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Does deep water running reduce exercise-induced breast discomfort?

Deirdre E McGhee1, Bruce M Power, Julie R Steele

  • 1Biomechanics Research Laboratory, Faculty of Health and Behavioural Sciences, University of Wollongong, Northfields Avenue, Wollongong, New South Wales 2522, Australia. dmcghee@uow.edu.au

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Deep water running significantly reduced breast discomfort for women with large breasts compared to treadmill running. This increased comfort was linked to slower vertical breast velocity, not less displacement.

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Area of Science:

  • Biomechanics
  • Exercise Physiology

Background:

  • Women with large breasts often experience breast discomfort and pain during physical activity due to excessive breast motion.
  • Treadmill running can exacerbate exercise-induced breast discomfort.

Purpose of the Study:

  • To compare exercise-induced vertical breast displacement and discomfort between deep water running and treadmill running in women with large breasts.

Main Methods:

  • Sixteen women with large breasts (C+ bra cup) performed self-selected stride rate running on a treadmill and in deep water.
  • Vertical breast motion, displacement, and velocity were measured.
  • Breast discomfort, pain, and perceived exertion were self-reported post-exercise.

Main Results:

  • Deep water running resulted in significantly less breast discomfort and higher perceived exertion compared to treadmill running.
  • No significant difference in vertical breast displacement was observed between conditions.
  • Mean peak vertical breast velocity was significantly lower during deep water running than treadmill running.

Conclusions:

  • Deep water running offers a more comfortable exercise option for women with large breasts.
  • Reduced vertical breast velocity, not displacement, is the primary factor contributing to increased comfort during deep water running.