pain unless it is more than 20 mm (the average leg length difference is 5.2 mm). Hamstring and psoas tightness do not predict back pain.

These results are particularly striking given that many studies have quite easily found other factors that correlate well with low back pain, such as exercise, job satisfaction, educational level, stress, and smoking. Although some studies have found a correlation between back pain and posture, it is important to remember that correlation does not equal causation. It may be pain is causing the bad posture and not the other way around. This is a very likely possibility. People will spontaneously adopt different postural strategies when injected with a painful solution. Big surprise!

Based on the above, there is little evidence to support the idea that we can explain pain in reference to posture or that we can cure pain by trying to change posture. For more articles on posture, click here.

Disc Degeneration, Bulging Discs, And Other MRI Abnormalities

Another common idea is that herniated discs or other degenerative changes revealed by MRI are major causes of back pain. Many people who learn of these structural changes will assume it is the cause of their pain and start to consider surgery as a solution. However, numerous studies show that many types of structural abnormalities are poor predictors of pain.

In one famous study, MRIs were performed on subjects who did not have back pain. Fifty two percent of the subjects had at least one bulging disc or other MRI abnormality for which surgery is sometimes recommended. Given these findings, the authors stated that: “the discovery by MRI of bulges or protrusions in people with low back pain may frequently be coincidental.” In a similar study, MRIs on individuals who had never suffered from low back pain revealed that one third had a substantial spinal abnormality and 20% under the age of 60 had a herniated disc.

In a study of pain free hockey players, seventy percent were found to have abnormal pelvis or hip MRIs, and fifty four percent had labral tears. The author stated that “this study shows the limitations of depending too heavily on an MRI. A surgeon may see something in the image, but it isn’t causing a problem.”

In this study, researchers examined forty four volunteers, age 20-68, with no history of knee pain. Sixty percent showed abnormalities in at least three of the four regions of the knee, causing the authors to conclude that “meniscal degeneration or tears…are highly prevalent in asymptomatic individuals.”

Studies of active baseball pitchers or overhead athletes consistently demonstrate very large percentages (over seventy percent) of torn labrums and rotator cuffs.

These are all issues for which surgery is sometimes recommended.

This is not to say that herniated discs, torn labrums or other structural abnormalities cannot cause pain. Of course they can, and you would rather have less damage than more. But if a large percentage of pain free people have bulging discs, then how likely is it that a bulging disc is the cause of your back pain? If you look close enough at almost any joint in the body, you will find something wrong with it. Don’t assume that whatever shows up on the MRI is the source of your pain. For more on the poor correlation between MRI results and pain, click here.

Core Strength And Back Pain

The idea that good core strength is essential for a healthy back is another ubiquitous idea. What is the evidence that poor core strength causes pain or that core strength exercises reduce back pain?

Before reviewing the studies, it is first interesting to note that most of life requires only minimal activation of the core musculature. During walking, the rectus abdominis has an average activity of two percent of maximal voluntary contraction, and the external oblique operates at five percent. During standing, trunk flexors and extensors are estimated to fire at less than one percent. Add more than fifty pounds to the torso and they fire at three percent. During bending and lifting muscular activation is similarly low. Given that daily life seems to require so little core strength, perhaps it is not surprising that research interventions to increase core strength have little effect on pain.

Here’s another quick reality check before moving on to some research: ever noticed a heavily muscled person with massive core strength who has lots of back pain? Or a skinny weak person with none?

Now let’s look at some research. One study showed that core strengthening exercises for pain free persons identified as having a weak core do not reduce the future likelihood of back pain. Numerous studies have been performed to test whether core strength exercises reduce back pain. The thrust of these studies is clear – although core exercise can improve low back outcomes, it is no better than general exercise. The obvious conclusion is that if core strengthening has benefit, it works because of the generally beneficial effects of exercise (or as a placebo), not because lack of core strength or poor firing patterns are a major cause of of back pain. In other words, despite what we are told over and over, the current evidence states that there is nothing magic about core strength as means to prevent or reduce back pain.

Conclusions

The above results are surprising and counterintuitive, and raise many questions such as: why do these approaches seem to work; how can so many people be wrong; and if these aren’t the true sources of pain, then what is?

