Carter R, Watenpaugh D E, Smith M L
Department of Integrative Physiology, University of North Texas Health Science Center, 3500 Camp Bowie Blvd., Fort Worth, TX 76107, USA.
J Appl Physiol (1985). 2001 Oct;91(4):1902-7. doi: 10.1152/jappl.2001.91.4.1902.
Are women more susceptible to acute postexercise orthostatic hypotension compared with men? We hypothesized that decreases in arterial pressure during recovery from dynamic exercise are greater in women compared with men. We studied 8 men and 11 women during inactive and active recovery from cycling exercise. Heart rate, stroke volume (SV), cardiac output, mean arterial pressure (MAP), and total peripheral resistance (TPR) were measured during and after 3 min of exercise at 60% of calculated maximum heart rate. At 1 min after exercise, MAP decreased less (P < 0.05) during inactive recovery in men (-18 +/- 2 mmHg) compared with women (-30 +/- 2 mmHg). This difference was due to greater decreases in SV and less increase in TPR during inactive recovery from exercise in women compared with men. These differences persisted for 5 min after exercise. MAP decreased less during active recovery in men compared with women. These findings suggest that women may have increased risk of postexercise orthostatic hypotension and that active recovery from exercise may reduce this risk.
与男性相比，女性是否更容易患运动后急性体位性低血压？我们假设，与男性相比，女性在动态运动恢复过程中动脉压的下降幅度更大。我们研究了8名男性和11名女性在骑自行车运动后静止和主动恢复期间的情况。在以计算出的最大心率的60%进行3分钟运动期间及运动后，测量心率、每搏输出量（SV）、心输出量、平均动脉压（MAP）和总外周阻力（TPR）。运动后1分钟，男性在静止恢复期间MAP的下降幅度（-18±2 mmHg）小于女性（-30±2 mmHg）（P<0.05）。这种差异是由于与男性相比，女性在运动后静止恢复期间SV的下降幅度更大，TPR的增加幅度更小。这些差异在运动后持续了5分钟。男性在主动恢复期间MAP的下降幅度小于女性。这些发现表明，女性运动后体位性低血压的风险可能增加，运动后的主动恢复可能会降低这种风险。
