Wakefield-Scurr Joanna, Hamilton Caitlin, Reeves Katie, Jones Melissa, Jones Brogan
Research Group in Breast Health, School of Sport, Health and Exercise Science, University Portsmouth, Portsmouth, UK.
Sports Biomech. 2024 Nov;23(11):2420-2430. doi: 10.1080/14763141.2022.2046147. Epub 2022 Mar 1.
Sports bras provide support by restricting breast motion during exercise, which may prevent damage to breast structures. Laundering affects the mechanical properties of some sports bra materials. Bra function on the wearer after washing is unreported, meaning sports bra durability is unknown. This intervention study compared subjective and objective performance of sports bras that were washed, and worn/washed, to a control. Twenty-two females were assigned three identical sports bras; control, washed and worn/washed (washed after 60-min wear). Pre-intervention: breast position was recorded while standing and running in each bra. Comfort, fit and aesthetics were rated. Intervention: participants undertook their normal exercise in their worn/washed bra. Post-intervention: after 25 washes (n = 19), pre-intervention testing was repeated. Breast volume and control bra motion were consistent pre/post-intervention; however, post-intervention breast motion increased (20% mediolaterally, 16% superioinferiorly) in washed bras and (32% mediolaterally, 25% superioinferiorly) worn/washed bras. Post-intervention washed, and worn/washed bras were perceived as less supportive and washed bras less comfortable than worn/washed bras. Sports bra support reduced after 25 washes; this was compounded by wear. Participants detected reduced support, but comfort was sustained, suggesting replacement may not be considered. Guidelines on sports bra durability are recommended for breast health.
运动胸罩通过在运动期间限制乳房运动来提供支撑，这可能会防止对乳房结构造成损伤。洗涤会影响一些运动胸罩材料的机械性能。关于洗涤后胸罩对穿着者的功能尚未见报道，这意味着运动胸罩的耐用性未知。这项干预研究将洗涤过的、穿着/洗涤过的运动胸罩的主观和客观性能与对照组进行了比较。22名女性被分配了三件相同的运动胸罩：对照组、洗涤组和穿着/洗涤组（穿着60分钟后洗涤）。干预前：记录穿着每件胸罩站立和跑步时的乳房位置。对舒适度、贴合度和美观度进行评分。干预：参与者穿着/洗涤过的胸罩进行正常运动。干预后：在洗涤25次后（n = 19），重复干预前测试。干预前后乳房体积和对照胸罩的运动情况一致；然而，干预后，洗涤过的胸罩乳房运动增加（内外侧增加20%，上下方向增加16%），穿着/洗涤过的胸罩乳房运动增加（内外侧增加32%，上下方向增加25%）。干预后，洗涤过的和穿着/洗涤过的胸罩被认为支撑性较差，且洗涤过的胸罩比穿着/洗涤过的胸罩舒适度更低。运动胸罩洗涤25次后支撑性降低；穿着会加剧这种情况。参与者察觉到支撑性降低，但舒适度得以维持，这表明可能无需考虑更换。建议制定运动胸罩耐用性指南以维护乳房健康。
