Comparison of breast motion at different levels of support during physical activity

Authors

  • Lin-Hwa Wang National Cheng Kung University, Taiwan, Province of China http://orcid.org/0000-0001-6769-1377
  • Li-Chieh Kuo National Cheng Kung University, Taiwan, Province of China
  • Fong-Chin Su National Cheng Kung University, Taiwan, Province of China

DOI:

https://doi.org/10.14198/jhse.2017.124.12

Keywords:

Displacement, Everyday bra, Sports bra, Crop-Top bra

Abstract

Optical tracking systems have been used in previous studies to capture the motion of the nude breast and breasts in bras, under the assumption that no breast-bra relative movement occurred within the bra. This study compared breast and bra movement through electromagnetic tracking and optical tracking systems to determine the relative breast movement occurring with different breast support and exercise-induced breast discomfort. Total of 30 female participants (mean age: 21.5 ± 2.3 years; cup sizes: A-F) were recruited and their movement at four different levels of breast support was recorded in two motion capture systems for further analysis and comparison. Significant differences between bra and breast vertical displacement were found at all support levels during periods of intense movement (r = 0.556; p < 0.05). Because the greatest bra displacement was observed when participants wore an everyday bra and the greatest breast displacement was observed when participants wore a crop-top bra, there was evident inconsistency in bra and breast motion and a high-impact sports bra was the most effective to reduce breast movement and discomfort among the four types of bras. An electromagnetic tracking system provided direct observation of the actual movement of the breasts, and an optical tracking system enabled us to monitor bra displacement. Significant differences were observed in bra and breast displacement during the intense movements included in this study. The results bring into question the assumption made in previous studies that no relative movement occurs within a breast support garment.

Funding

Ministry of Science and Technology, TAIWAN

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References

Bland, M.J., & Altman, D. (1986). Statistical methods for assessing agreement between two methods of clinical measurement. Lancet, 327, 307-310. https://doi.org/10.1016/S0140-6736(86)90837-8

De Silva, M. (1986). The costoclavicular syndrome: a 'new cause'. Annals of the Rheumatic Diseases, 45(11), 916-920. https://doi.org/10.1136/ard.45.11.916

Greenbaum, A. R., Heslop, T., Morris, J., & Dunn, K. W. (2003). An investigation of the suitability of bra fit in women referred for reduction mammaplasty. British Journal of Plastic Surgery, 56(3), 230-236. https://doi.org/10.1016/S0007-1226(03)00122-X

Hadi, M. S. (2000). Sports Brassiere: Is It a Solution for Mastalgia? The Beast Journal, 6(6), 407-409. https://doi.org/10.1046/j.1524-4741.2000.20018.x

Kaye, B. L. (1972). Neurologic Changes with Excessively Large Breasts. Southern Medical Journal, 65(2), 177-180. https://doi.org/10.1097/00007611-197202000-00010

Haake, S., & Scurr, J. (2010). A dynamic model of the breast during exercise. Sports Engineering, 12(4), 189-197. https://doi.org/10.1007/s12283-010-0046-z

Hughes, J. F., Van Dam, A., McGuire, M., Sklar, D. F., Foley, J. D., Feiner, S. K., & Akeley, K. (2013). Computer graphics principles and practice (Third ed.): Addison-Wesley.

Lorentzen, D., & Lawson, L. (1987). Selected Sports Bras - a Biomechanical Analysis of Breast Motion While Jogging. Physician and Sportsmedicine, 15(5), 128-130,132-134,136,139. https://doi.org/10.1080/00913847.1987.11709355

Mason, B. R., Page, K. A., & Fallon, K. (1999). 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, 2(2), 134-144. https://doi.org/10.1016/S1440-2440(99)80193-5

McGhee, D. E., Steele, J. R., Zealey, W. J., & Takacs, G. J. (2013). Bra-breast forces generated in women with large breasts while standing and during treadmill running: Implications for sports bra design. Applied Ergonomics, 44(1), 112-118. https://doi.org/10.1016/j.apergo.2012.05.006

