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

The aim of the experiment is to find the effect of exercise on the heart rate

Extracts from this document...


DESIGN: Aim: The aim of the experiment is to find the effect of exercise on the heart rate Background: 'As a person exercise the heart rate increases because the muscles need more blood, which delivers oxygen and nutrients to them.' Jim Slogan 'The heart rate is increased by the sympathetic nervous system, which is controlled by the medulla oblongata, when a person exercises his carbon dioxide concentration in the blood increases, thus the blood pH increases and the pituitary gland senses the change, causing the sympathetic nervous system to increase heart rate' IB biology book Hypothesis: An increase in exercise will increase the heart rate. ...read more.


* Water level in blood (the higher the water level the higher its volume, making it easier for blood to reach an organ with fewer bumps) * Stimulant drugs * Hormones Materials: - 1x chair - 1x Handgrip heart monitor - 1x Stopwatch (+/- 0.02) - 1x Laptop with software Logger Light v1.5 installed - 5x Healthy volunteers with same size and age - Microsoft excel used to note the data Method: 1. Find 5 volunteers 2. Assign each volunteer a letter (A, B, C, D, E) ...read more.


DATA COLLECTION AND PROCESSING: Raw data: Students Heart rate before exercise/ bpm Heart rate after exercise/ bpm A 68 133 B 86 150 C 93 178 D 68 145 E 99 145 Processed data: Before exercise After exercise Average 82.8 150.2 Standard deviation 14.27 16.75 Standard error 6.38 7.49 Conclusion and evaluation: Conclusion: The result supports my hypothesis, and agrees with current knowledge, as it can be seen in the processed data the table shows that the average increases from 82.8 to 150.2 with 67.4 beats per minute difference. Evaluation: The results that were produced from the experiment matches with the current knowledge. Source of errors can be the stopwatch or that the volunteers can not be equally motivated. ...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. The aim of the experiment is to find out the effect exercise has on ...

    This is an automatic reflex. The result of the heart beating faster is that more blood can be sent to the muscles. The arteries serving the muscles widen, whereas those serving less needful organs get narrower. The result is that extra blood is diverted to the structures that need it most.

  2. Research - should salt be banned from processed foods?

    Pressure Unit, St George's Hospital Medical School, London SW17 0RE Top References Response EDITOR-That small reductions in salt intake (2 g/day) have a small but significant effect on blood pressure is hardly surprising.1 Nevertheless, in populations this would have a large effect on reducing strokes, heart attacks, and heart failure.

  1. The effect of exercise on gas

    Skeletal muscles provide the force for breathing and as they have no pacemaker activity, they depend entirely on the nervous system for stimulus to contract. There are two separate neural systems that control respiration; voluntary control and automatic control. Voluntary control originates in the cerebral cortex whilst the automatic control originates in respiratory centres in the pons and medulla.

  2. Investigate the effect of exercise on our heart rate.

    This energy comes form respiration. Our main sources of energy are carbohydrates and fats in our food. Our food is first is broken up down by enzymes I the gut. This produces small molecules, such as glucose. During respiration, glucose reacts with oxygen to form carbon dioxide, water and energy.

  1. Daphnia are the organisms that are involved in this experiment to find out what ...

    This included 1 minute before submersion in alcohol, 3 minutes during submersion in alcohol and 3 minutes after submersion in alcohol. I then found the percentage decrease of the heartbeat of the Daphnia from the resting heart rate. At the highest concentration of ethanol solution, 1x10-1gcm-3 the greatest percentage decrease of heart rate was 86.5%.

  2. The aim of this experiment is to find out what the effects of exercise ...

    This is because I am used to exercising and I think that my body needs the higher oxygen demand after I have got well into physical activity. * I think that if I do an anaerobic exercise, I will reach my maximum heart rate much quicker because I will be

  1. Analyse and evaluate the effect of exercise on the ECG trace

    The P wave is a representation of the time it takes for atrial depolarization. It is viewed normally as small and curved with a positive deflection. Seen at it's tallest on lead II. (Rowell and Shepherd 1997) T Wave Ventricular repolarization which follows ventricular depolarization, is represented by the T wave.

  2. The aim of my investigation is to measure the effects of BMI (body mass ...

    148 The result above is an outlier, due to the fact that his recovery time is much lower than the other person for that group. Due to this result, there does not really seem to any particular correlation between the two variables.

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