• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigating the relationship between exercise and pulse rate

Extracts from this document...

Introduction

Investigating the relationship between exercise and pulse rate Hypothesis Exercise has a direct impact on pulse rate. Pulse rate will increase as the exercise gets more energetic. Introduction When the heart contracts a surge of blood flows into the aorta and the pulmonary artery under pressure. The volume of blood pumped out from each ventricle is referred to as the stroke volume. The total volume pumped out per minute is the cardiac output. The surge of blood distends arteries as the walls of arteries contain elastic tissue. The stretch and subsequent recoil of the aorta and arteries travel as waves through the body. This is the pulse. The pulse is measured at the wrist where the radial artery passes over a bone, or at the carotid artery at the neck, so this is where it can be felt most. To measure the pulse, count each 'beat' for 30 seconds while person is sitting, and doubled to give resting pulse rate in beats per min (bpm). ...read more.

Middle

Carbon dioxide is produced as a waste product of respiration, and this is toxic to the body, and cannot be allowed to build up. As the oxygen diffuses into the muscle cells, carbon dioxide diffuses out down a concentration gradient. This is carried back to the lungs where is diffuses out as we exhale. The heart needs to pump fast to remove this toxic gas too. I predict that the direct relationship between pulse rate and exercise will be quite hard to measure as different variables will affect the pulse rate. Some variables are: * age * sex * height * weight * current health * previous health history (i.e. suffer from cardiovascular or pulmonary disease * medication * time of day * how much sleep the person got the night before * what exercise has already been carried out today * current fitness level * time since last meal * type of exercise * which muscle groups are being used * ...read more.

Conclusion

Count each beat for 30 seconds then multiply by 2 to get beats per minute (BPM). Record in a table. 2. Using a stopwatch, subjects should walk at a normal pace for 1 minute. The pulse should be measured as before, and recorded in the table. 3. Subjects should rest for a minute so pulse rate returns to normal. 4. After a minute, subjects should jog briskly for 1 minute. Pulse should be recorded as before 5. Subjects should rest for a minute so pulse rate returns to normal. 6. Subjects run at a fast pace for 1 minute, then pulse should be recorded as before. 7. Subjects should rest for a minute so pulse rate returns to normal. 8. Subjects run at a very fast pace for 1 minute, then pulse should be recorded as before. Table of Results 1 2 3 4 5 6 7 8 9 10 Average BPM while resting BPM while walking BPM while jogging BPM while running BPM while ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Humans as Organisms section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Humans as Organisms essays

  1. How does strenuous exercise affect your pulse rate and breathing?

    The longer exercise you do the more oxygen you need. Energy is very important because if you do not have enough energy you could not do the exercise properly and long. The energy is released from respiration. My heart has to work harder to get the glucose and oxygen in to the muscles.

  2. Should the cloning of humans be allowed?

    could exist on their own and not just be a carbon copy of somebody else. Bibliography 1 RODDEN ROBINSON, T. 2005. Cloning: There'll Never Be Another You. In: E. Rea, ed. Genetics for Dummies. Indiana: Wiley Publishing, pp 299-312 2 Cloning Fact Sheet, 2009 http://www.ornl.gov/sci/techresources/Human_Genome/elsi/cloning.shtml [Accessed 2 February 2010] 3 NOWAK, R., 2008.

  1. How does exercise affect pulse rate?

    Everybody will also rest for 5 minutes after they have done the exercise so that their pulse rate decreases back down to normal. This means that their pulse rate will not be high to start with and the results will be more accurate when measured from a resting pulse.

  2. Effects of Exercise on Cardiac Output.

    the sprint the body starts to repay the metabolic debts which leads to faster and deeper breathing due to the need of large amounts of oxygen. Once oxygen has been supplied to the muscle cells, the metabolic rate has been repaid and any damage repaired, the heart rate can then

  1. Effects of Exercise on Blood Sugar Level and Pulse Rate.

    When the glucose level in the blood falls during exercise more glucose is formed by the action of another hormone called Glucagon. The pancreas produces glucagon. Its function is to help maintain a normal blood-sugar level. As opposed to insulin, which is a hormone that serves to lower the level

  2. How does exercise affect the pulse rate?

    The arteries are of high pressure and are thick, they are like this because the blood needs to get to all the body's cells as quick as possible so the blood speed is fast. The arteries also bring the energy we need to keeps us going.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work