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We are testing in our science classroom, Which exercise makes our heart rate increase the most. In our science experiment we did 3 trials of arm and leg exercises. Our control was we all did three trials for three minutes and after that three minutes we would track our heart rate for one minute and then rest for three minutes so our heart rate would get back to normal. our variable was switching after 3 minutes of doing our arm exercise and now we do our leg exercise. I have learned that the leg exercise exercise had made my heart rate go up because of the greater amount of cells, muscles, tissues, ect.
My hypothesis was that my legs would make my heart rate increase because of the more amount of cells,tissues, muscles and RBC's. Also one of my thoughts were that the weight affected the amount of oxygen needed. My hypothesis was correct because my heart rate bpm was 188. and my arm exercise bpm was 154.6.
The patterns that I had noticed were that the exercises obviously both raised my heart rate but my leg exercise did more. Also when you do windmills do not increase your heart rate as much as the legs do.
A possible source of error is if you were talking while doing your exercise it can affect your heart rate. Also if you were to cough it would take the same effect. In my exercise I had coughed during all three trials of both arms and legs so my heart rate got affected more. The improvement that you could make is maybe when you want to do this experiment make sure that you do not have a cough or a cold so your trial data does not get affected. Understanding errors is important because if the scientists that would be testing, if they did not know that errors occur they could not fix the errors.
my claim is that legs make your heart rate increase the most because of the more mass and muscles. My evidence to this claim is because when we did this experiment my class and I tracked all of our heart rate after doing the exercise. Learning the connection or relationship between the respiratory system and the circulatory system is important because the respiratory get the O2 and the circulatory system picks up the O2 when the O2 gets to the lungs and transports the oxygen to the heart. The O2 breaks down food in mitochondria to make ATP.

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me doing my squats exercise

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For Windmills I did miniature arm circles and that made my heart rate increase, I coughed so my heart rate got affected a little bit.
For the squats exercise I coughed so my heart rate got affected by that on all three trials.

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Me doing my windmill exercise

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This investigation on heart rate and exercise introduces the relationship between arm muscle and leg muscle are your affects heart rate. important terms to know are how muscular, respiratory and circulatory systems interact, heart rate and pulse and the process of cellular respiration. I also know that when I exercise my pulse is higher then the resting heart rate because I need more O2 fro cell respiration to make ATP. The ideas found in this experiment will confirm the link between the three systems interacting and the mitochondria can make ATP.
The circulatory system and the respiratory system work together because the circulatory system carries the res blood cells which take the oxygen to the heart. Then the heart pumps the blood and the O2 throughout the body. The O2 gets dropped off so that the mitochondria can break down the food and turn it into energy/ATP. The O2 is made from cell respiration left overs. Hops back on RBC to lung. Carbon dioxide is a part of this process because hen the "new" oxygen comes in the body the "old" oxygen (carbon dioxide) goes out.
The circulatory system and the respiratory system help make your muscles move because the oxygen goes into lungs and transports the oxygen on the RBC to mitochondria cells to create energy. The legs muscles are bigger because they have more cells,blood, and tissues. The legs are located below your waist. The arms are smaller because of the less amount of blood, tissues, and muscles. The legs make your heart rate increase more than the arms because of the more mass and weight.
The difference between the amount of  cells in the legs and the arms isat least four time as much as an affect we need more O2 or oxygen to move them. The arms have need less oxygen because they have less muscles, tissue, and cells. Exercise makes a greater need for oxygen because if you are running rather than walking at normal pace your heart rate is going to increase more because of the more oxygen in the process of running, also you are doing things a lot faster. More O2 turned into energy more CO2 waste is produced.
When my class did one minute exercises, my heart rate rate when up more when doing squats than doing windmills because there is more movement in the leg exercise and the the amount of muscles, tissues, and cells. Also when doing the lab " To smoke or not to smoke" my heart rate went when I used the straw because there is less air passage ways. So I needed more oxygen

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This is my cartoon for how the red blood cells travel around the body

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1. Find resting heart rate by getting your index finger and your middle finger and press the fingers under your jaw and feel around until you feel a pulse.
2. get any kind of timer or stop watch.
3. walk to an empty space in a room
4. As you prepare for today's lab be aware of your surroundings
5.start your timer on one minute by pressing the start button with your index finger.
6. Automatically after you press the start button begin you arm exercise by moving your arms in little circles in the air.
7. when the timer beeps that means that you have done your arm exercise for one minute and now you track your heart rate by pressing your middle finger and your index finger together and put the fingers under your jaw for one minute
8.  Now you write you resting heart rate, your arm exercise heart rate and your observations on page 43 in your brite cherry science inquiry booklet.
9. Now you rest fro 3 minutes.
10. Once after the resting fro 3 minutes now you go back to your empty area and reread step 2 and begin your squats by bending both of your knees , this makes your buttocks move towards the ground, once done with that start straighten out your knees. The result of that will make you stand once again then just repeat this for one minute.
11. Once the timer beeps press the stop the timer by pressing the STOP button.
12. Record heart rate and put on your data table on page 43.
13.When you have your written observations on page 43 we now add all of our arm exercise trials together then we times them my four and divide by 3 with a calculator.
14.  Since we divided by three on the calculator that will go in the average space on the data table on page 43.
15. Now that your data table is full make sure you have your control, variable for arms and legs. Once all of those things are done that's how you know you have finished this experiment.

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The materials that I used were a timer, A calculator, my arms, and my legs. Also I used my fingers to get my heart rate

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If windmills and squats are completed to see which will increase your heart rate more, then i think squats will make my heart rate go up more because my legs muscles are bigger and have more cells causing me to need more energy and made by cellular respiration. So I need more O2 pumping which increases heart rate.

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Our variable is when we did a different exercise. The other exercise that I used instead of arm pumps I did windmills

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Our control is tracking our resting heart rate using you index finger and your middle finger, also after your fingers are pressed together then put your fingers under your jaw to check resting heart rate

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Which exercise will raise our heart rate the most? Leg exercise or arm exercise?