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Related Concept Videos

Factors Influencing Heart Rate01:30

Factors Influencing Heart Rate

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.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Cardiac Output I:Effect of Heart Rate on Cardiac Output01:19

Cardiac Output I:Effect of Heart Rate on Cardiac Output

Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart rate...
Exercise and Cardiac Output01:17

Exercise and Cardiac Output

Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
Sustained exercise increases the muscles' oxygen demand, which can be met...
Regulation of Heart Rates01:31

Regulation of Heart Rates

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).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
Exercise and Cardiovascular Response01:20

Exercise and Cardiovascular Response

Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Pathophysiology of Cardiac Performance01:29

Pathophysiology of Cardiac Performance

Typical heart performance is influenced by heart rate, rhythm, myocardial contraction, and metabolism or blood flow. The cardiac muscle exhibits distinct electrophysiological features, including pacemaker activity and calcium channel control, which play a vital role in the heart's response to various drugs. The autonomic nervous system, comprising the sympathetic and parasympathetic branches, regulates heart rate. Sympathetic activation increases heart rate, while parasympathetic activation...

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Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
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Heart rate variability and cognitive function: effects of physical effort.

Caroline Di Bernardi Luft1, Emílio Takase, David Darby

  • 1Psychology Post-Graduation Program, Federal University of Santa Catarina, Laboratory of Sports and Exercise Neuroscience, Heitor Luz, n.225, ap.208, 88015-500 Florianopolis, Santa Catarina, Brazil. caroluft21@yahoo.com.br

Biological Psychology
|July 28, 2009
PubMed
Summary

Heart rate variability (HRV) changes with cognitive demand and physical exertion in athletes. Physical exercise strengthens the link between HRV and cognitive performance, suggesting psychophysiological implications.

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Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
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Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology

Published on: September 21, 2018

Area of Science:

  • Sports Science
  • Neuroscience
  • Physiology

Background:

  • Heart rate variability (HRV) reflects autonomic nervous system activity.
  • Cognitive performance can be influenced by physiological states, including physical exertion.
  • Understanding the interplay between HRV, cognition, and exercise is crucial for athletes.

Purpose of the Study:

  • To investigate changes in HRV and cognitive function before and after physical effort in elite track and field athletes.
  • To examine the relationship between different cognitive tasks and HRV metrics.
  • To determine how physical exertion modulates the association between HRV and cognitive performance.

Main Methods:

  • Assessed interbeat intervals to calculate time and frequency domain HRV measures.
  • Utilized a CogState cognitive battery assessing reaction time, working memory, and attention.
  • Compared HRV and cognitive performance at baseline, during tasks, and post-physical effort.

Main Results:

  • Significant differences in HRV were observed between executive and non-executive cognitive tasks.
  • Physical effort led to a notable increase in sympathetic modulation indices.
  • Correlations between HRV and cognitive performance (speed/accuracy) were identified, particularly post-exercise.

Conclusions:

  • HRV is demonstrably linked to cognitive demand.
  • The correlation between HRV and cognitive performance is enhanced following physical exercise.
  • Findings necessitate further research into the psychophysiological interpretation of HRV signals in relation to cognition.