Mary Ann at 27 years of age decided to improve her lifestyle by being more active and eating healthy. After living a sedentary life she starts her training with a VO2 max at 38ml/kg/min, which is the rate of oxygen consumption that an person can utilize during intense exercise. After training for 6 months Mary Ann’s VO2 max increased to 52/ml/kg/min. I will be explaining how she was able to increase her oxygen consumption levels by increasing her cardiac output, and increasing her arterio-venous difference or in other words is the difference in oxygen saturation of the blood going to the tissues and of the blood returning to the heart.
First, your maximum VO2 is the greatest amount of oxygen you can utilize, and is a value that can be influenced …show more content…
You can increase your Cardiac Output by increasing the number of beats-per-minute of the heart. The number of beats-per-minute is referred to as the max heart rate of a person. This is limited by heredity and cannot be influenced with training.
The amount of blood pumped with each beat of the heart is referred as the Stroke Volume. The stroke volume can be greatly influenced by training. Resulting of an increase stroke volume is to increase the amount of oxygen made available to the muscle at any giving time. Increasing stroke volume has the greatest potential for improving endurance-performance. This is the formula:
Max Heart Rate x Stroke Volume = Cardiac Output
Lastly, the arterio-venous oxygen difference is a measure of the amount of oxygen taken up from the blood by the tissues. The greater the amount of oxygen extracted by the tissues, the greater the arterio-venous oxygen difference. During exercise blood flows to the tissue increases, and haemoglobin dissociates more easily; therefore the arterio-venous oxygen difference widens during exercise. With aerobic training the tissues become more efficient at getting oxygen. To calculate this we take the oxygen concentration of arterial blood minus the oxygen concentration of venous blood (deoxygenated
First, your maximum VO2 is the greatest amount of oxygen you can utilize, and is a value that can be influenced …show more content…
You can increase your Cardiac Output by increasing the number of beats-per-minute of the heart. The number of beats-per-minute is referred to as the max heart rate of a person. This is limited by heredity and cannot be influenced with training.
The amount of blood pumped with each beat of the heart is referred as the Stroke Volume. The stroke volume can be greatly influenced by training. Resulting of an increase stroke volume is to increase the amount of oxygen made available to the muscle at any giving time. Increasing stroke volume has the greatest potential for improving endurance-performance. This is the formula:
Max Heart Rate x Stroke Volume = Cardiac Output
Lastly, the arterio-venous oxygen difference is a measure of the amount of oxygen taken up from the blood by the tissues. The greater the amount of oxygen extracted by the tissues, the greater the arterio-venous oxygen difference. During exercise blood flows to the tissue increases, and haemoglobin dissociates more easily; therefore the arterio-venous oxygen difference widens during exercise. With aerobic training the tissues become more efficient at getting oxygen. To calculate this we take the oxygen concentration of arterial blood minus the oxygen concentration of venous blood (deoxygenated