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Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
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Related Experiment Video

Updated: May 6, 2026

Non-invasive Assessment of Microvascular and Endothelial Function
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Serial assessment of local peripheral vascular function after eccentric exercise.

Mitchel R Stacy1, Kallie J Bladon, Jennifer L Lawrence

  • 1Department of Internal Medicine, Yale University School of Medicine, PO Box 208017, New Haven, CT 06520, USA.

Applied Physiology, Nutrition, and Metabolism = Physiologie Appliquee, Nutrition Et Metabolisme
|November 8, 2013
PubMed
Summary

Eccentric exercise causes muscle damage, impairing local vascular function and blood vessel dilation for up to 96 hours. This study reveals reduced endothelial and smooth muscle function following strenuous exercise.

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Area of Science:

  • Exercise Physiology
  • Vascular Biology
  • Skeletal Muscle Physiology

Background:

  • Muscle damage from eccentric exercise is common but its vascular effects are unclear.
  • Understanding local vascular responses post-exercise is crucial for recovery and performance.

Purpose of the Study:

  • To investigate serial local vascular responses after eccentric exercise-induced muscle damage.
  • To assess changes in endothelial-dependent and independent vasodilation and blood flow.

Main Methods:

  • Ten healthy males performed eccentric arm contractions to induce muscle damage.
  • Vascular responses (flow-mediated and nitroglycerin dilation) and blood flow were measured serially up to 96 hours post-exercise using Doppler ultrasound.
  • Maximal isometric strength was assessed to confirm muscle damage.

Main Results:

  • Eccentric exercise significantly reduced maximal isometric strength for 96 hours.
  • Both flow-mediated dilation and nitroglycerin responses were impaired 1 hour post-exercise and remained reduced for 96 hours.
  • Shear stress response was attenuated for 48 hours, while resting blood pressure and muscle blood flow were unchanged.

Conclusions:

  • Muscle damage from eccentric exercise impairs local endothelial and vascular smooth muscle function.
  • Reduced shear stress may contribute to impaired flow-mediated dilation, but the cause of reduced endothelial-independent vasodilation is unclear.