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Related Experiment Video

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Heart Rate Variability and Erectile Function in Younger Men: A Pilot Study.

Rui Miguel Costa1, Paula Mangia2, José Pestana3

  • 1William James Center for Research, ISPA - Instituto Universitário, Rua do Jardim do Tabaco 34, 1149-041, Lisbon, Portugal. rcosta@ispa.pt.

Applied Psychophysiology and Biofeedback
|January 2, 2021
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Summary

Erectile dysfunction (ED) in younger men is linked to lower heart rate variability (HRV). Specifically, lower low-frequency power and standard deviation of heart rate were associated with ED in this age group.

Keywords:
Erectile dysfunctionHeart rate variabilityStandard deviation of the heart rateYounger men

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Area of Science:

  • Cardiology
  • Urology
  • Autonomic Nervous System Research

Background:

  • Erectile dysfunction (ED) is an increasing concern in younger men.
  • Previous research linked ED in older men to lower heart rate variability (HRV), but data on younger men is scarce.

Purpose of the Study:

  • To investigate the association between ED and resting HRV parameters in men aged 18-39.
  • To identify specific HRV indicators related to ED in a nonclinical population of young men.

Main Methods:

  • A nonclinical sample of 105 men (18-39 years) was assessed.
  • ED was defined as an International Index of Erectile Function (IIEF-5) score below 22.
  • Welch's tests were used to analyze associations between ED and HRV parameters (LF, HF, SDNN, SDNN index).

Main Results:

  • 17.1% of participants reported ED (mild to moderate).
  • ED was associated with lower low-frequency power (LF), lower high-frequency power (HF), and lower standard deviation of heart rate.
  • After outlier removal, ED remained associated with lower LF and lower standard deviation of heart rate, but not HF.

Conclusions:

  • In younger men, ED may be associated with reduced sympathetic and parasympathetic cardiac tone.
  • Higher low-frequency power and greater standard deviation of heart rate may facilitate erections in younger men.
  • The standard deviation of heart rate, influenced by both autonomic branches, is a potentially important but overlooked HRV parameter in ED research.