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All Pain is Not Created Equal

I’m aware this may be an unpopular statement, but I don’t completely agree with the idea of pain-free bodywork.

In an environment that promotes relaxation under the guidance and reassurance of a qualified bodywork professional, I believe a client’s brain can be trained to associate slow, precise, graded-exposure stretching maneuvers with security instead of pain. Pain is essentially a threat warning, so pain exposure therapy (PET) requires time for the brain to process these bodily changes.

In the myoskeletal application of PET, therapists and clients use active feedback while working at the feather edge of the client’s painful barrier, just above comfort level. Muscle energy, fascial hook, and pin-and-twist maneuvers, such as those demonstrated in Images 1–3, encourage the client to engage the painful barrier with active movements and gradually push the discomfort level a bit further with each repetition. By progressively introducing stretch to areas that have been problematic in the past, the nervous system begins associating the new movement with safety instead of pain.

Image 1: With the client’s hip flexed, the therapist slowly extends the knee to the first restrictive pain barrier. The client gently knee flexes against the therapist’s resistance to a count of five and relaxes. Working with the client’s nervous system, the therapist again extends the knee to the feather edge of the painful barrier and repeats the action until functional range of motion is restored.

 

Image 2: The therapist’s extended fingers hook the constricted tissue and stretch to the first painful restrictive barrier. The client performs slow pelvic tilts while the therapist gradually increases pressure working with the central nervous system at the feather edge of pain.

 

Image 3: The therapist’s left hand braces the client’s arm against their body and pins the restricted pectoralis minor muscle with their right elbow. The client’s arm is taken to the first restrictive external rotation barrier. They are instructed to deeply inhale while the therapist’s right elbow holds constant pressure. The client controls the degree of discomfort by exhaling (to decrease) or inhaling (to increase). Repeat until the protective guarding is reduced.

Throughout a series of sessions, I’ve noticed a marked decrease in protective muscle guarding, and an increase in pain tolerance and joint range of motion when following these key guidelines:

  • Create a safe environment with active client feedback and participation.
  • Work at the feather edge of the painful restrictive barrier, and introduce graded-exposure stretches to diminish discomfort.
  • Include novel stimuli during sessions by exploring new movement patterns that attract and hold the brain’s attention.
  • Offer home-exercise suggestions that reinforce the new movement patterns.

Image 4: Gate control theory of pain

How does Pain Exposure Therapy work?

We’ve all seen how pain can reduce strength, flexibility, and endurance, as well as create a sense of fatigue. The brain is trying to do anything it can to avoid what it believes may cause injury. With

a built-in adaptive mechanism, it can determine whether the body needs less or more protection at any given time. There is little doubt that traditional stretching routines produce an immediate increase in muscle extensibility due to the viscoelastic nature of muscle, but these effects quickly dissipate. The more permanent extensibility seen in PET is likely the result of two factors: the client’s willingness to tolerate the discomfort associated with stretch, and muscle, ligament, and joint pain gating.

According to the gate control theory, pain sensations are affected by descending modulatory influences from the brain, which can make the stretch either more or less sensitive to pain (Image 4).1 When danger-signaling nociceptors are stimulated by excessive stretch, mechanical compression, and inflammation, the stimuli are fast-tracked to different parts of the brain. The brain then quickly interprets the information based on things such as prior therapeutic experiences, elevated mood, and confidence from positive expectations of stretch benefits. If performed correctly, afferent input from muscle and joint mechanoreceptors during a stretch can interfere with danger signals and inhibit an individual’s perception of pain.

For example, during a forward-bending hamstring stretch, the farther the person bends forward (stretch torque), the closer they can reach toward their toes. This results from mechanoreceptive pain gating in the hip and low-back joints, as well as an increased willingness to tolerate the discomfort associated with the stretch. The controlled manipulation of tissue and facilitated movement during PET offer added safety from overstretching into the painful barrier by providing tactile feedback that prevents the brain from guarding the area with protective muscle spasms.

Several steps can be taken to further avoid exasperating a client’s symptoms during PET. First, practitioners must develop subtle palpation skills to differentiate quality, range, and end-feel when assessing soft tissues such as ligaments, muscles, fascia, and particularly joint capsules. Mentally ask yourself the following questions: During end-range of motion, does this tissue have a boggy, leathery, spasmodic, or hard end-feel? When comparing side to side, are there areas of bind in one limb and greater ease of movement in the other?

Efficiency of movement and improved function are the desired outcomes of any bodywork strategy. Tension, trauma, and even overly aggressive bodywork can result in excessive soreness and stiffness, which compromises fluid movement. Such stiffness typically results from nonoptimal neuromuscular firing due to altered brain maps, rather than passive stiffness based on adhesions, scar tissue, or degenerative changes. Remember that the body’s physical and mental states interact bidirectionally, so we can decrease pain by moving better, and we can move better by decreasing pain.

SUMMARY
A PET desensitization approach is aimed at normalizing sensation by providing consistent stimulus to the affected area for short periods of time. The brain will respond to this sensory input by acclimating to the sensation, thereby gradually decreasing the body’s pain response to the particular stimuli. Good clinical assessment and the appropriate application of PET, combined with self-care advice, can be successfully used in conjunction with other therapies to build an effective pain-management program.

Notes
1. R. Melzack and P. D. Wall, “Pain Mechanisms: A New Theory,” Science 150 (1965): 971–9.

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