Differences Between an Athletes Heart and a Sedentary Heart By Nadia Makada
VS
Contents
Introduction, Method & Results……………………. 1
Anatomical Differences between an Athlete’s Heart & Sedentary Heart…………………………………………………………….. 2
Blood Flow through the Heart & Lungs…………. 3
Heart Rate & Cardiac Output Compared…...……4
Athletes Heart compared to a Heart with Hypertrophic Cardiomyopathy………………………………………….…5
Bibliography……………………………………………....…6
Introduction
An athletes’ heart and a sedentary individual’s…show more content… Someone with a lower resting heart rate may be considered healthier. An athlete may have a lower resting heart rate as they have a high level of aerobic endurance, as the ventricles need to contract less in the same amount of time to get an equal amount of blood to where it needs to go. Someone with a heathy heart yet sedentary lifestyle may have a higher resting heart rate.
The average resting heart rate is 70-72 bpm. Your approximate maximal heart rate is calculated by subtracting your age from…show more content… The volume of blood ejected each time a ventricles contracts (the difference in the volume of blood in the ventricle before and after contraction) is known as stroke volume.
Cardiac output is the volume of blood ejected from the ventricles in a minute. Cardiac output is the response for meeting the demand of oxygen in the body. As an athlete begins to train their breathing rate increases therefore increasing their consumption of oxygen as there is a higher demand by the working muscles. Stroke volume is determined by the hearts ability to fill and empty in one beat, this dependent on venous return and the ventricles ability to stretch. These two factors increase the filling capacity of the heart.
Heart Type Number of ventricular contractions in a minute (HR) Volume of blood ejected from heart in one ventricular contraction (SV) Volume blood ejected from the heart ventricles in one minute. (Q)
Untrained 72 bpm 70/72 ml ~ 5000ml (5 litres)
Athlete 52 bpm 100 ml ~ 5000ml (5 litres)
Here is an example of the difference between a trained and untrained heart in terms of heart rate, stroke volume and cardiac
