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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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Decreased pulse rate01:14

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Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
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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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Depressive Disorders: MDD and Dysthymia01:27

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Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...
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Depressive Disorders: Etiology01:27

Depressive Disorders: Etiology

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Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
Biological Factors in Depression
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Depression: Overview01:18

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Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
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Related Experiment Video

Updated: Jun 18, 2025

Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
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HRV changes in young adults with depression.

Chandan Kumar1, Pooja Sakshi1, Niska Sinha2

  • 1Department of Physiology, Indira Gandhi Institute of Medical Sciences, Patna, Bihar, India.

Journal of Family Medicine and Primary Care
|July 29, 2024
PubMed
Summary
This summary is machine-generated.

Depression is linked to altered autonomic nervous system (ANS) activity, indicated by reduced heart rate variability (HRV) and an increased LF/HF ratio. These HRV changes suggest potential as a diagnostic biomarker for depression.

Keywords:
Autonomic nervous systemcardiovascular diseasedepressionheart rate variabilityyoung adults

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Area of Science:

  • Cardiology
  • Psychiatry
  • Neuroscience

Background:

  • Depression is a prevalent mental health disorder, particularly in young adults (18-25 years).
  • Autonomic nervous system (ANS) dysfunction is implicated in depression and may increase cardiovascular disease (CVD) risk.
  • Heart rate variability (HRV) assesses ANS function but findings in depression are inconsistent.

Purpose of the Study:

  • To investigate specific HRV changes associated with depression.
  • To explore the potential of HRV as a diagnostic tool for depression.

Main Methods:

  • Study included 42 newly diagnosed depressed patients (18-26 years) and 89 healthy controls.
  • Heart rate variability (HRV) was recorded using 5-minute stationary RR intervals.
  • HRV analysis included Time-Domain, Frequency-Domain, and Non-Linear parameters.

Main Results:

  • Depressed patients showed significantly reduced HRV parameters (SDRR, RMSSD, Total Power, SD1, SD2) (P < 0.0001).
  • The LF/HF ratio was significantly elevated in depressed patients (P < 0.05).

Conclusions:

  • Depression is associated with significant alterations in ANS activity.
  • These HRV changes may contribute to increased cardiovascular risk in depressed individuals.
  • HRV shows promise as a potential biomarker for diagnosing depression.