Science EEI

Topics: Pulse, Oxygen, Heart Pages: 8 (1283 words) Published: May 30, 2014
Observation on heart and breathing rate

Name: Pranjal Patel
Clan: 9G3
Group members:

Introduction:
Exercise is crucial in sustaining a healthy lifestyle. For instance, exercising on a daily basis can increase muscle and help manage weight. Also, exercise can lower cholesterol levels in blood and lower the risk of type 2 diabetes and some cancers. Moreover, while exercising the respiration rate increases because he/she has to expel the carbon dioxide produced by the muscles. Additionally, sweating is used by the body to keep it from overheating and is a great way to get rid of dirt and toxins which are gathered by pores in the skin. Furthermore, Homeostasis is the ability to maintain a constant body temperature in response to environmental changes. The nervous and endocrine systems control homeostasis in the body through feedback mechanisms. Recovery time is a very good indicator of your fitness level. Recovery time refers to the number of beats the heart drops during 1 minute immediately after exercising. In general, the heart rate of a fit person will drop more quickly than that of a less fit person. Likewise exercise causes a person’s heart rate to increase this because the body needs the heart to carry out functions much more rapidly while exercising. Nevertheless, the variables controlled in this experiment included, the intervals at which the athlete’s heart rate and breathing rate were checked and the distance (the width of a class room) the athlete had to run was kept the same. The variables that were measured were the person’s heart and breathing rate and also their production of sweat as the person exercised. In summary exercise can do a number of things to benefit us and is essential for us to exercise in order to remain healthy and strong. Aim: to investigate the rise in pulse and breathing rate when exercising and the time taken for the pulse and breathing rate to return to normal as well as the production of sweat when exercising. Hypothesis: as a result of exercising the heart will pump more blood into the veins and beat faster when exercising. Therefore the breathing rate will increase to clear out more carbon dioxide in the blood. Risks

Hazard
Risk
Safety measures
Running
Tripping
Run carefully
The body temperature monitor
Falling on the leg
Hold it tightly

Materials:
Pen
Notebook
Stopwatch
Data table
“sweating” key

Method
A task was assigned to each of the group members. The roles were: athlete, scribe, timekeeper and data collector An area in the school was identified by the teacher where the athlete could do the activity. The activity was chosen by the teacher to run up and down in a class room at P block; the activity was chosen so athlete could come back to the group every minute. The stopwatch was started

The athlete’s breathing and pulse rate was measured for 15 seconds after a minute’s exercise and then multiplied by four to get the pulse and breathing rate for a minute. The sweat on the athlete’s skin was determined by a four-point scale to represent sweating production. The data was recorded in a data table

After 5 minutes the athlete stopped exercising
The breathing rate and the pulse was measured and recorded every minute and the production of sweat was also recorded every minute for five minutes

Table 1
Time
Heart Rate
Breathing Rate
Skin sweating rating
Body temperature

15 secs
1 min
15 sec
1 min

0
15
60
15
60

34.0
1
21
84
6
24

34.2
2
37
148
10
40

35.2
3
40
160
7
28

35.4
4
57
228
10
40

35.2
5
45
180
7
28

35.7
6
23
92
9
36

35.4
7
29
116
9
36

36.5
8
21
84
13
52

36.3
9
19
76
19
36

36.6
10
18
72
11
44

36.5

Graph 1

Graph 2

Graph 3

Diagram of Equipment
Equipment...
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