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Plank

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Submitted By 2pinkears
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The Effect of Running on Holding a Plank

For my groups experiment we decided that our experimental question is going to be “Can you hold a plank longer if you run.”
Hypothesis-
My hypothesis in this experiment is that if you run before you hold your plank, the plank will not last as long. I think that the plank will not last as long because you will be tired from the running and also you will not have that much energy left.
Method and materials- In this experiment I did not really need that many materials because we were testing people to see if the hypothesis was correct or not. In this experiment the dependent variable would be how long you would be able to hold the plank when you were running and how long you were holing the plank without running. The independent variable would be to see how the running affects the amount of time you can hold the plank. To make the test consistent each person has to run for exactly two minutes and then immediately without taking a break go into a plank. To also make the test fair and true I would have to make sure that everyone is on the same type of surface when holding the plank. In this experiment there will four people testing my experiment. There will also be doing three trails. Everyone would be doing the same thing. First, they would run and then hold a plank and then the second time they will not run but just hold the plank.
Discussion and conclusion-The conclusion was my hypothesis was correct. I thought that the plank would not have lasted as long if they ran before they hold the plank because they would have been tired. My data supports my hypothesis because my data showed the average of holding a plank with running and without running. With running the average was 158.75 seconds. The average without running was 169.25 seconds.
S
Suggestion for improvement -
Some suggestion for improvement could be to choose subjects that are in the same age range. Another thing would be whether the subjects regularly exercise or not.

Suggestion for further research-
While I was doing my experiment I had some questions about if I did something different. One question that I had was “Does the surface that you hold the plank on make a difference on how long you can hold it for?” I think that the answer to my question was that it depends on what kind of surface it most comfortable for certain people. Another question is that “Does the running time affect the amount of time that people can hold the plank.” I answered that question from my data. Most people did not hold the plank as long when they were running.
In conclusion my hypothesis was supported by the data collected during the experiment.

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