For Anyone Who doing sports...

[(B2F)Tom]

Hi all VB members.

I'm arguing with a friend about sports.

There is my question :

In Tennis or Tennis Table, Which one will be the most tired : the one which is near the net or the one which is at the bottom of the court ?

Thanks a lot. Save my friend'life cause i think i'm gonna kill him :) !

[HarryW]

Err... the bottom I guess. I don't play tennis.

[(B2F)Tom]

I think too,...

But my friend (and other people) guess staying near the net make the player do more mouvements quickly, so he'll ne tired earlier.

However, the one at the bottom have to run and send back the ball.

More quick mouvements / run and normal mouvements :confused:

[Gen-X]

I think the answers simple.


Quick and fast movements require the movement of only a portion of the person's entire body mass (ie his arm at about 5-8kg).

Running the base line back and forth requires the movement of the entire body as a whole (ie 60-70kg)

Now we know that W = F.s

W = Work
F = Force
s = distance

We also know F = m . a

F = Force
m = Mass
a = Acceleration


This proves that it requires more Work and thus the expenditure of MORE energy to physically move a larger weight.


So the answer is that someone who is basically standing still but constantly moving their arms would become less tired than someone running the baseline.


HOWEVER...


The other question that arises is one of "locality". The muscles being used to run the baseline are the legs (large thigh muscles which are constantly used throughout our normal day)... while the musles being used at the net is mainly the radial deltoid of the shoulder (doesn't get as much use unless you spend your day lifting your arms above your head).

So it could be argued that the SPECIFIC muscles being used for standing at the net would "tire" before the SPECIFIC musles for running the baseline.

It all depends on your definition of "tired" as being muscle fatigue or cardio-vascular exhaustion.

[alex_read]

Been a while since I did physics equations, but common sense (the little of it I have) and experience being a keen tennis player will let me tell you it's definitely nearest the net.

You have more time to see where the ball is going to, longer to decide what shot to play & more time to move the further away from the opponent you are. Table tennis can be bloody quick any way & you hardly have any time for decisions! Just flap your arms like mad & hope you hit the damn thing (tiny tables too!) but with tennis, yep it's away from the net!