Bodywork Application and Physiology Flashcards

A client presents with chronic low back pain and mentions they recently began a course of systemic corticosteroids for an autoimmune condition. Which physiological consideration most directly affects your choice of massage depth and pressure?

Answer: Prolonged corticosteroid use suppresses fibroblast activity and reduces collagen synthesis, increasing tissue fragility

Long-term systemic corticosteroid use inhibits fibroblast proliferation and collagen synthesis, resulting in connective tissue atrophy and reduced tensile strength. This increases the risk of microtrauma or bruising with deep or sustained pressure, necessitating lighter work and careful monitoring of tissue response.

During a session focused on the posterior compartment of the lower leg, you apply sustained compression to the soleus and notice the client's foot begins to plantarflex involuntarily. Which neurological mechanism best explains this response?

Answer: Stimulation of muscle spindle Ia afferents evoking a monosynaptic stretch reflex arc

Sustained compression can mechanically deform or stretch intrafusal fibers within muscle spindles, activating Ia afferent fibers. These primary afferents synapse monosynaptically onto alpha motor neurons in the spinal cord, producing an excitatory contraction (stretch reflex) in the same muscle — in this case, plantarflexion via the triceps surae group.

A massage therapist is working with a competitive cyclist who has undergone arterial bypass surgery of the left femoral artery six months ago and has been cleared for massage. Which application principle is MOST critical when addressing the left quadriceps?

Answer: Using distal-to-proximal strokes cautiously and avoiding sustained deep pressure directly over the graft site

In clients post-vascular surgery, the bypass graft is situated adjacent to or within the musculature. Distal-to-proximal effleurage is generally preferred to support venous return, but sustained deep pressure directly over the graft site risks compromising graft integrity or triggering vasospasm. Six months post-op with medical clearance allows gentle work, but the practitioner must know the graft location and apply pressure thoughtfully to surrounding—not directly over—the surgical area.

When performing myofascial release on the thoracolumbar fascia, a practitioner holds a sustained load at the elastic barrier for 90–120 seconds. The tissue then yields and the practitioner senses a 'release.' Which tissue property most accurately describes the mechanism enabling this yield?

Answer: Viscoelasticity — time-dependent creep allows the tissue to elongate under sustained constant load

Fascia exhibits viscoelastic behavior, meaning its deformation is both elastic (recoverable) and viscous (time-dependent). Under sustained constant load, the viscous component allows slow, progressive elongation known as creep. The 90–120 second hold exploits this creep response, enabling the tissue to yield without requiring forces that would cause plastic (permanent, structural) failure. Thixotropy and piezoelectricity are proposed but lack the same level of mechanistic support for the clinical 'release' sensation.

A practitioner applies rhythmic effleurage to a client's upper extremity and notices the client's heart rate decreases from 82 to 71 bpm over 10 minutes. Which afferent pathway is most likely mediating this cardiovascular response?

Answer: C-tactile (CT) afferents in hairy skin activating insular cortex pathways that upregulate parasympathetic outflow

C-tactile (CT) afferents are unmyelinated mechanoreceptors in hairy skin optimally responsive to gentle, slow stroking — precisely the stimulus effleurage provides. CT afferents project to the insular cortex and are linked to affective touch processing, which activates the parasympathetic nervous system and increases vagal tone, slowing heart rate. This pathway explains the well-documented parasympathetic shift observed during slow, nurturing massage strokes.

A client with a confirmed diagnosis of fibromyalgia reports central sensitization and widespread allodynia. You plan to use manual therapy. Which application strategy is BEST supported by the neurophysiology of central sensitization?

Answer: Using slow, gentle, broad-contact techniques to activate descending inhibitory pathways via conditioned pain modulation

Central sensitization in fibromyalgia involves augmented dorsal horn excitability and impaired descending inhibition. Slow, gentle, broad-contact manual therapy activates the CT afferent system and may engage conditioned pain modulation (CPM) — a mechanism by which one non-noxious stimulus activates descending inhibitory pathways (serotonergic/noradrenergic) to reduce central pain amplification. Deep, intense techniques risk further stimulating sensitized nociceptors and exacerbating wind-up, while HVLA is contraindicated given widespread pain hypersensitivity.