Sports bra is a bra that provides firm support for the breasts. brassiere ( Brit /'bɹæzɪə(ɹ/ US /bɹə'ziɹ/ commonly referred to as a bra, /bɹɑ/ is an article of clothing that covers supports and elevates The breast is the upper Ventral region of an animal’s Torso, particularly that of Mammals including Human beings. It is intended for wear during vigorous exercise that might cause the breasts to move uncomfortably, preventing discomfort and embarrassment during exercise. Embarrassment is an Emotional state experienced upon having a socially or professionally unacceptable act or condition witnessed by or revealed to others Sports bras are sturdier than regular bras and offer greater support for the chest, thus increasing comfort and reducing the chance of damage to the ligaments of the chest during high-impact exercises, such as jogging. In Anatomy, the term ligament is used to denote three different types of structures Fibrous tissue that connects Bones to other bones
Design
A sports bra is basically a tank top with the bottom half cut off. The first sports bra dates from 1977. Also 1977 (album by Ash. Year 1977 ( MCMLXXVII) was a Common year starting on Saturday (link displays Hinda Miller and Lisa Landahl cut up a pair of jockstraps and sewed them together into a bra; it was marketed as the Jogbra. Hinda Miller (born April 18, 1950, Montreal Quebec, Canada) is currently a Democratic member of the Vermont State Senate [1] Other designs use gel and water pads, silver fibres, and air bags. A stitchless bra was made by Wacoal, molded, compressed, and shaped. is a worldwide Lingerie manufacturer and marketer headquartered in Kyoto, Japan. Other bras are knitted in circular patterns, giving varying stretch and support. [2] A common basis is a stretchable, absorbent fabric such as Lycra, and may be designed to draw perspiration away from the skin to reduce irritation. Spandex or elastane is a Synthetic fiber known for its exceptional elasticity. Sports bras can be classified into either encapsulation brassieres (with molded cups), or compression brassieres that restrict movement by flattening the breasts. Encapsulation is generally better for reducing discomfort; some women prefer compression designs for modesty.
A number of women, particularly those with large breasts, find sports bras helpful for easing pain and discomfort or if embarrassment prevents them from participating. Some sports bras are meant to be worn as outerwear, such as for jogging. Most bra research has concentrated on sports bras, where discomfort is directly related to the degree of nipple movement. While sports bras are more effective in this regard than standard bras, they also vary considerably in their effectiveness.
Exercise discomfort
About 50 percent of women report some pain or discomfort in their breasts during exercise. This varies considerably in intensity and may depend on what they are wearing. In an Australian study 3 women (17-21, cup sizes B and C) were photographed exercising bare breasted, with two models of a bra, and with a particular sports bra. As expected, breast motion was reduced by bras, and the sports bra was the most effective. The women reported less discomfort with bras and especially with the sports bra. However not all sports bras are created equal and should be properly fitted. [3] A 2007 British study found that breasts move in three planes of motion during exercise. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. This study concluded that encapsulation bras are more effective than compression bras at reducing total breast motion during exercise because encapsulation bras reduce motion in two of the three planes, while compression bras reduce motion in only one plane[4]
Although some women athletes are concerned that a sports bra may interfere with breathing, and increased pressure on the rib cage has been demonstrated, no significant effect on breathing can be shown. [5]
References
- ^ Miller, Hinda. Jogbra and Beyond. Ms. Money. Retrieved on 2007-10-26. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Events 740 - An Earthquake strikes Constantinople, causing much damage and death
- ^ Casselman, Anne (November 2005). "The Physics of Bras". Discover 26 (11). Discover is a Science magazine that publishes articles about Science for a general audience
- ^ Mason, BR; Page, KA; Fallon, K (June 1999). "An analysis of movement and discomfort of the female breast during exercise and the effects of breast support in three cases". J Sci Med Sport 2 (2): 134–44. doi:. A digital object identifier ( DOI) is a permanent identifier given to an Electronic document. PMID 10476977.
- ^ University of Portsmouth (2007, September 23). Bouncing Breasts Spark New Bra Challenge.
- ^ Bowles, KA; Steele, JR; Chaunchaiyakul, R (Sep 2005). "Do current sports brassiere designs impede respiratory function?". Med Sci Sports Exerc. 37 (9): 1633–40. doi:. A digital object identifier ( DOI) is a permanent identifier given to an Electronic document. PMID 16177619.
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