Conclusion: Males have a bigger lung capacity than females. This is supported by all the results gathered by different methods of measuring lung capacity. Males take less breaths per minute compared to females, they breathe in and out more air. Males also have a higher peak flow than females, this means that they can breathe out with more power.
Lung bags and Spiropet: The spiropet gathered significantly lower results compared to the lung bags, this could’ve been because the lung bags may have had air in them before people started breathing into them. The spiropet shows results approximately a third less than the lung bags.
Limitation/problem | How it effects the results | Improvements |
Peoples resting pulse might be effected by the was they sit, they could be a fidgety person or they could be someone who sits comepletely still like a statue | The resting pulse wouldn’t exactly be the "resting" pulse, there would be some exercise involved. Then, the difference between the exercise pulse and the resting pulse would be wrong, it wouldn’t be accurate. Also, to keep the test fair, the resting pulse would have to include the same activities for everyone. | People shouldve decided on a certain way to rest. Maybe if everyone had to lay down completely still it would be better because then, everyone is truly resting and everyone would be dong the same thing |
Some people measured their lung capacity after they exercised and some did it before so the people who did it after might not be completely at rest. | If some people arent completely at rest and some are, that would effect how much air they breathe in. If they do it after exercise, most likely they would take in more air so they would have more oxygen to supply their cells for respiration. | Everyone should do each method in the same order, for example: Breathing rate at rest, breathing rate after exercise, lung bag, spiropet, peak flow. |
Different people jump vigorously and some don’t so that effects how tired they are and how much oxygen they need to supply their cells with | The people wo jump vigorously will be more tired than the other people and they would need to take in more oxygen, relulting in more breaths per minute. | Everyone should jump at the same height and speed. |
Some people jumped around the room and some people jumped on the spot. | Jumping around the room would require more power to push forward than to jump up and down on the spot. This would make the person more tired and they would need to take in more oxyen and they would have to breathe more frequently | Everyone should jump up and down on the spot to avoid the difference of energy used. |
Some people didn’t take all of the air out of the lung bags and so there was some left over. | This means that the second result they take would be the leftover air from the first result added with the new air coming in. This would give you a higher result. It wouldn’t give you the capacity of your lung, it would give you the capacity of your lungs plus the unknown mass of leftover air. | Everyone should make sure there is no air in the bag befor they do the repeat readings. This is easily done by pulling the bag over the edge of the table so that the edge of the table is forcing the air out completely. |
The measurement of breaths per minute wouldn’t be accurate because you might be at half a breath at the end of the minute. | The results arent very accurate because the results are rounded up/down. | We should've counted breathing in as one breath and breathing out as another. This would be more accurate than the pair as a whole because breathing in takes less time that the pair together. |
Some peoples lung bags were leaking. | The results arent as accurate because some of the air was let out, it excaped so the capacity would be less and inacurate | Everyone should use the same lung bag to avoid any leaks. |
Some people didn’t stop after one minute, they went over the designated time. | People were breathing more than necessary, the results werent accurate because some people carried on taking measurements after the minute. | Everyone should stop at exactly one minute, they should always be looking at the stopwatch, keeping an eye on the time and when to stop. |
Some people were in a hurry using the spiropet so they didn’t accurately turn it to zero. | The results werent taken from zero so the results wouldn’t be accurate, it would either be more or less than the actual result. | Everyone should double check that the results start from zero, they should check with other people as well. |
When people breathed into the mouth piece, it might not have been connected properly so the air might have come out of the sides. | The results would be less than the actual result because air escaped out of the side so all the air wasn’t collected. | All the mouth pieces should be put on by the same person so the tightness of the mouthpiece does not change. |
Limitation/problem | How it effects the results | Improvements |
Peoples resting pulse might be effected by the was they sit, they could be a fidgety person or they could be someone who sits comepletely still like a statue | The resting pulse wouldn’t exactly be the "resting" pulse, there would be some exercise involved. Then, the difference between the exercise pulse and the resting pulse would be wrong, it wouldn’t be accurate. Also, to keep the test fair, the resting pulse would have to include the same activities for everyone. | People shouldve decided on a certain way to rest. Maybe if everyone had to lay down completely still it would be better because then, everyone is truly resting and everyone would be dong the same thing |
Some people measured their lung capacity after they exercised and some did it before so the people who did it after might not be completely at rest. | If some people arent completely at rest and some are, that would effect how much air they breathe in. If they do it after exercise, most likely they would take in more air so they would have more oxygen to supply their cells for respiration. | Everyone should do each method in the same order, for example: Breathing rate at rest, breathing rate after exercise, lung bag, spiropet, peak flow. |
Different people jump vigorously and some don’t so that effects how tired they are and how much oxygen they need to supply their cells with | The people wo jump vigorously will be more tired than the other people and they would need to take in more oxygen, relulting in more breaths per minute. | Everyone should jump at the same height and speed. |
Some people jumped around the room and some people jumped on the spot. | Jumping around the room would require more power to push forward than to jump up and down on the spot. This would make the person more tired and they would need to take in more oxyen and they would have to breathe more frequently | Everyone should jump up and down on the spot to avoid the difference of energy used. |
Some people didn’t take all of the air out of the lung bags and so there was some left over. | This means that the second result they take would be the leftover air from the first result added with the new air coming in. This would give you a higher result. It wouldn’t give you the capacity of your lung, it would give you the capacity of your lungs plus the unknown mass of leftover air. | Everyone should make sure there is no air in the bag befor they do the repeat readings. This is easily done by pulling the bag over the edge of the table so that the edge of the table is forcing the air out completely. |
The measurement of breaths per minute wouldn’t be accurate because you might be at half a breath at the end of the minute. | The results arent very accurate because the results are rounded up/down. | We should've counted breathing in as one breath and breathing out as another. This would be more accurate than the pair as a whole because breathing in takes less time that the pair together. |
Some peoples lung bags were leaking. | The results arent as accurate because some of the air was let out, it excaped so the capacity would be less and inacurate | Everyone should use the same lung bag to avoid any leaks. |
Some people didn’t stop after one minute, they went over the designated time. | People were breathing more than necessary, the results werent accurate because some people carried on taking measurements after the minute. | Everyone should stop at exactly one minute, they should always be looking at the stopwatch, keeping an eye on the time and when to stop. |
Some people were in a hurry using the spiropet so they didn’t accurately turn it to zero. | The results werent taken from zero so the results wouldn’t be accurate, it would either be more or less than the actual result. | Everyone should double check that the results start from zero, they should check with other people as well. |
When people breathed into the mouth piece, it might not have been connected properly so the air might have come out of the sides. | The results would be less than the actual result because air escaped out of the side so all the air wasn’t collected. | All the mouth pieces should be put on by the same person so the tightness of the mouthpiece does not change. |