maths need help?

Question

this is about pulse rate, i need to design and carry out an investigation to show different ways in which pulse rate can be affected
not everyone has the same pulse rate and pluse rate can be affected by a number of different things.and also need to write an hypothesis about how someone's pluse rate can be affected. don't no how to go about it.

Answer 1

For a simple pulse rate experiment that I do in school with my students, I get them to compare the pulse rates of:

a) a young child (3-5 yrs old, from your Primary school), a teenager (13-16 yrs old, from your Secondary school) and an old person (50-60 yrs old, the different grandparents).

[You will find that the older a person is, the slower the heart rate, unless that person is exceptionally fit. So choose ordinary people, not athletes.]

b) a group of 5 friends at rest and the same 5 friends after a sprint of 100m and later (after resting) the same 5 friends after a 400m run.

c) a group of 5 friends (on a different day) at rest and the same 5 friends after drinking a glass of Coca Cola or coffee (whichever is more convenient)

Answer 2

I think you may define pulse rate as `AF', where N stands for average pulse rate and F stands for the factor affecting the pulse rate.
For example you may take A=(100+160) / 2 = 130 ; where 100 and 160 are the lower and upper limits of the normal pulse rate of newborn infants. Or you may take overall data and find the central tendency with the help of statistics to find the value of A.
Further, if F= x then AF will be > A, and if F= 1/x then AF will be < A,.
Finally you will have to fix the domain of F because below and above certain values `life does not exists'.

Answer 3

is this is maths then you will probably be looking for some correlation between the rise in pulse rate and the initial pulse rate or age and pulse rate etc.

Would suggest taking anumber of volunteers, family usually get stuck doing this, take some of different ages, take their pulse rates, take their pulse rate after 5 mins of exercise, making them listen to scary music etc

Then finally plot on a graph, can examine whether the pulse rate changes are proportional etc

hope this helps

Answer 4

Pulse rate is accelerated by bacterial infection. When the organism is infected by a bacteria , you have fever.
This accelerate pulse rate in order to bring more blood to the organs. As blood has a great number of leukocytes (white cells destroying the bacteria), this brings more warriors of bacteria to the organ infected

Answer 5

well duh, exercise increaes pulse rate...also for some reason when i eat chocolate my pulse rate increases