Sex differences in autonomic function following maximal exercise.
Sex differences in autonomic function following maximal exercise.
复制标题
DOI：
10.1186/s13293-015-0046-6
复制
发表时间：
2015
影响因子：
7.9
通讯作者：
Fernhall B
中科院分区：
文献类型：
--
作者：
Kappus RM;Ranadive SM;Yan H;Lane-Cordova AD;Cook MD;Sun P;Harvey IS;Wilund KR;Woods JA;Fernhall B
心率变异性（HRV）、血压变异性（BPV）和心率恢复（HRR）是提供关于自主神经功能的见解的量度。最大运动量会影响自主神经功能，目前尚不清楚运动后自主神经恢复是否存在性别差异。因此，本研究的目的是确定性别差异的自主神经功能的几个措施和反应后，最大的运动。71名（31名男性和40名女性）年龄在18岁和35岁之间的健康、不吸烟、久坐血压正常的受试者在休息时和最大运动回合后进行了HRV和BPV的测量。在最大运动量后第1分钟和第2分钟测量HRR。男性在最大运动后第1分钟和第2分钟的HRR显著更大;然而，当控制VO 2峰值时，性别之间的显著性被消除。与女性相比，男性的静息BPV低频（LF）值显著较高，运动后无显著变化，而女性在急性最大运动后BPV-LF值显著增加。虽然男性和女性表现出显着降低，在这两个HRV LF和HRV高频（HF）与运动，女性有显着较高的HRV HF值运动后。男性有一个显着较高的HRV-LF/HF比值在休息;然而，男性和女性显着增加他们的HRV-LF/HF比值运动后。与年龄匹配的男性相比，绝经前女性表现出心脏保护性自主神经功能，这是由于最大运动后静息交感神经活动较低和迷走神经再激活较快。急性最大运动是一个足够的自主神经应激，以证明在关键的运动后恢复期的性别差异。
Heart rate variability (HRV), blood pressure variability, (BPV) and heart rate recovery (HRR) are measures that provide insight regarding autonomic function. Maximal exercise can affect autonomic function, and it is unknown if there are sex differences in autonomic recovery following exercise. Therefore, the purpose of this study was to determine sex differences in several measures of autonomic function and the response following maximal exercise. Seventy-one (31 males and 40 females) healthy, nonsmoking, sedentary normotensive subjects between the ages of 18 and 35 underwent measurements of HRV and BPV at rest and following a maximal exercise bout. HRR was measured at minute one and two following maximal exercise. Males have significantly greater HRR following maximal exercise at both minute one and two; however, the significance between sexes was eliminated when controlling for VO2 peak. Males had significantly higher resting BPV-low-frequency (LF) values compared to females and did not significantly change following exercise, whereas females had significantly increased BPV-LF values following acute maximal exercise. Although males and females exhibited a significant decrease in both HRV-LF and HRV-high frequency (HF) with exercise, females had significantly higher HRV-HF values following exercise. Males had a significantly higher HRV-LF/HF ratio at rest; however, both males and females significantly increased their HRV-LF/HF ratio following exercise. Pre-menopausal females exhibit a cardioprotective autonomic profile compared to age-matched males due to lower resting sympathetic activity and faster vagal reactivation following maximal exercise. Acute maximal exercise is a sufficient autonomic stressor to demonstrate sex differences in the critical post-exercise recovery period.