Mesquita Montes António, Gouveia Sara, Crasto Carlos, de Melo Cristina Argel, Carvalho Paulo, Santos Rita, Vilas-Boas João Paulo
Department of Physiotherapy, and Activity and Human Movement Study Center (CEMAH), School of Allied Health Technologies, Polytechnic Institute of Porto, Rua Valente Perfeito 322, 4400-330, Vila Nova de Gaia, Portugal; Faculty of Sport, CIFI2D, and Porto Biomechanics Laboratory (LABIOMEP), University of Porto, Rua Dr. Plácido Costa 91, 4200-450, Porto, Portugal.
Private Practice, Portugal.
J Bodyw Mov Ther. 2017 Apr;21(2):354-361. doi: 10.1016/j.jbmt.2016.09.004. Epub 2016 Sep 15.
This study aims to evaluate the effect of different postural sets on abdominal muscle activity during breathing in healthy subjects.
Twenty-nine higher education students (20.86 ± 1.48 years; 9 males) breathed at the same rhythm (inspiration: 2 s; expiration: 4 s) in supine, standing, tripod and 4-point-kneeling positions. Surface electromyography was performed to assess the activation intensity of rectus abdominis, external oblique and transversus abdominis/internal oblique muscles during inspiration and expiration.
During both breathing phases, the activation intensity of external oblique and transversus abdominis/internal oblique was significantly higher in standing when compared to supine (p ≤ 0.001). No significant differences were found between tripod position and 4-point-kneeling positions. Transversus abdominis/internal oblique activation intensity in these positions was higher than in supine and lower than in standing.
Postural load and gravitational stretch are factors that should be considered in relation to the specific recruitment of abdominal muscles for breathing mechanics.
本研究旨在评估健康受试者在呼吸过程中不同姿势对腹部肌肉活动的影响。
29名高等教育学生（年龄20.86±1.48岁；男性9名）在仰卧位、站立位、三角架位和四点跪位以相同节奏呼吸（吸气：2秒；呼气：4秒）。进行表面肌电图检查，以评估腹直肌、腹外斜肌和腹横肌/腹内斜肌在吸气和呼气过程中的激活强度。
在两个呼吸阶段，站立位时腹外斜肌和腹横肌/腹内斜肌的激活强度均显著高于仰卧位（p≤0.001）。三角架位和四点跪位之间未发现显著差异。这些姿势下腹横肌/腹内斜肌的激活强度高于仰卧位且低于站立位。
姿势负荷和重力拉伸是与呼吸力学中腹部肌肉的特定募集相关时应考虑的因素。
