An investigation on the changes in tidal volume and vital capacity of lungs before and after short-term exercise.

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IB biology HL Internal Assessment                

Candidate name: Emma Engsø Andersen

Candidate number: dyv401 (000598-0005)

IB Biology

Higher level

Internal Assessment

An investigation on the changes in tidal volume and vital capacity of lungs before and after short-term exercise.

Candidate name: Emma Engsø Andersen

Candidate number: dyv401 (000598-0005)

School: Nørre Gymnasium

Class: 3i

Subject: Biology HL

Number of words: 1872

Submitted: 15/12/13

Table of contents

Design………………………………………………………………………………………..

Research question…………………………………………………………………..        1

Hypothesis………………………………………………………………………….        1

Variables……………………………………………………………………………        1

Apparatus…………………………………………………………………………...        1

Method……………………………………………………………………………...        2

Data collection and processing……………………………………………………………..        2

Student’s t-test……………………………………………………………………………...        8

Conclusion and evaluation…………………………………………………………………        10

Appendices…………………………………………………………………………………        12

        Appendix I…………………………………………………………………………        12

Research question

What effect does short-term exercise (5min) have on the tidal volume and vital capacity of the lungs of young adults (18-19 years old)?

Hypothesis

Tidal volume and vital capacity of the lungs of young adults (18-19 years old) will increase after short-term exercise (5min) due to a higher demand of oxygen.

Variables

Independent variable:         Exercise on a spinning bike for 5min.

Dependent variables:         Tidal volume.

Vital capacity.

Controlled variables:         The age of the participants.

The number of participants.
        The start setting of the spirometer (0).

                                Time of period of exercise (5min).

Uncontrolled variables:         The speed at which the participants bike at on the spinning bike.

                The weight of the participants.

                Amount of exercise participants have done prior to experiment        The height of the participants.

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        The gender of the participants.

Apparatus

Consent form

Spirometer (cubic centimeter, /cm3)

Stopwatch (seconds

10 disposable mouthpieces

Spinning bike

10 participants were chosen to take part in the experiment (age 18-19).

Method

  1. Hand out consent form and ask participant to sign.
  2. Put mouthpiece into hose opening of the spirometer.
  3. Make sure the indicator of the spirometer is set on 0 by adjusting the indicator.
  4. Inhale normally. Put mouthpiece in mouth and exhale normally. . Repeat 3 more times. Measure volume and record as tidal volume. 
  5. Inhale as deeply as possible. Put mouthpiece ...

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