Effects of sports bra and footwear on vertebral posture during walking and running

JOURNAL OF BIOMECHANICS

卷:99

Article

Leme, Juliane Cristina¹  dos Reis, Yasmim Barbosa¹  Banks, Luiza dos Santos¹  Cardoso, Jefferson Rosa²  Campos, Mario Hebling³  Moura, Felipe Arruda¹ 

[1] Univ Estadual Londrina, Sport Sci Dept, Lab Appl Biomech, Campus Univ,Rodovia Celso Garcia Cid Km 380, BR-86057970 Londrina, Parana, Brazil

[2] Univ Estadual Londrina, PAIFIT Res Grp, Lab Biomech & Clin Epidemiol, Londrina, Parana, Brazil

[3] Univ Fed Goias, Fac Phys Educ & Dance, Human Movement Assessment Lab, Goiania, Go, Brazil

关键词: Kinematics;    Spine;    Exercise;    Breast;    Sportswear;   

DOI  :  10.1016/j.jbiomech.2019.109524

来源: Elsevier

【 摘 要 】

Little attention has been given to factors which affects women running, such as proper footwear and breast support and their effects on spine. The objective of study was to analyse the influence of different breast support and footwear on vertebral posture during walking and running. Seventeen women ((x) over bar = 23.51; SD = 3.70 years) performed a treadmill walking (5 km/h) and running (7 and 10 km/h) with different footwear (barefoot, minimalist and traditional) and breast support (bare breast, everyday bra and sports bra) conditions. Spine movements were analyzed using three cameras in grayscale video mode, positioned behind the participant to register reflective markers fixed in the vertebrae. From the 3D coordinates of the trunk markers we computed, for the whole gait cycle (C) and for the average gait posture (neutral curve-NC) the maximal (M) thoracic (T) kyphosis and lateral flexion, and the maximal lumbar (L) lordosis and lateral flexion. Frontal plane: bare breast presented higher lumbar NC than the everyday bra and sports bra, higher MLC than the sports bra and lower MTC than the everyday bra and sports bra. Barefoot presented higher MTC than minimalist. Sagittal plane: bare breast presented lower MTC than the sports bra. Barefoot presented higher lumbar NC than the minimalist and traditional footwear and higher MLC than the minimalist and traditional ones. The sports bra increased curvatures in the thoracic spine that were rectified during bare breast conditions. In addition, both footwears were able to maintain the natural curvatures of the spine in the lumbar. (C) 2019 Elsevier Ltd. All rights reserved.

【 授权许可】

Free