Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

[Left ventricular function in physically active and sedentary subjects during physical exercise].

S Carrasco Sosa¹, R González Camarena

¹Depto. de Ciencias de la salud Universidad Autónoma Metropolitana, Unidad Iztapalapa, México, D.F.

Archivos Del Instituto De Cardiologia De Mexico

|March 1, 1988

Summary

This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

The effects of body position, controlled breathing and exercise on the heart rate variability parameters in healthy subjects.

Archivos del Instituto de Cardiologia de Mexico·2000

Same author

Densitometric validation of nine anthropometric prediction equations of body composition in young native men of Mexico City.

Archives of medical research·1992

Same author

[Direct and indirect maximum oxygen consumption in sedentary subjects living at a moderate altitude].

Archivos del Instituto de Cardiologia de Mexico·1989

Same journal

Basis for the therapeutic use of slow absorption penicillin.

Archivos del Instituto de Cardiologia de Mexico·2010

Same journal

Seventeen cases of subacute bacterial endocarditis treated with penicillin.

Archivos del Instituto de Cardiologia de Mexico·2010

Same journal

The evolution of our clinical knowledge on coronary heart disease.

Archivos del Instituto de Cardiologia de Mexico·2010

Same journal

The crossed and ipsilateral extensor spinal reflexes.

Archivos del Instituto de Cardiologia de Mexico·2010

Same journal

Isolated heart work under the action of ouabain, digitalin, digilánnidos, escilarina, nucleosides, adrenaline, ephedrine, metrazol and niketamida.

Archivos del Instituto de Cardiologia de Mexico·2010

Same journal

Senile jugular.

Archivos del Instituto de Cardiologia de Mexico·2010

See all related articles

Physically active individuals exhibit superior cardiopulmonary capacity and enhanced left ventricular function during exercise compared to sedentary individuals. Their hearts are more efficient pumps, handling greater stroke volumes with improved ejection rates.

Area of Science:

Cardiology
Exercise Physiology
Sports Medicine

Background:

Regular physical activity significantly impacts cardiovascular health and exercise performance.
Understanding the physiological differences between active and sedentary individuals during graded exercise is crucial for assessing cardiac function.

Purpose of the Study:

To compare the cardiopulmonary capacity and left ventricular function of physically active and sedentary middle-aged subjects during graded exercise.
To investigate the effects of exercise intensity on cardiac variables and identify physiological markers of enhanced cardiac efficiency.

Main Methods:

21 healthy middle-aged subjects were divided into active and sedentary groups.
Subjects underwent graded exercise on a treadmill with increasing intensity loads (50 watts).

Related Experiment Videos

Measured variables included oxygen intake (VO2), cardiac frequency (FC), left ventricle ejection time (TEVI), and maximal value of the first derivative of ear ensitogram (VMPDDO).

Main Results:

Active group showed higher power output, VO2, and lower FC at submaximal workloads, indicating better cardiopulmonary capacity.
The VMPDDO was significantly higher in the active group above 100 watts, reflecting superior left ventricular function.
Active subjects demonstrated higher stroke volumes and ejection rates during maximal exercise, with a reduced rate of TEVI decrease.

Conclusions:

Physically active individuals possess more efficient cardiac pumping mechanisms than sedentary individuals.
Enhanced left ventricular function and stroke volume handling contribute to superior exercise performance in active subjects.
Resistance training appears to enhance myocardial contraction, leading to improved cardiac efficiency during exercise.