BIOMECHANICAL RESPONSE OF A LEFT DELTOID MODEL TO BOWEN TECHNIQUE STIMULI

Adrian Ioan BOTEAN, Dan Marius GHERASIM, Mariana ARGHIR

Abstract


This study analyzes the distribution of mechanical stresses in the left deltoid muscle using photoelasticimetry, an advanced experimental method based on the accidental birefringence property of optically active materials. Anatomical models made of epoxy resin (EP14NV) were fabricated to replicate healthy human geometry, simulating manual stimuli from Bowen therapy. Three rigid models (M1–M3) were statically loaded (13.42–28.12 N), and stress fields were analyzed using a circular polarization polariscope. The results revealed distinct isochromatic fringe patterns, quantitatively correlating load magnitude with stress propagation in the anterior/posterior fascicles. While the study confirms the utility of photoelasticity in biomechanical modeling, limitations such as the absence of real viscoelasticity highlight the need for model refinement. The results demonstrate a direct correlation between load magnitude and stress propagation in the anterior/posterior fascicles, suggesting optimal force ranges for Bowen Therapy applications. This validates photoelasticimetry as a tool for non-invasive therapy assessment. This research opens new perspectives in the assessment of non-invasive muscle therapies

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