直立性训练时,尽管外周阻力增加,但主动脉波反射增强指数(augmentation index,AIx)降低,可能是静脉淤积导致的。该研究旨在检验直立性训练中AIx的降低是单纯由静脉淤积引起还是由于体位变换引起的。方法:年轻健康的参与者23(女性11/男性12)人,在3种不同的条件下进行直立性训练(5min/次):60°直立倾斜,60°直立倾斜加小腿双侧袖带节律充气加压(75mm Hg,1mm Hg=0.133kPa)以减低静脉淤积到最小程度,和施加独立于体位,造成静脉淤积的下肢负压(lower body negative pressure,LBNP;-30mm Hg)。在每次训练时,使用高精密度压力测 In upright training, although augmentation of peripheral resistance, the augmentation index (AIx) of the aortic wave decreases, possibly due to venous stasis. The aim of this study was to examine whether AIx reduction during upright training is caused solely by venous stasis or body position changes. METHODS: Young and healthy participants 23 (11 women / 12 men) were trained in 3 different conditions of orthosis (5 min / time): 60 ° upright tilt, 60 ° upright tilt plus bilateral cuff rhythm Inflation pressurization (75 mm Hg, 1 mm Hg = 0.133 kPa) to reduce venous accumulation to a minimum, and lower body negative pressure (LBNP; -30 mm Hg) independent of body position resulting in venous accretion. At each training, use high-precision pressure gauge