Related Experiment Video

Updated: Aug 7, 2026

Isolation of Human Ventricular Cardiomyocytes from Vibratome-Cut Myocardial Slices
11:19

Isolation of Human Ventricular Cardiomyocytes from Vibratome-Cut Myocardial Slices

Published on: May 10, 2020

Oral magnesium therapy, exercise heart rate, exercise tolerance, and myocardial function in coronary artery disease

R Pokan1, P Hofmann, S P von Duvillard

  • 1Department of Sport and Exercise Physiology, University of Vienna, Vienna, Austria.

British Journal of Sports Medicine
|July 11, 2006
PubMed

Insights

Oral magnesium therapy improved exercise tolerance and left ventricular function in patients with coronary artery disease (CAD). This study highlights magnesium

Area of Science:

  • Cardiology
  • Cardiovascular Research
  • Nutritional Science

Background:

  • Coronary artery disease (CAD) patients exhibit abnormal heart rate (HR) performance curves linked to reduced left ventricular function under stress.
  • Magnesium supplementation is known to enhance endothelial function, exercise capacity, and reduce chest pain in CAD patients.

Purpose of the Study:

  • To investigate the impact of oral magnesium therapy on exercise-induced heart rate response.
  • To evaluate the effects of magnesium on exercise tolerance and resting myocardial function in stable CAD patients.

Main Methods:

  • A 6-month double-blind, placebo-controlled trial involving 53 male patients with stable CAD.
  • Participants received either oral magnesium (15 mmol twice daily) or a placebo.
  • Key outcome measures included maximal oxygen uptake (VO2max), heart rate performance curve factor (k), and left ventricular ejection fraction (LVEF).

Main Results:

  • Magnesium therapy significantly increased intracellular magnesium levels and VO2max.
  • A significant improvement was observed in the heart rate performance curve factor (k) and left ventricular ejection fraction (LVEF) in the magnesium group compared to placebo.
  • Placebo group showed no significant changes in these parameters.

Conclusions:

  • Oral magnesium intake demonstrates favorable effects on exercise tolerance in stable CAD patients.
  • Magnesium supplementation positively impacts left ventricular function both at rest and during exercise in this population.
Abstract

More Related Videos

Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice04:45

Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice

Published on: May 5, 2022

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test10:21

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test

Published on: September 22, 2023

Related Concept Videos

Exercise Stress Test01:26

Exercise Stress Test

Introduction
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
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...
Cardiomyopathy III: Hypertrophic Cardiomyopathy01:29

Cardiomyopathy III: Hypertrophic Cardiomyopathy

Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
Heart Failure V: Medical Management01:30

Heart Failure V: Medical Management

Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...