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The exercise pressor reflex.

Marc P Kaufman1, Shawn G Hayes

  • 1Division of Cardiovascular Medicine Departments of Internal Medicine and Human Physiology University of California, Davis, CA, USA. mpkaufman@ucdavis.edu

Clinical Autonomic Research : Official Journal of the Clinical Autonomic Research Society
|February 25, 2003
PubMed
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The exercise pressor reflex, activated by muscle afferents, drives cardiovascular and ventilatory responses during exercise. This review examines the stimuli and nerve pathways involved in this crucial physiological response.

Area of Science:

  • Physiology
  • Exercise Science
  • Cardiovascular Regulation

Background:

  • The exercise pressor reflex is a key mechanism influencing physiological adaptations to physical activity.
  • It is understood to mediate cardiovascular and ventilatory adjustments during exertion.

Purpose of the Study:

  • To review the evidence for the exercise pressor reflex's activity in humans and animals.
  • To elucidate the mechanical and metabolic stimuli that trigger this reflex.
  • To examine the role of specific sensory nerve fibers in reflex activation.

Main Methods:

  • Literature review of existing studies on the exercise pressor reflex.
  • Analysis of research on muscle afferent nerve activity (group III and IV).
  • Discussion of experimental findings on reflex control during exercise.

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Main Results:

  • Evidence supports the presence and activity of the exercise pressor reflex in both humans and animals.
  • Mechanical and metabolic stimuli from exercising muscles are identified as key triggers.
  • Group III and IV muscle afferents are crucial sensory pathways for evoking the reflex.

Conclusions:

  • The exercise pressor reflex is a significant physiological response to exercise.
  • Understanding its stimuli and neural pathways is vital for comprehending exercise physiology.
  • Ongoing research continues to refine our knowledge of this reflex and its associated controversies.