For more information to answer some of these questions, I recommend clicking on the Posture and Pain links above for relevant articles.

*Most of the studies referenced in this article are from three excellent papers: The Myth of Core Stability by Eyal Lederman; The Fall of the Postural Structural Model in Manual and Physical Therapies by Eyal Lederman; and The Traditional Mechanistic Paradigm in the Teaching and Practice of Manual Therapy: Time for a Reality Check, by Frederic Wellens.

Todd Hargrove

Todd Hargrove is a Certified Feldenkrais Practitioner and a Certified Rolfer living and practicing in Seattle. He became interested in movement and pain twenty years ago, when as a lawyer, he was trying to treat his own chronic pain and win more squash matches. He got some great results, and eventually changed careers to help others make similar improvements. In 2008 he started writing a blog at bettermovement.org to share knowledge with a wider audience. His writing seeks to explain why pain science and neuroscience is relevant to manual and exercise therapists. He recently published a book called “A Guide to Better Movement: The Science and Practice of Moving with More Skill and Less Pain”.

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Todd Hargrove
Todd Hargrove is a Certified Feldenkrais Practitioner and a Certified Rolfer living and practicing in Seattle. He became interested in movement and pain twenty years ago, when as a lawyer, he was trying to treat his own chronic pain and win more squash matches. He got some great results, and eventually changed careers to help others make similar improvements. In 2008 he started writing a blog at bettermovement.org to share knowledge with a wider audience. His writing seeks to explain why pain science and neuroscience is relevant to manual and exercise therapists. He recently published a book called “A Guide to Better Movement: The Science and Practice of Moving with More Skill and Less Pain”.
Todd Hargrove
Follow Him
Latest posts by Todd Hargrove (see all)
  • Play Involves Risk - March 22, 2021
  • Posture, Babies, And Bathwater - January 25, 2021
  • What Kind of Exercise is Healthiest? - November 17, 2020
Tags: Massage, Massage Clinic, Massage Therapist, Massage Therapy, Pain Science, Posture
https://themtdc.com/wp-content/uploads/spine.png 400 600 Todd Hargrove https://themtdc.com/wp-content/uploads/logo.svg Todd Hargrove2016-01-26 15:20:132020-08-20 12:22:00Back Pain Myths: Posture, Core Strength, Bulging Discs
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9 replies
  1. Melissa
    Melissa says:
    May 17, 2016 at 10:14 pm

    This is a great well detailed written article! Thankyou so much for sharing! I learned alot! Keep posting thankyou! :)

    • Jamie Johnston
      Jamie Johnston says:
      May 18, 2016 at 3:34 pm

      Hey Melissa thanks for reading. Todd writes a lot of great articles, make sure you check out his site http://www.bettermovement.org it’s well worth your time.

  2. Gibson Aaron
    Gibson Aaron says:
    April 24, 2017 at 11:27 pm

    Thanks Todd for sharing. You are spot on. Most of the people (including me) do believe whatever information the internet throws at you without doing extensive research. People should consult their doctor before applying intense changes in their work routine.

  3. Robert
    Robert says:
    July 12, 2017 at 6:25 am

    These overly simplistic statements speak more to the inadequaicies of physical medicine research and the fallacy of lining correlation to causality. Better to build on your expertise than to bash other approaches. Good luck.

  4. Jeff Sims
    Jeff Sims says:
    October 22, 2017 at 11:59 pm

    From the blog:

    For example, if you go to a physical therapist with low back pain and a large curve in your low back, you may be told that you need to correct this by sucking in your gut, squeezing your glutes, tucking your tail, or strengthening your core. If you have upper back pain and a sunken chest, you may be told to pinch back your shoulder blades, strengthen your scapular retractors, stretch the chest, and raise the sternum.

    These ideas have intuitive appeal, and are advocated by numerous experts.

    ========

    Please identify some of these experts. Thanks. I want to make sure I understand. I don’t remember reading or hearing anyone advocating these ideas. Thank you.

