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Influence of Bra Band Tension and Underwire Angles on Breast Motion

Authors: Cheuk Wing Lee, Kit Lun Yick, Sun Pui Ng, Joanne Yip

Abstract:

Daily activities and exercise may result in large displacements of the breasts, which lead to breast pain and discomfort. Therefore, a proper bra design and fit can help to control excessive breast motion to prevent the over-stretching of the connective tissues. Nevertheless, bra fit problems, such as excessively high tension of the shoulder straps and a tight underband could have substantially negative effects on the wear comfort and health of the wearer. The purpose of this study is to, therefore, examine the effects of bra band tension on breast displacement. Usually, human wear trials are carried out, but there are inconsistencies during testing. Therefore, a soft manikin torso is used to examine breast displacement at walking speeds of 2.30 km/h and 4.08 km/h. The breast displacement itself is determined by using a VICON motion capture system. The 3D geometric changes of the underwire bra band tension and the corresponding control of breast movement are also analyzed by using a 3D handheld scanner along with Rapidform software. The results indicate that an appropriate bra band tension can help to reduce breast displacement and provide a comfortable angle for the underwire. The findings can be used by designers and bra engineers as a reference source to advance bra design and development.

Keywords: Bra band, bra features, breast displacement, underwire angle.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.2571807

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References:


[1] K.-A. Page and J. R. Steele, “Breast motion and sports brassiere design,”. Sports Medicine, vol. 27, no. 4, pp. 205-211, 1999.
[2] A. R. Greenbaum, T. Heslop, J. Morris and K.W. Dunn, “An investigation of the suitability of bra fit in women referred for reduction mammaplasty,” British Journal of Plastic Surgery, vol. 56, no. 3, pp. 230-236, 2003.
[3] M. Lu, J. Qiu, G. Wang and X. Dai, “Mechanical analysis of breast–bra interaction for sports bra design,” Materials Today Communications, vol. 6, pp. 28-36, 2016.
[4] B. R. Mason, K.-A. Page and K. Fallon, “ An analysis of movement and discomfort of the female breast during exercise and the effects of breast support in three cases,” Journal of Science and Medicine in Sport, vol. 2, no. 2, pp. 134-144, 1999.
[5] D. E. McGhee and J. R. Steele, “Breast elevation and compression decrease exercise-induced breast discomfort,” Medicine and Science in Sports and Exercise, vol. 42, no. 7, pp. 1333-1338, 2010.
[6] K. A. Bowles and J. R. Steele, “Effects of strap cushions and strap orientation on comfort and sports bra performance,” Medicine and Science in Sports and Exercise, vol. 45, no. 6, pp. 1113-1119, 2013.
[7] C. E. Coltman, D. E. McGhee and J. R. Steele, “Bra strap orientations and designs to minimise bra strap discomfort and pressure during sport and exercise in women with large breasts,” Sports Medicine Open, vol. 1, no. 1, pp. 21, 2015.
[8] H. Y. Lee and K. Hong, “Optimal brassiere wire based on the 3D anthropometric measurements of under breast curve,” Applied Ergonomics, vol. 38, no. 3, pp. 377-384, 2007.
[9] H. Y. Lee, K. Hong, and E. A. Kim, “Measurement protocol of women's nude breasts using a 3D scanning technique,” Applied Ergonomics, vol. 35, no. 4, pp. 353-359, 2004.
[10] H. Y. Lee, K. Hong, J. W. Kim and S. Y. Lee, “Development of design parameters of brassiere. Part 1. 3D shape of the breast and underwire of the brassiere (Korea Society of Clothing & Textiles),” in Proceeding of Joint World Conference, Korea, pp. 90, 2001
[11] J. M. Yip, N. Mouratova, R. M. Jeffery, D. E. Veitch, R. J. Woodman and N. R. Dean, “Accurate assessment of breast volume: a study comparing the volumetric gold standard (direct water displacement measurement of mastectomy specimen) with a 3D laser scanning technique,” Annals of Plastic Surgery, vol. 68, no. 2, pp. 135-141, 2012.
[12] S. K. Luk, W. Yu, L. L. Liu and M. Y. Suh, Exchangeable cup bridge connection system. Beijing: State Intellectual Property office of P.R.C, 2015.
[13] J. Zhou, W. Yu and S. -P. Ng, “Studies of three-dimensional trajectories of breast movement for better bra design,” Textile Research Journal, vol. 82, no. 3, pp. 242-254, 2012.
[14] J. L. White, J. C. Scurr and N. A. Smith, “The effect of breast support on kinetics during overground running performance,” Ergonomics, vol. 52, no. 4 pp. 492-498, 2009.
[15] S. Haake and J. Scurr, “A method to estimate strain in the breast during exercise,” Sports Engineering, vol. 14, no. 1, pp. 49-56, 2011.
[16] C. Starry, D. Branson, R. Shehab, C, Farr, S. Ownbey and J. Swinney, “Biomechanical analysis of a prototype sports bra,” Journal of Textile and Apparel, Technology and management, vol. 4, no. 3, pp. 1-14, 2005.
[17] K. Shin,, “Patternmaking for the underwired bra: New directions,” Journal of the Textile Institute, vol. 98, no. 4, pp. 301-318, 2007.
[18] J. Kim, S. Lee, and K. Hong, “Development of sensible brassiere for middle aged women”. The Journal of Korean Society of Clothing and Textiles, vol. 24, no. 5, pp. 714-723, 2000.