Twisting techniques

Twisting techniques takes timing, coordination, and quick calculating. Remember, the more rotations you create in the twisting motion the more you increase the accerlation of the technique itself. Calculate the velocity with the additon of weight and gravity in order to figure out the maximum height you can reach in terms of jumping. When you have an idea of your jumping capabilities you can than figure out how many rotations you can pull off in that one jump. The rotations also help in gaining more hang time from friction with the air resistance from the. The twist demands excellent body execution with the right amount of momentum in to gain the amount of rotations you wish to achieve and once your in the air it all depends on keeping your center gravity focused the direction of the rotations. Placing your arms closer to your center gravity also helps in faster accleration in rotating and better control of the twist. Timing comes into key of when to land in order to avoid having all of the kinetic energy created from the twist going through a single point in the body which will cause injury. Use your eyes to spot the place you planned to land in order to have a cleaner landing. When you begin to get used the physics of twisting you can begin to try out the more advanced techniques that require strong whipping force from the legs and flipping mixed in to add more aero dynamic efficieny. Some of the more advanced parkourists use these techniques in order to gain more height from already high points in order reach higher ledges or get over obstacles.
Examples:
  
Butterfly twist
-does not take much height and can be done from a stand still position, but requires a lot of built up potential energy.

Corkscrew
-similar to the butterfly twist, but instead goes into both a twisting and flipping motion that helps greatly in gaining more hang time and flips.
Please comment tmy blog and thank you for reading.

Tuan Tran

How do they do it?

Lets first get this one thing out of the way, parkour and free running are actually two different styles of dynamic traveling. Parkour is all about getting from point A to point B in the shortest time and most efficient manner possible. Free running is taking an urban area and turning it into a improvised, tricking playground. The risks for both are the same and the methods are similar, but parkour is no where near as flashy as free running.  I prefer parkour since the physics of the style can actually still improve and it has a lot of potential in terms of the techniques themselves. It has it dangers, especially when it comes to rooftops or huge gaps, but the techniques uses the physics of the human body and how to redistribute the energy in order to decrease the force by 60 or 70 percent. A good formula for clearing a gap when it comes to distance would be v^2/g. Basic techniques that require a lot of practice and a lot of calculating of placement, energy, and timing would be the flips, drops, jumps, and climbing. Good examples:

The Wall run:

Accounts for friction, weight distribution, and velocity.

Precision Jump:

Calculate the potential energy to kinetic energy in order to land on the specific point.

Roll:
 
 Used to decrease the energy greatly from high falls and to redistribute the energy through the shoulder back into the ground.(spot where you want to land in order to begin the roll)

Parkour also demands that you train your body in order to get used to the physics of the techniques and also have you figure out your techniques that you can apply to the originals that helps you move better or safer. The more advanced techniques go into the longer hang time for flips or do more flips in one leap and some require high velocity rotations in order to even start the technique.Hope this was a decent introduction to the physics of parkour and feel free to give your opinions they would help out a lot.

Tuan Tran