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Related Concept Videos

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Factors Influencing Heart Rate

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The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
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The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
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Factors Influencing Attraction IV: Reciprocity01:28

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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
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Related Experiment Video

Updated: Feb 26, 2026

Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
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Heart rate variability reactivity and new romance: Cause or consequence?

Laura K Bailey1, Ron Davis1

  • 1Department of Psychology, Lakehead University, Canada.

Biological Psychology
|July 15, 2017
PubMed
Summary

Heart rate variability (HRV) reactivity, not its change, predicted relationship formation in women. Lower HRV reactivity was linked to finding a partner, especially for those with low BMI and high resting HRV.

Keywords:
Cardiac reactivityHeart rate variabilityInterpersonal relationshipsRelationship formation

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Area of Science:

  • Psychophysiology
  • Behavioral Endocrinology
  • Evolutionary Psychology

Background:

  • Physiological differences exist between single and coupled individuals during early romantic relationships.
  • Heart rate variability (HRV) reactivity has been interpreted as a stress-buffering effect of relationship formation.

Purpose of the Study:

  • To investigate whether HRV reactivity changes as a consequence of forming a romantic relationship.
  • To explore HRV reactivity as a potential predictor of relationship formation.

Main Methods:

  • Longitudinal study design.
  • Examined HRV reactivity in university women.
  • Analyzed the relationship between HRV reactivity, BMI, and resting HRV in predicting relationship formation.

Main Results:

  • HRV reactivity did not change as a consequence of initiating a new romantic relationship.
  • Lower HRV reactivity predicted greater relationship formation.
  • This prediction was moderated by BMI and resting HRV, particularly in women with low BMI and high resting HRV.

Conclusions:

  • Autonomic functioning, specifically HRV reactivity, may predict the likelihood of forming romantic relationships.
  • Interactions between HRV reactivity, BMI, and resting HRV suggest potential differences in mating strategies and success rates.