because to get the grip
There are spiked heels in javelin boots and on the take-off shoe in high jump.
The spikes dig into earth and so give better traction.
Yes they wear shoes with spikes at the bottom of it.
Yes you can run in track shoes without the spikes but, I think that you should have spikes at the bottom of your track shoes because if you have the spikes then you can run faster than you would without them. Track and Field athletes that run during the indoor season run with studs, also known as blanks, in their shoes so as to not ruin the shoe or the track. They still choose to wear their spike shoes do to the lightweight nature of the shoe and the fact that they are accustomed to running in them. However, it is not recommended to wear stud/blanks on outdoor tracks.
I think is 7 spikes for each sprint shoe.
If you are running on a track, you can wear spikes, just make sure there is a cushion in the heel. Sprinter spikes have very little heel cushion.
Spikes should be removeable because they wear out pretty easily. If your spikes don't come out there is something wrong with your shoe. It is only bad to run with your spikes still on when you're not running on track or grass. NEVER run with spikes on concrete or anything else!!! It is not bad to run around with no spikes on your shoes, I do it all the time :)
No, I do not recommend using regular track shoes to throw the javelin. Javelin spikes have spikes in the heel as well as the front, so you can plant your block leg without slipping. Generally speaking javelin spike shoes are a heavier shoe. This allows for the much longer spikes. However, some athletes do wear there "regular" spike shoes and purchase a "jav heel" to add the extra much needed spikes in the heels.
you can usually get good spikes specifically for triple jump, look on google and find some spikes their, it should tell you if they are specific to triple jump.
Sports shoes have different treads to provide grip depending on what terrian they are being used on. For example: Soccer shoes have studs in the bottom to provide grip in the slippery mud etc.
they have different bars and mats and also the athletes wear spikes on their shoes. Back then they diddn't have spikes on their shoes US Athlete Dick Fosbury was no flop......
These are not called needles but spikes the spikes get put into the shoe. It's to stop you falling in crosscountry races and slipping on the track.It is actually quite confusing because as well as the shoe being called spikes the jaggy things are called spikes too.