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Investigating The Effect Of Exercise On Pulse Rate

834 words - 3 pages

Investigating the Effect of Exercise on Pulse Rate

Aim: To see what happens to the pulse rate during exercise.

Prediction: I predict that the pulse rate will increase in order to
take more oxygen for respiration. The heartbeat will increase and
become stronger to transport oxygen and carbon dioxide to and from the
muscle cells. The breathing rate will increase in order to get rid of
the extra waste such as Carbon dioxide. Respiration is the release of
energy. Anaerobic respiration occurs during prolonged exercise as our
heart and muscle use up a lot of oxygen, this prevents oxygen from
being transported to the lungs quick enough. The word equation for
this is Glucose---- Lactic acid and energy. I predict that there will
be a gradual increase in both the smoker and non-smokers pulse rate as
the body begins to work harder the heartbeat is forced to increase,
therefore the heart rate will increase.

There are several factors as to why I predict that the heartbeat will
increase in a smoker and a non-smoker. Due to the toxic chemicals such
as nicotine and tar that are found in cigarette smoke your heart rate
will increase, this will cause your blood vessels to contract. The
tar, which is found in the cigarette smoke, irritates the air passage
and Carbon dioxide then reduces the ability of blood to carry oxygen
through the bloodstream. I predict that the non-smokers heart rate
should be smaller during exercise as they have a healthier more
effective heart. Oxygen is easily pumped around the body this reduces
the amount of work that the heart has to do therefore decreasing the
pulse rate.


*The resting pulse rate will be taken and recorded for both the smoker
and non-smoker. The heartbeat will be taken by placing your two middle
fingers on your wrist were your artery crosses with the bone. You must
ensure that you do not use your own thumb as this contains a pulse

* The results will then be recorded...

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