whichperson would u chose?

Question

student a- claims that a person will be able to squeeze a clothespin more times in a minute if the person exercises first. student a suggests that exercising produces a faster pulse rate which indicates that the blood is getting to the muscles faster.

student b- claims that a person will be able to squeeze a clothespin more times in a minute if the person does not exercise first. student b suggests that exercise takes energy away from the muscles, and a person who has been resting will have more energy.

which of the two students do u agree with? ..and how could u find out for sure which claim is correct?

Answer 1

It depends on both the type of exercise and the fitness of the subject. A fit person may benefit from a "warm up". An unfit person, however, may encounter muscle strain that will not recover quickly and therefore reduce the squeezing rate.

The way to find out for sure is easy: Set up an experiment with an exercise group, a non-exercise group, and a control group.

Answer 2

I did this in lab class. It is definetly student a. To find proof, set up an experiment. squeeze the clothespin as many times as you can in a minute after sitting still for a minute or two. Sit still again and then squeeze again. (you're doing it twice to make sure it wasn't a fluke) That represents student b's claim. Next run for a minute or two. Squeeze for a minute. Run again. Squeeze for a minute. When did you have more squeezes? A or B? It's A, it seems dumb but after running it increases the blood to your fingers and your finger muscles! Strange, it wasn't what I had thought.


I disagree with "The Answer Man" you shouldn't have different people do the resting and the excersize. You never know, the A people could naturally have stronger fingers and using two groups makes more than one indepentant variable in your experiment.

Answer 3

Both are good, but . . . student "a" neglects to realize that squeezing a clothespin so many times in a minute will cramp the hand so practicing will only make it worse on the final try.
I think I would agree with student B.
Solution: test this claim. I think it would be fun. see how many times you can squeeze a clothespin in a minute. Record that number, and then do it again. record that result also. If the first number is higher, student "b" is correct. If the second number is higher, student "a" is correct.

Answer 4

I would definitely go with student a. Our bodies are made to warm up first and the exercise. Watch wrestlers, boxers, and all kinds of other athletes who need to get maximum performance from their bodies. They will skip rope, shadow box, and do anything they can to get their blood moving.

The best way to prove this is to set up a class experiment. Have the class split into two parts.

Group A is very still and does nothing.
Group B follows you in a couple of very simple exercises (walk in place, side straddle hops, and whatever you can do to raise the heart rate). Do it for say 3-4 minutes.

Then hand out clothespins to everybody and have them count the number of squeezes they get in one minute.

Record the results of each person.

Tally them up and get the averages.

The group that exercised will have a better result.

Answer 5

I would agree with Student A as the muscles in the person's hands/fingers are used to the extension/retraction. Of course, the study would also depend upon the manual dexterity of the subjects. If either one has poor hand coordination, the experiment will be moot.

Answer 6

a b/c just think. most people must practice a sport to be good at it. plus athletes must do warp-ups before a game