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Exercise and Cardiovascular Response01:20

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Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
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Preexercise intermittent passive stretching and vascular function after treadmill exercise.

Jacob T Caldwell1, Sarah A Fenn1, Lukas M Bekkedal1

  • 1Department of Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin, United States.

Journal of Applied Physiology (Bethesda, Md. : 1985)
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Summary

Pre-exercise passive stretching (PS) preserves vascular function after aerobic exercise. This simple intervention enhances vascular resilience, offering a novel method to support cardiovascular health before physical activity.

Keywords:
flow-mediated vasodilationpopliteal arterypostocclusive reactive hyperemiatreadmill

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Area of Science:

  • Exercise Physiology
  • Cardiovascular Physiology
  • Vascular Biology

Background:

  • Acute aerobic exercise can impair endothelial function, potentially increasing cardiovascular event risk.
  • Passive stretching (PS) improves vascular function, but its pre-exercise efficacy is unknown.
  • This strategy is relevant for individuals unable to perform dynamic exercise.

Purpose of the Study:

  • To investigate if pre-exercise passive stretching (PS) prevents declines in vascular function after treadmill exercise.
  • To test the hypothesis that pre-exercise PS enhances vascular resilience post-exercise.

Main Methods:

  • Healthy participants were randomized to a passive stretch (PS) or sham control group.
  • Intermittent calf PS involved a 5-min stretch/5-min relaxation cycle, repeated four times.
  • Vascular function was assessed before and after a 30-min treadmill run at 65% V̇o₂ peak.

Main Results:

  • Microvascular responsiveness was preserved in the PS group but significantly reduced in the sham group post-exercise.
  • Popliteal artery flow-mediated dilation (FMD) did not decline significantly in the PS group.
  • FMD significantly decreased in the sham control group after treadmill exercise.

Conclusions:

  • Pre-exercise passive stretching (PS) mitigates the decline in vascular function following acute aerobic exercise.
  • Intermittent PS before exercise enhances vascular resilience, suggesting a novel protective strategy.
  • This method is accessible and can be performed by most individuals to support vascular health.