Heart and Breathing Rate M/f Before and After Exercise

Science:

Abstract:

This investigation is to show the raspatory and circulatory systems in deeper meaning. It also explains the reasons for why breathing and heart rate becomes higher during physical activity, and if there are any differences between female and males.

This experiment shows the biological principles, and how to record and produce data of a quality standard.

Introduction:

Air goes into the alveoli when we breathe in. This lets the veins around the alveoli drop of their carbon dioxide and pick up oxygen. The oxygenated blood travels around the body and drops of oxygen to cells and picks up carbon dioxide. It travels back through the veins through to the heart and then to the lungs again and repeats the progress. Cells use oxygen and produce carbon dioxide when being more active.

The subjects were moving to make their cells become more active. The reason for this was to find how this effected the heart and breathing rate. The subjects were separated into male and female to look for a difference between the genders breathing and heart rate.

Hypothesis:

1. The rate of heartbeat decreases as physical activity increases.

2. The rate of breathing increases as physical activity increases.

3. Females have a higher rate of heartbeat at rest than males of the same age group.

Materials:

 Stop watch

 Pencil and paper

 24 subjects

 Running area with a slope

Method:

1. A heart rate was recorded from all subjects after resting for 5 minutes. The heart rate was taken counting carotid pulse by using two fingers on the subject’s neck where the pulse is for 30 seconds, then multiplied the count by two.

2. The subjects resting breathing rate was recorded by placing two fingers under their nostrils and counted the outward breaths for 30 seconds then multiplied by two.

3. The subjects then did moderate exercise by running up and down a slope for 1 and a half minutes.

4. The breathing and heart rate was then immediately taken using the same technique as points (1.) and (2.).

Results:

Name Sex (M/F) Heart Rate Beats per minute Breathing Rate / Min

Before exercise After exercise Before exercise After exercise

Kirsten F 68 136 18 16

Holly F 64 140 14 12

Jordy M 68 176 17 28

Gemma F 68 74 20 30

Will M 84 144 13 40

Jake M 72 152 12 40

Mickayla F 68 156 12 44

Tahlia F 64 148 12 72

James M 76 120 10 18

Callan M 68 112 19 8

Jake. T M 108 160 18 42

Kate. T F 64 128 14 48

Sara F 56 120 24 40

El M 72 152 11 24

Max M 64 36 30 43

Jade F 64 140 26 40

Maddy F 88 140 26 34

Mallory F 64 152 12 48

Matthew M 68 168 30 60

Georgie F 96 156 24 44

Alex M 84 92 28 60

Emma F 72 116 10 30

Keely F 72 116 121 34

Female

Average Heart Rate Beats per minute Breathing Rate / Min

Before exercise After exercise Before exercise After exercise

70 132 26 38

Male

Average Heart