Friday, June 29, 2007

Major lab project

Introduction:
I started this project by wanting to compare different transformations of the heart rate. I went from a stage of resting, to a stage of running, and then a stage of walking. I feel that all of these stages brought very different reactions for me.


"Heart rate is a term used to describe the frequency of the cardiac cycle. It is considered one of the four vital signs. Usually it is calculated as the number of contractions (heart beats) of the heart in one minute and expressed as "beats per minute" (bpm). See "Heart" for information on embryofetal heart rates. The heart beats up to 120 times per minute in childhood.
When resting, the adult human heart beats at about 70 bpm (males) and 75 bpm (females), but this rate varies among people. However, the resting heart rate can be significantly lower in athletes. The infant/neonatal rate of heartbeat is around 130-150 bpm, the toddler's about 100–130 bpm, the older child's about 90–110 bpm, and the adolescent's about 80–100 bpm.
The pulse is the most straightforward way of measuring the heart rate, but it can be deceptive when some heart beats do not have much cardiac output. In these cases (as happens in some arrhythmias), the heart rate may be considerably higher than the pulse rate.Your hypothesis. What do you expect to happen to your metabolic measurements after each activity?


I believe that I will have a big transformation in these activities. Where when I am do the running I will have the fast heart rate, and have the biggest reaction of feeling tired, and sore. While during the walking my heart rate will be somewhere in the middle, and resting it will be a calm and steady heart rate. "


Your data.
running-
My heart rate is higher when running on a hot day. The temperature was around 75 degrees, my heart rate at a given speed increases by about 2 to 4 beats per minute. When the temperature increased from 75 degrees to 90 degrees, my heart rate running at a given speed to increase by approximately 10 beats per minute.

walking-
My heart rate was not as high as when I ran on the hot day, But at about 85 degrees and walking my heart rate increased by 2 to 3 beats per minute.


Resting-
My heart rate sitting in my chair in a air conditioned place, was 72 beats per minute.

Conclusion.
I felt that this was a very interesting assignment, Many of the changes in the heart rate when doing this assignment were very different then one another. I was amazed that just sitting there, how often my heart beat was.

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