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Related Experiment Videos

Nutritionally-induced changes in parasympathetic function.

J Hirsch1, R Mackintosh, R L Leibel

  • 1Rockefeller University, Laboratory of Human Behavior and Metabolism, New York, NY 10021-6399.

Brain Research Bulletin
|September 1, 1991
PubMed
Summary
This summary is machine-generated.

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Changes in body weight significantly impact the parasympathetic nervous system

Area of Science:

  • Cardiology
  • Autonomic Neuroscience

Background:

  • Heart rate variability (HRV) reflects autonomic nervous system (ANS) input to the heart.
  • Previous research indicates body weight fluctuations alter autonomic function, affecting HRV.

Purpose of the Study:

  • To quantify parasympathetic nervous system influence on HRV.
  • To investigate the relationship between body weight changes and autonomic function.

Main Methods:

  • Noninvasive, computerized electrocardiography for spectral analysis of HRV.
  • Pharmacologic dissection to differentiate autonomic inputs to HRV.

Main Results:

  • Increased body weight leads to a significant decline in parasympathetic function.
  • Decreased body weight results in increased parasympathetic activity.

Related Experiment Videos

  • Sympathetic nervous system changes associated with weight alteration are minimal.

    • Conclusions:

    • Body weight is a critical determinant of parasympathetic nervous system modulation of heart rate.
    • HRV analysis, particularly with pharmacologic methods, offers a precise way to assess autonomic function in response to weight changes.