Affects of Exercise on the Body
The Effects of Exercise on the Body
Short-term effects on the cardiovascular system
The heart has an anticipatory response to exercise where your body raises your heart rate slightly in preparation for exercise, this would help as then your muscles are already getting more oxygen than normal and can then store this oxygen by attaching it to myoglobin. This leads to having the ability to use aerobic respiration quicker compared to having no anticipatory response. Increased heart rate and stroke volume. Heart rate is the amount of beats of the heart in a minute and stroke volume is the amount of blood pumped in one beat. If these increase then more blood is getting around the body and that means that more oxygen gets to the muscles. This happens because muscles need oxygen to do aerobic respiration in response to acute exercise. These two measurements of the body can be combined to show the cardiac output, this increases from around 6 litres a minute to around 30 litres a minutes depending on the strength of your heart. This is cardiac output and this increases from rest (6l min) to about 30l min during exercise.
Because of the cardiac output increasing, there is more blood being pumped by the heart in each beat. This then causes the blood pressure to rise as with each beat more blood is being pumped and at a faster rate compared to when resting. Starlings Law is the law that your stroke volume increases in response to an increased amount of blood filling your heart, this is because the blood stretches the walls of the heart creating a stronger contraction therefore pushing more blood out.
This is directly related to Starling’s Law of venous return.
Because of the increase in temperature when exercising, your body needs to cool its self down. One way of doing this is vasodilation, ‘vaso’ meaning vessel like veins, capillaries and arterioles and dilation meaning to expand, which is where the blood carrying vessels in your body expand and rise closer to
Short-term effects on the cardiovascular system
The heart has an anticipatory response to exercise where your body raises your heart rate slightly in preparation for exercise, this would help as then your muscles are already getting more oxygen than normal and can then store this oxygen by attaching it to myoglobin. This leads to having the ability to use aerobic respiration quicker compared to having no anticipatory response. Increased heart rate and stroke volume. Heart rate is the amount of beats of the heart in a minute and stroke volume is the amount of blood pumped in one beat. If these increase then more blood is getting around the body and that means that more oxygen gets to the muscles. This happens because muscles need oxygen to do aerobic respiration in response to acute exercise. These two measurements of the body can be combined to show the cardiac output, this increases from around 6 litres a minute to around 30 litres a minutes depending on the strength of your heart. This is cardiac output and this increases from rest (6l min) to about 30l min during exercise.
Because of the cardiac output increasing, there is more blood being pumped by the heart in each beat. This then causes the blood pressure to rise as with each beat more blood is being pumped and at a faster rate compared to when resting. Starlings Law is the law that your stroke volume increases in response to an increased amount of blood filling your heart, this is because the blood stretches the walls of the heart creating a stronger contraction therefore pushing more blood out.
This is directly related to Starling’s Law of venous return.
Because of the increase in temperature when exercising, your body needs to cool its self down. One way of doing this is vasodilation, ‘vaso’ meaning vessel like veins, capillaries and arterioles and dilation meaning to expand, which is where the blood carrying vessels in your body expand and rise closer to