Department of Biomolecular and Sports Sciences, Coventry University, Coventry, United Kingdom.
J Strength Cond Res. 2014 Jun;28(6):1706-13. doi: 10.1519/JSC.0000000000000322.
The occurrence of postresistance exercise hypotension (PEH) after resistance exercise remains unknown. This study examined blood pressure and heart rate (HR) responses to an acute bout of low- and high-intensity resistance exercise, matched for total work, in trained males. Sixteen resistance-trained males (23.1 ± 5.9 years) performed an acute bout of low- (40% of 1 repetition maximum [1RM]) and high-intensity resistance exercise (80% 1RM), matched for total work, separated by 7 days and performed in a counterbalanced order. Systolic blood pressure (SBP) and diastolic blood pressure (DBP), mean arterial pressure (MAP), and HR were assessed before exercise, after completion of each exercise resistance exercise (3 sets of back squat, bench press, and deadlift) and every 10 minutes after resistance exercise for a period of 60 minutes. Results indicated a significant intensity × time interaction for SBP (p = 0.034, partial η(2) = 0.122) and MAP (p = 0.047, partial η(2) = 0.116) whereby SBP and MAP at 50-minute recovery and 60-minute recovery were significantly lower after high-intensity exercise (p = 0.01 for SBP and p = 0.05 for MAP in both cases) compared with low-intensity exercise. There were no significant main effects or interactions in regard to DBP (all p > 0.05). Heart rate data indicated a significant main effect for time (F(9, 135) = 2.479, p = 0.0001, partial η(2) = 0.344). Post hoc multiple comparisons indicated that HR was significantly higher after squat, bench press, and deadlift exercise compared with resting HR and HR at 40-, 50-, and 60-minute recovery (all p = 0.03). The present findings suggest that an acute bout of high intensity, but not low intensity, resistance exercise using compound movements can promote PEH in trained men.
抗阻运动后发生的运动后低血压（PEH）仍然未知。本研究检查了血压和心率（HR）对急性低强度和高强度抗阻运动的反应，这两种运动的总工作量相匹配，研究对象为训练有素的男性。16 名抗阻训练的男性（23.1±5.9 岁）进行了急性低强度（1RM 的 40%）和高强度（80%1RM）抗阻运动，总工作量相匹配，间隔 7 天，以平衡方式进行。在运动前、每次运动后（3 组深蹲、卧推和硬拉）以及运动后每 10 分钟测量收缩压（SBP）、舒张压（DBP）、平均动脉压（MAP）和 HR，持续 60 分钟。结果表明，SBP（p=0.034，部分η²=0.122）和 MAP（p=0.047，部分η²=0.116）的强度×时间交互作用显著，50 分钟和 60 分钟恢复期的 SBP 和 MAP 明显低于高强度运动（SBP 在两种情况下均为 p=0.01，MAP 为 p=0.05），与低强度运动相比。DBP 无显著的主效应或交互作用（p>0.05）。心率数据表明，时间的主效应显著（F(9, 135)=2.479，p=0.0001，部分η²=0.344）。事后多重比较表明，与静息心率和 40、50、60 分钟恢复期的心率相比，深蹲、卧推和硬拉运动后的 HR 显著升高（均为 p=0.03）。本研究结果表明，急性高强度、而非低强度、使用复合动作的抗阻运动可导致训练有素的男性发生 PEH。
