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A study on the shaping efficacy grading model of underbust corsets based on three-dimensional body scanning

The aim is to establish a shaping efficacy grading model for underbust corsets by exploring the pressure and shaping efficacy. Nine Chinese female college students aged 20–25 years old were employed in the pressure test and shaping efficacy experiment. In the pressure test, the pressures were measured at 31 points before and after wearing underbust corsets. In the shaping efficacy experiment, participants underwent three-dimensional body scanning before and after wearing underbust corsets. By analyzing the relationship between the pressure and shaping efficacy of underbust corsets, a shaping efficacy grading model characterized by pressure was established using the indirect grading method: when the comprehensive pressure values of the underbust circumference (UBC), waist circumference (WC) and abdominal circumference (AC) are 0–1.8, 1.8–2.4 and 2.4–3.4 kPa, the shaping efficacy of underbust corsets should be Grades I, II and III, respectively. Finally, the applicability of the grading model obtained is discussed, and the optimized model of underbust corsets based on the average pressure values is established: when the average pressure values of the UBC, WC and AC are 0–1.4, 1.4–2.1 and 2.1–3.4 kPa, the shaping efficacy of underbust corsets should be Grades I, II and III, respectively.