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<p>The effects of an eight-month marathon school training program on blood pressure (BP) and underlying hemodynamics were examined in 45 participants and 43 controls. Hemodynamics were recorded using whole-body impedance cardiography, radial tonometric pulse wave analysis, and third-finger BP measurements during passive head-up tilt. The mean ages were 40.9 and 42.2 years, and body mass indexes (BMI) 25.1 and 25.8&#xa0;kg/m<sup>2</sup>, respectively. Marathon training decreased mean weight (˗1.6&#xa0;kg), fat percentage (˗2.7%), and BMI (˗0.5&#xa0;kg/m<sup>2</sup>) and increased maximal oxygen uptake (+3.2&#xa0;ml/kg/min) and insulin sensitivity (+0.013 units) (<i>p</i> &lt; 0.03 for all). During head-up tilt, systolic BP and cardiac output decreased, while diastolic BP, heart rate, and systemic vascular resistance (SVR) increased, but training did not affect these posture-induced changes. Initial aortic and third finger systolic/diastolic BP were numerically but not significantly lower in the marathon vs. control group (by 3.4/2.3 and 5.5/4.5 mmHg, respectively, <i>p</i> &gt; 0.075). Final BP values were significantly lower in the marathon group (by 7.2/4.5 and 10.9/10.2 mmHg, respectively, <i>p</i> &lt; 0.01). Marathon training reduced SVR by 167 dyn×s/cm<sup>5</sup>×m<sup>2</sup>(<i>p</i> = 0.041), and extracellular water volume by 0.34&#xa0;L (<i>p</i> = 0.045). To conclude, aerobic exercise training appears to lower BP, a significant cardiovascular risk factor, by reducing SVR and decreasing extracellular water volume.</p>

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Eight months of marathon school training reduced blood pressure, systemic vascular resistance and extracellular water volume

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月21日

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  • Marjatta Pekola-Kiviniemi,
  • Antti J. Tikkakoski,
  • Jenni K. Koskela,
  • Anna Tahvanainen,
  • Satu Mäkelä,
  • Matti Jääskeläinen,
  • Jukka Mustonen,
  • Ilkka H. Pörsti

摘要

The effects of an eight-month marathon school training program on blood pressure (BP) and underlying hemodynamics were examined in 45 participants and 43 controls. Hemodynamics were recorded using whole-body impedance cardiography, radial tonometric pulse wave analysis, and third-finger BP measurements during passive head-up tilt. The mean ages were 40.9 and 42.2 years, and body mass indexes (BMI) 25.1 and 25.8 kg/m2, respectively. Marathon training decreased mean weight (˗1.6 kg), fat percentage (˗2.7%), and BMI (˗0.5 kg/m2) and increased maximal oxygen uptake (+3.2 ml/kg/min) and insulin sensitivity (+0.013 units) (p < 0.03 for all). During head-up tilt, systolic BP and cardiac output decreased, while diastolic BP, heart rate, and systemic vascular resistance (SVR) increased, but training did not affect these posture-induced changes. Initial aortic and third finger systolic/diastolic BP were numerically but not significantly lower in the marathon vs. control group (by 3.4/2.3 and 5.5/4.5 mmHg, respectively, p > 0.075). Final BP values were significantly lower in the marathon group (by 7.2/4.5 and 10.9/10.2 mmHg, respectively, p < 0.01). Marathon training reduced SVR by 167 dyn×s/cm5×m2(p = 0.041), and extracellular water volume by 0.34 L (p = 0.045). To conclude, aerobic exercise training appears to lower BP, a significant cardiovascular risk factor, by reducing SVR and decreasing extracellular water volume.