Heart rate during exercise?!
Question: Heart rate during exercise.?
i need to know what the heart rates role is during exerciseHealth Question & Answer
Answers:
I take GCSE PE so hopefully I can answer it at th level you are looking for:
The heart pumps blood around your body, and your blood contains oxygen, which is needed in order for your muscles to 'respire' (which basically means 'to work'). At rest, your muscles need only a small amount of oxygen, as they aren't working hard (respiring much). This means that your heart doesn't need to pump much blood around your body.
However, when you exercise, your muscles demand more oxygen, causing your heart rate to increase, as it tires to get more oxygen to your muscles to help them work.
At rest, your heart rate is low (resting heart rate - RHR), and when running or exercising your heart is beating faster to pump more oxygen around (working heart - WHR)Health Question & Answer
The heart pumps blood around your body, and your blood contains oxygen, which is needed in order for your muscles to 'respire' (which basically means 'to work'). At rest, your muscles need only a small amount of oxygen, as they aren't working hard (respiring much). This means that your heart doesn't need to pump much blood around your body.
However, when you exercise, your muscles demand more oxygen, causing your heart rate to increase, as it tires to get more oxygen to your muscles to help them work.
At rest, your heart rate is low (resting heart rate - RHR), and when running or exercising your heart is beating faster to pump more oxygen around (working heart - WHR)Health Question & Answer
Simply put, it's just to compensate for the working muscles during exercise. When your muscles are working hard, it requires not only stored glycogen (carbohydrates) but is also needs Oxygen for it to function well. Since hemoglobin (O2-carrying molecule) in the RBC (Red blood cells) is one of the component of blood, heart rate increases to deliver more O2 to the working muscles and provide the needed O2 for the muscles to continuously work efficiently. In the same way, your Respiratory rate increases (rate of breathing) to supply your lungs with enough oxygen and in turn increase the oxygen content of your blood. It's the body's basic adaptive response to exercise, which is considered a certain level of stress that the body needs to overcome. Health Question & Answer