To put it bluntly, it’s not clear that massage has any musculoskeletal benefits at all. It probably does, but mostly quite temporary and highly unpredictable. There’s not nearly enough science, and therapists are hopelessly biased assessing their own efficacy. See Does Massage Therapy Work? A review of the science of massage therapy … such as it is. BACK TO TEXT
Massage has been shown to reduce neuromuscular excitability by measuring changes in the Hoffman's reflex (H-reflex) amplitude. A decrease in peak-to-peak H-reflex amplitude suggests a decrease in motoneuron excitability. Others explain, "H-reflex is considered to be the electrical analogue of the stretch reflex...and the reduction" is due to a decrease in spinal reflex excitability. Field (2007) confirms that the inhibitory effects are due to deep tissue receptors and not superficial cutaneous receptors, as there was no decrease in H-reflex when looking at light fingertip pressure massage. It has been noted that "the receptors activated during massage are specific to the muscle being massaged", as other muscles did not produce a decrease in H-reflex amplitude.
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