Today we are at the a sports engineering lab to compare two different types of kicks
the 1st kick is the jumping front kick
and a 2nd kick is a normal front kick.
Today we have Spencer as our test subject.
He has a black belt in Taekwondo, and he has been doing Taekwondo for 6 years.
He will now execute both kicks,
and then we will calculate and analyze the data.
So now we are recording the amount of 'ground reaction force' with the software "Byware".
Basically, there is a force plate on the ground.
And it will calculate the amount of force placed on the plate (ooooh #pun)
Spencer, can you demonstrate, putting force?
(*mutters behind camera TO GET ON THE PLATE*)
So that footwork (force) will generate a graph (blue = downwards force)
So now we'll be doing the front kick.
Then that's the force recorded. The highest peak is the one that we need to record down.
As seen in the graph, it stands
at 1,100 Newtons of ground reaction force generated from a normal front kick.
As for the jumping front kick, the ground reaction force is higher
as there was a short run-up
resulting in more force planted during the preparatory phase before the execution of the kick
which stands at about 2,500 Newtons
For the jumping front kick,
the ankle is dorsiflexed to build up the maximum force.
The force generated will transfer from the ankles to the knees
then to the hip which allows full extension of the leg with maximum amount of force
transferred to the distal joint, which is the ankle.
For a front kick,  it is similar to the jumping front kick.
the ground reaction force is transferred from the ankle to the knee
then to the hip
to the right knee then to the most distal joint, which is the right ankle
and which is also the point of contact.
For impulse momentum theory, we can use the distance from the jump to the point of contact
divided by the time recorded for the leg to travel at the distance to measure the speed of the kick.
For a front kick, it is 1.86m divided by 20 milliseconds
which would result in a 9.3m/s travel.
Then for a jumping front kick,
we take 1.8m divided by 12 milliseconds
which will result to 15.5m/s
Thus it is evident that the jumping front kick has a greater velocity
compared to the normal front kick
and the point of contact at the ankle is definitely traveling faster
which means that it has a greater 'impulse momentum'.
So that's the end of the analysis
so I hope you guys enjoyed it!
(Miss Tan why you laugh haissss)
*videographer*
*data editor*
*presenter*
*test subject*