McGhee, D. E., & Steele, J. R. (2010). Breast Elevation and Compression Decrease Exercise-Induced Breast Discomfort. Medicine and Science in Sports and Exercise, 42(7), 1333-1338. https://doi.org/10.1249/MSS.0b013e3181ca7fd8

Ryan, E. L. (2000). Pectoral girdle myalgia in women: A 5-year study in a clinical setting. Clinical Journal of Pain, 16(4), 298-303. https://doi.org/10.1097/00002508-200012000-00004

Scurr, J. C., White, J. L., & Hedger, W. (2011). Supported and unsupported breast displacement in three dimensions across treadmill activity levels. Journal of Sports Sciences, 29(1), 55-61. https://doi.org/10.1080/02640414.2010.521944

Scurr, J. C., White, J. L., Milligan, A., Risius, D., & Hedger, W. (2011). Vertical Breast Extension During Treadmill Running. Paper presented at The 29th Conference of the International Society of Biomechanics in Sports, Porto, Portugal.

Scurr, J. C., White, J. L., & Hedger, W. (2010). The effect of breast support on the kinematics of the breast during the running gait cycle. Journal of Sports Sciences, 28(10), 1103-1109. https://doi.org/10.1080/02640414.2010.497542

Scurr, J. C., White, J. L., & Hedger, W. (2009). Breast displacement in three dimensions during the walking and running gait cycles. Journal of Applied Biomechanics, 25(4), 322-329. https://doi.org/10.1123/jab.25.4.322

Starr, C., Branson, D., Shehab, R., Farr, C., Ownbey, S., & Swinney, J. (2005). Biomechanical Analysis of A Prototype Sports Bra. Journal of Textile and Apparel, Technology and Management, 4(3), 14.

Turner, A. J., & Dujon, D. G. (2005). Predicting cup size after reduction ammaplasty. British Journal of Plastic Surgery, 58, 290- 298. https://doi.org/10.1016/j.bjps.2004.11.008

White, J. L. (2013). Breast support implications for female recreational athletes. (Ph.D.), the University of Portsmouth. Retrieved from http://eprints.port.ac.uk/13915/

White, J. L., Scurr, J. C., & Smith, N. A. (2009). The effect of breast support on kinetics during overground running performance. Ergonomics, 52(4), 492-498. https://doi.org/10.1080/00140130802707907

Wood, L. E., White, J., Milligan, A., Ayres, B., Hedger, W. and Scurr, J. (2012). Predictors of three-dimensional breast kinematics during bare-breasted running. Medicine and Science in Sports and Exercise, 44 (7), 1351-1357. https://doi.org/10.1249/MSS.0b013e31824bd62c

White, J. L., Scurr, J. C., & Hedger, W. (2011). A comparison of three-dimensional breast displacement and breast comfort during overground and treadmill running. Journal of Applied Biomechanics, 27(1), 47-53. https://doi.org/10.1123/jab.27.1.47

Wilson, M. C., & Sellwood, R. A. (1976). Therapeutic value of a supporting brassière in mastodynia. British Medical Journal, 2(6027), 90. https://doi.org/10.1136/bmj.2.6027.90

Zhou, J., & Yu, W. (2012). Three-dimensional Movements of Pert and Ptotic Breasts. Journal of Fiber Bioengineering and Informatics, 5(2), 139-150. https://doi.org/10.3993/jfbi06201203

Zhou, J., Yu, W., & Ng, S. P. (2012). Studies of three-dimensional trajectories of breast movement for better bra design. Textile Research Journal, 82(3), 242-254. https://doi.org/10.1177/0040517511435004

Statistics

Statistics RUA

Published

2017-12-19

How to Cite

Wang, L.-H., Kuo, L.-C., & Su, F.-C. (2017). Comparison of breast motion at different levels of support during physical activity. Journal of Human Sport and Exercise, 12(4), 1256–1264. https://doi.org/10.14198/jhse.2017.124.12

Issue

Section

Biomechanics