When a person continually uses a part of his body, the central nervous system sends instructions to the body to increase the blood supply which will provide energy and nutrients to that certain muscle. Eventually, the muscle grows larger as to adapt to the strain which will be put on the muscle again, possibly in the near future.
The muscles in the body work because of the nerves which constantly send messages to them in forms of electrical impulses .When the right hand will be used of a person who is right handed, because the brain has eventually through time adapted itself in reacting accordingly, it will react a lot faster and with precision. Also, because the muscles will be a lot greater in size than the left hand, they will boost up the speed and power ensuring that the reaction is a lot faster then if it was the left hand.
Method
The apparatus we will be using are a ruler which is one meter long and couple of people from a group. We will try and make certain that we use both right-handed people and left-handed.
We will measure the results obtained from the experiment by centimetres. The ruler is one metre long with centimetre measuring and also millimetres.
We will take five results between the two hands with five members of a group. This will equal to 50 results. The members have been chosen randomly between right-handed and left-handed members.
- We will start the experiment by gathering the apparatus.
- We will commence by allowing one member at a time to carry out the experiment on another person.
- One member of the group will hold the ruler high.
- The bottom of the ruler will be lined together with the hand of the person who will have the experiment carried out on him.
- The person holding the ruler high will let go of the ruler.
- The person who is having the experiment carried out on him will respond to the movement of the ruler by catching it.
- The point on the ruler which is caught by his hand will be recorded.
i.e.: The top of the ruler will be at 100cm. The bottom of the ruler which is aligned with the hand will be at 0cm.
Diagram
Results
Total average of left hand when worked from the results of the members is 33.6cm
Total average of right hand when worked from the results of the members is 34.28cm
Evaluation
I have establish after doing the experiment with the group and viewing this information on the graph and then observing the graph this tells that my prediction was correct. The members who were more active with right hand have given the results of having better reaction time then the left hand. You can establish this by observing the results table and looking at the averages been worked out from the results which were obtained from the members and after finishing the experiment there was an overall average worked out and this shows the right hand had a higher result then the left hand. These results were shown because when the group was put together we had more right handed people then left handed people so this equalled out as right hand having a higher average.
This experiment can be changed to give better results. This can be done by having the same amount of people who are active with the right hand and having the same amount of people who are active with left hand and at same time when the experiment is been done you could have stopwatch to time the experiment.
To extend this experiment and to find out how the body reaction time is you could try tasks with other parts of the body example the foot how it react to a object been thrown at it and etc.
