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Related Concept Videos

Factors Influencing Heart Rate01:30

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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Regulation of Heart Rates01:31

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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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Cardiac Output I:Effect of Heart Rate on Cardiac Output01:19

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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...
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Exercise and Cardiac Output01:17

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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.
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Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

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Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per...
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Cardiac Output and Stroke Volume01:11

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Cardiac output (CO) is an integral aspect of human physiology, reflecting the heart's efficiency and responsiveness to the body's needs. It represents the volume of blood that the left or right ventricle ejects into the aorta or pulmonary trunk each minute. The CO is calculated by multiplying the heart rate (HR)—the number of heartbeats per minute—by the stroke volume (SV)—the amount of blood pumped out with each heartbeat.
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Updated: Apr 27, 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 and swimming.

Julian Koenig1, Marc N Jarczok, Mieke Wasner

  • 1Department of Psychology, The Ohio State University, Columbus, OH, USA, koenig.393@osu.edu.

Sports Medicine (Auckland, N.Z.)
|June 25, 2014
PubMed
Summary
This summary is machine-generated.

Heart rate variability (HRV) is a valuable tool for assessing autonomic nervous system activity in swimmers. This review synthesizes current research on HRV in swimming, highlighting its potential for optimizing training and performance.

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Area of Science:

  • Sports Science and Physiology
  • Autonomic Nervous System Research
  • Swimming Performance Analysis

Background:

  • Swimming professionals seek research methods to enhance athletic performance.
  • Heart rate variability (HRV) is increasingly used to assess autonomic nervous system activity in sports.
  • Research applying HRV specifically to swimming is limited.

Purpose of the Study:

  • To systematically review existing literature on the application of HRV in swimming research.
  • To identify implications for future research directions in swimming and HRV.

Main Methods:

  • A systematic literature search was conducted across PubMed, PSYNDEX, and Embase databases.
  • Studies were included if they involved empirical HRV investigations in non-clinical human subjects related to swimming, were peer-reviewed, and in English.
  • PRISMA statement guidelines were followed for study selection.

Main Results:

  • Out of 194 initial studies, 14 met the inclusion criteria.
  • Included studies utilized control group designs (between-subject differences), repeated measures designs (within-subject differences in interventions), or explored HRV agreement with other measures.
  • The reviewed studies demonstrate the feasibility and potential of HRV in swimming research.

Conclusions:

  • The existing literature supports the use of HRV in swimming research.
  • Future research should focus on translational approaches to integrate HRV findings into practical athlete training.
  • Further studies are needed to bridge the gap between current evidence and real-world application in swimming.