School of Kinesiology and Health Sciences, York University, 355 Bethune College, 4700 Keele St, Toronto, ON, M3J 1P3, Canada.
Muscle Health Research Centre, York University, Toronto, ON, Canada.
Clin Auton Res. 2017 Dec;27(6):411-415. doi: 10.1007/s10286-017-0455-1. Epub 2017 Aug 1.
Deep breathing assesses autonomic function; however, many researchers/clinicians do not account for hyperventilation, brain blood flow or blood pressure.
Men and women (with/without oral contraceptives) participated. women participated during low and high hormone phases of the menstrual cycle. Blood pressure, end-tidal carbon dioxide, middle cerebral artery velocity and cerebrovascular resistance were assessed.
Deep breathing decreased end-tidal carbon dioxide and middle cerebral artery velocity while increasing cerebrovascular resistance in all participants; blood pressure decreased in men. There were no influences of menstrual cycle or oral contraceptives.
Men have different autonomic responses to deep breathing compared to women.
深呼吸评估自主神经功能；然而，许多研究人员/临床医生没有考虑到过度通气、脑血流或血压。
男性和女性（服用/未服用口服避孕药）参与了研究。女性在月经周期的低激素和高激素阶段参与了研究。评估了血压、呼气末二氧化碳、大脑中动脉速度和脑血管阻力。
深呼吸在所有参与者中降低了呼气末二氧化碳和大脑中动脉速度，同时增加了脑血管阻力；男性的血压下降。月经周期或口服避孕药没有影响。
与女性相比，男性对深呼吸有不同的自主神经反应。
