Pulse Investigation

... Year 10 Biology coursework Pulse Investigation By Malcolm Manekshaw 10MQ Aim My aim is to investigate one factor that affects pulse rate. I thought about this for a while and read a few medical books before deciding that I would investigate how physical activity can affect pulse rate and the recovery rate Prediction I predict increasing physical activity will make the pulse rate go higher because exercise increases the rate at which energy is needed from food. This increases the need for both food and oxygen in the body. This is why your pulse rate increases with exercise. Your pulse is just an indication of your heart rate as your arteries expand each time the ventricles pump blood out of the heart. Your heart speeds up to pump extra food and oxygen to the muscles. Also increasing the physical activity will slow down the recovery rate because there is more lactic acid, due to anaerobic exercise, to

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