    • Jamie Johnston
      Jamie Johnston says:
      October 23, 2017 at 12:44 pm

      Hey Jeff, I don’t think Todd was pointing out any one therapist or expert specifically, rather that those ideas are quite prevalent within our fields.

  5. Deane Juhan
    Deane Juhan says:
    October 24, 2017 at 12:27 pm

    Yes, I can state from my own 40 years of experience as a bodyworker (The Trager Approach and my own Resistance and Release Work) that strengthening merely through exercise is often not the answer. I find that merely relieving pressurizing muscular tension and actively re-coordinating the muscles involved leads to dramatic results in the reduction of pain and the restoration of better organized and supporting posture and movement.
    I don’t think that poor posture is irrelevant. Even if it does not correlate well with pain syndromes, it does create chronic muscular tension as the body has to increase tension and tone to support off-balance, cantilevered body weight, causing tensional compensations from head to toe. But I do find that reaching the mind with the FEELING of more ease in posture and movement far more effective than shoving tissue around to achieve some ideologically assumed model of “optimal” posture. There is no “optimal” posture as a static model of “correct alignment.” What is needed is freer movement and continual adjustment to the ever-changing kaleidoscope of body weights shifting in the gravitational field as we go about our daily lives. Given the sensory awareness of the body’s responses to gravity (entailing 90% of the nervous system, as assessed by Roger Sperry, Nobel prize winner in neurology!), and the re-education of more coordinated, organized movement, the mind will guide the body toward better and better relationships with gravity and shifting tensions. It is the mind that must be reached, not preconceived models of optimal this or that. The mind and all its motor control mechanisms, is designed–given a chance through heightened sensory awareness and self-regulation–to provide us with ease and effectiveness in movement to continue to steer us toward pain-free activity.

  6. Marcus
    Marcus says:
    December 6, 2017 at 7:28 am

    Enjoyed reading this!

    I have dealt with a lot of back pain before and I believe doing too many core strengthening exercises was the problem haha.

  7. Mike Menkes
    Mike Menkes says:
    April 14, 2019 at 2:53 pm

    I have had 100’s low back pain resolved in 2 ways:
    1. My simple cranial treatment
    2. Tight psoas release.

    I have an orthopedist surgeon client who showed me a lateral full spinal image on his light box.
    “What do you see?”
    “I see compressed cervical and lumbar discs.”
    “Mike, what do you think this patient is feeling?”
    “Pain in both places?”
    “Mike, this patient is asymptomatic. Chiropractors would misread this Xray and have this patient sold into a long term ‘plan’ of high-velocity ‘care’ to ‘prevent paralysis.”
    Stewart Eidelson, MD.

Comments are closed.

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Todd Hargrove

Todd Hargrove is a Certified Feldenkrais Practitioner and a Certified Rolfer living and practicing in Seattle. He became interested in movement and pain twenty years ago, when as a lawyer, he was trying to treat his own chronic pain and win more squash matches. He got some great results, and eventually changed careers to help others make similar improvements. In 2008 he started writing a blog at bettermovement.org to share knowledge with a wider audience. His writing seeks to explain why pain science and neuroscience is relevant to manual and exercise therapists. He recently published a book called “A Guide to Better Movement: The Science and Practice of Moving with More Skill and Less Pain”.

  • Author
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Todd Hargrove
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Todd Hargrove
Todd Hargrove is a Certified Feldenkrais Practitioner and a Certified Rolfer living and practicing in Seattle. He became interested in movement and pain twenty years ago, when as a lawyer, he was trying to treat his own chronic pain and win more squash matches. He got some great results, and eventually changed careers to help others make similar improvements. In 2008 he started writing a blog at bettermovement.org to share knowledge with a wider audience. His writing seeks to explain why pain science and neuroscience is relevant to manual and exercise therapists. He recently published a book called “A Guide to Better Movement: The Science and Practice of Moving with More Skill and Less Pain”.
Todd Hargrove
Follow Him
Latest posts by Todd Hargrove (see all)
  • Play Involves Risk - March 22, 2021
  • Posture, Babies, And Bathwater - January 25, 2021
  • What Kind of Exercise is Healthiest? - November 17, 2020
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