This presentation on the history of biomechanics is a part of three YouTube presentations that will show how we develop the most sophisticated biomechanical system in the world.

It's used in the Olympics and I will start with the present way, how we using it and go to the historical time, how we started it all working from scratch.

Listen to the crowd.

This crowd are rising to these men.

150 meters remaining at the era of the Olympic champion.

Can't taste our world championship gold medal.

Is that a smile in the space if he runs the final hundred?

He was trying to come back on.

Can't do it. I don't think he has a space but he's trying very hard when a magnificent finish.

A barrow to the finish line and the Simon Meela.

The Olympic champion of our world champion.

Can't be a

strike.

As the race to the finish line.

Can't be a

strike.

Can't be a

strike.

Using a model technique in a 3D we can calculate three dimensions with multiple cameras all the way to nine cameras.

That's allowed us to have automatic digitizing use markers.

So it is joined actually have a marker captured by the computer automatically and then trace all automatically.

So you can see the movement of the different joint centers.

In this case we're using markers but you can also have a marker system.

In this case you have to have a manual digitizing and it will be assisted by the computer.

The result of the digitizing is three dimensional figures that you can see here in the roaring.

Going only in 3D.

We can also apply the same technique to any activity of motion.

Like for example at gate in gate analysis here using force platform or without force platform using multiple cameras.

We can identify the different joint centers and calculated different stresses on the joints we've shown here in the graphs.

You can play what if game by changing certain joint to certain position.

So in functional capacity evaluation it's helping to determine injuries.

This development started long time ago.

I would say with Leonardo da Vinci which integrated the anatomical system with mechanical systems

and created the foundation for understanding the human body.

And of course other investigators contribute Isaac Newton with his mechanical laws.

We're one of the essential person to create the whole mathematical backgrounds.

And others like Leibniz and others that there's no reason to mention them here.

One that I want to mention is Buelly which actually integrated the human body with biomechanics and calculated the stresses

and how level system working on the body was probably the first biomechanist.

And then Bruno and Fisher in the late 19th century which did all kind of calculation actually use stick figures.

Probably one of the first stick figures to describe the human body.

And of course my bridge which I'll discuss in my second episode is his contribution.

Being a disk destroyer representing Israel in two Olympics.

Here I'm carrying the flag in Tokyo and also I represented Israel in the shot in the disk in Rome Olympics.

I received a scholarship in University of Wyoming which allowed me to come to United States.

Graduated with honor from the undergraduate degree.

I got an assistantship in University of Massachusetts working toward my doctorate degree.

In Massachusetts I learned a lot, beautiful location, great university.

And I got a course a book called by Dyson the mechanics of athletics for the first time.

I saw how mechanical principles are integrated with sport activity and I got an idea for the future coach.

I started with simple analysis.

The first one was in the Journal of Ergonomics on analysis of the effect of the knee joint angle on the Harvard step desk

which was published was my first publication in 1969.

Here is Anne making all kind of calculation Dr. Ann Penny.

And here I'm doing calculation on the arm strength.

And of course my professor in the university's ten plug-in of is the one introduced me to modern biomechanics.

Here we were doing the tracing using mirrors and all the tracing were done by hand.

So all the calculation were with protractor and with pencil and a paper.

And then we created the stick figures.

We also wrote our own programs here as a kinetic program that can analyze forces at the knee joints and the hip joints

and the ankle joint.

You're representing in another publication that I had one of the original one.

And then we had other publication on the effect of the different velocity on the high jump and javelin throwing

all the kinematic parameters.

And for the first time biomechanics were using the Olympics in Mexico City.

This team hears the record has stood.

The longest jump ever made by Bob Beeman with the drama and the dream.

Although Mexico City October 18 1968.

Bob Beeman starts his approach slowly gathering momentum.

He strives stretching out 19 of them.

The last step long and piston light.

His right foot pounding the takeoff board perfectly driving himself up, up, up.

His mind goes blank.

His hearing deserts him.

Turns in the air it seems forever.

When he comes down his heels strike the sand with such force he bounds on one hop like an airplane harshly landed right out of the pit.

Bob Beeman has jumped 29 feet two and one half inches.

22 inches beyond the existing world record.

Arguably and conceivably the most spectacular individual achievement in the history of all sports.

To be continued in episode number two.