Name: JuliaPartners: Marley, Dong HyunDate of experiment: March 23, 2011 What factors affect the heart rate?Aim: To find out if your heart rate will be affected or different when running in placeor actually running around at the same speed and time.Hypothesis: I think that my heart rate will be higher when jogging in place becauseI’m not dispersing my energy.Variables: Input variable: We will test whether running in place or around a track affects your heart rate differently. So we will be changing the way of running. Output variable: We will measure my heart beats per minute after jogging in place, my heart rate after jogging around the track, and my normal pulse before running by using a stopwatch to record my time jogging and I will measure it by my fingers pressed to my neck to record my pulse, or heart rate for a minute (recorded with stopwatch).Control variables: Control variable 1: We will keep the amount of time I will jog the same by timing my jogging in place and around to 1:30 minutes each time with a stopwatch. Control variable 2: The speed I am running at. Marley will make sure the speed I run stays on a jog, not a spring or walk, by observing me Control variable 3: Marley will keep the person running (Julia) the same all jogging times.Materials: • Me
• My running/jogging shoes • Stopwatch for recording running and taking pulse time • Pen and notebook for recording data • Computer for inputting data • Track for running togetherMethod:1. I will take my resting heart rate 3 times2. Record on data3. Calculate the Average4. I will jog around the track for 1:30 minutes5. I will take my pulse using my finger pressed to the neck for 15 seconds6. Record the heart rate down7. Multiply it by 4 to get the BPM8. Repeat steps 4-7 two times9. I will jog in place for 1:30 minutes10. I will take my pulse using my finger pressed to the neck for 15 seconds11. Record the heart rate down12. Multiply it by 4 to get the BPM13. Repeat steps 9-12 two timesResults: DATA TABLE Trial 1 beats/ Trial 2 beats/ Trial 3 beats/ Average beats/ minute minute minute minuteAround 128 144 160 144TrackIn place 140 120 136 132
Conclusion: Our data shows that running around the tracks heart rate is more than runningin place. I think it is because running around the track you need to open your legs andgo forward, though when you are running in place, it is like jumping, but that was notour hypothesis, our hypothesis was wrong. We thought that it would be more tiring totry and write in the same position. When the more times I run when running aroundthe track, the beats per minute increase. Even though the resting heart rate goes back,my heart rate will still increase; I have no idea why it is like this. It is probablybecause the first time I did the resting rate it is 66 beats per minute, but then I couldnever get back to 66 after running once, I kept staying around 80. So we changed ourresting rate and using my finger on my neck instead of the electronic one, so thatmight be the reason why my rate would increase. I think our data is not reliable. Because you can’t control your speed and theway you run exactly the same. And according to the data, the trials difference is big.Also when jogging in place is hard to control the same speed, and the way of running.I might run one time with bigger steps and another with smaller steps, same with therunning around track, you don’t know each steps distance, it is not exact. But throughthe trials it is pretty accurate but not reliable. As you can see this is really hard tomeasure, because you can’t make it accurate, and it is hard to control yourself exactlythe same.Evaluation: I think what worked well to in our method is that it is very organized. Wefinished it early and smoothly in the first session. Unlike other people they had to useat least 2 times to finish recording data. Are whole data is unreliable so I think wedidn’t have lots of part really well, except being organized. I think our method isreally good and organized, but the topic we chose is too hard to control. Next time wehave to be more careful about the speed. If I did this experiment again, I will do adifferent input variable that is more accurate to test the heart rate. Because the inputvariable we chose for this experiment is too hard to measure. So I actually don’tprefer any future testing, I don’t want to do it anymore because it is so hard tomeasure and it can’t be 100% accurate, not if we use the treadmill which is accurateabout the speed and time, but what would the input variable be?