Nakamura Kenji, Fujiwara Takeshi, Hoshide Satoshi, Ishiyama Yusuke, Taki Mizuri, Ozawa Seiji, Kario Kazuomi
Department of Healthcare Informatics, Faculty of Health and Welfare, Takasaki University of Health and Welfare, Takasaki, Japan.
Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University School of Medicine, Shimotsuke, Japan.
J Clin Hypertens (Greenwich). 2021 Apr;23(4):843-848. doi: 10.1111/jch.14177. Epub 2021 Jan 17.
There are no studies assessing short-term blood pressure (BP) changes induced by daily exercise load in young trained individuals. The authors enrolled 25 healthy, trained (mean age 19.7 ± 0.1 years, 36% female) and 26 healthy, untrained (mean age 20.4 ± 0.3 years, 50% female) individuals and measured BP after the Master two-step test. Among them, 42 individuals underwent echocardiography after BP measurements to assess left ventricular mass index (LVMI). The baseline systolic BP (SBP) levels of trained and untrained individuals were 122.7 ± 2.9 versus 117.4 ± 1.5 mmHg, respectively (p = .016). Trained individuals showed a significant suppression of the SBP increase soon after exercise loads and lower SBP levels at 1, 2, and 3 min after exercise loads compared with untrained individuals. The peak SBP level over the study period was also significantly lower in trained individuals than in untrained individuals: 156.4 ± 3.3 versus 183.7 ± 5.2 mmHg (p < .001). Trained individuals showed significantly higher LVMI compared with untrained individuals: 129.4 versus 101.6 g/m (p < .001). These findings demonstrated that trained individuals showed significant suppression of short-term BP variability in response to by daily exercise loads and prompt SBP recovery from acute exercise loads compared with untrained individuals. Our results would be useful to understand short-term BPV and LV hypertrophy induced by adaptive responses of the heart to regular exercise loads.
尚无研究评估日常运动负荷对年轻训练有素个体短期血压（BP）的影响。作者招募了25名健康、训练有素（平均年龄19.7±0.1岁，女性占36%）和26名健康、未受过训练（平均年龄20.4±0.3岁，女性占50%）的个体，并在进行Master两步试验后测量血压。其中，42名个体在测量血压后接受了超声心动图检查，以评估左心室质量指数（LVMI）。训练有素和未受过训练个体的基线收缩压（SBP）水平分别为122.7±2.9与117.4±1.5 mmHg（p = 0.016）。与未受过训练的个体相比，训练有素的个体在运动负荷后不久SBP升高受到显著抑制，且在运动负荷后1、2和3分钟时SBP水平更低。在研究期间，训练有素的个体的SBP峰值水平也显著低于未受过训练的个体：156.4±3.3与183.7±5.2 mmHg（p < 0.001）。与未受过训练的个体相比，训练有素的个体的LVMI显著更高：129.4与101.6 g/m²（p < 0.001）。这些发现表明，与未受过训练的个体相比，训练有素的个体在日常运动负荷下对短期血压变异性有显著抑制作用，且急性运动负荷后SBP能迅速恢复。我们的结果将有助于理解心脏对规律运动负荷的适应性反应所诱导的短期血压变异性和左心室肥厚。
