Abstract
<jats:p>This paper substantiates a constructive principle of an instrument-type shaping corset intended for systematic waist training under conditions of repeated and controlled compression. The proposed solution is based on engaging the textile material as an active load-bearing component within the force scheme of the product and on forming controlled compression in the waist zone without the use of multilayer padding, adhesive interlinings, or additional reinforcing systems that increase structural thickness. In contrast to traditional corset constructions, where the perception of mechanical loads is concentrated primarily in localized stiffening elements and the textile material performs mainly a shell or covering function, the proposed approach considers the fabric as an integral structural element involved in load transfer and distribution. The functions of shaping and load perception are functionally separated by combining an oriented load-bearing part of the construction with shaping relief elements that ensure the required spatial geometry of the product above and below the waistline but do not perform an independent structural role. Controlled compression is achieved within a single-layer-type corset through a design methodology based on the target waist circumference and through the constructive integration of stiffening elements into the unified force scheme of the product. Specially organized structural nodes provide the joint operation of the reinforcing elements and the load-bearing textile base, ensuring uniform stress distribution and reducing the concentration of local deformations during intensive use. Evaluation of the operational behavior of the constructed sample confirmed the geometric stability of the corset, the predictable performance of the stiffening ribs, and the controlled nature of their force behavior. Stable spatial orientation of the reinforcing elements limits deformation predominantly to a single plane, which is essential for maintaining structural integrity and ensuring reproducible compression characteristics during repeated and prolonged waist training.</jats:p>