The Isokinator: The new way to get an athlectic body

Isokinator by Koelbel Training Research

Fitness has changed

Your Isokinator does not need long cables, levers, or reserving elements anymore. The machine follows for itself with all movements. Direct between your hands or feet ("companion-effect"). Feel free from the constrain-conducted movements of big training machines. The Isokinator transmits previous cable and lever actions into your arms, legs and torso. In this manner the device doubles the effects with new isokinetic (not isometric) exercises. Build your athletic body faster now.

Everything becomes simple and successful

Set a resistance and dock hands or feet in the "loops". Take the Isokinator in continuous traction and hold this resistance. Now you can move the Isokinator with powerful muscle tension. For example, horizontal, in circles or back and forth. Or vertical up and down.

Suddenly, everywhere and every time a training

It's so easy. You just need seven exercises (15 to 20 minutes / every second day). Train everywhere you want: by travel, at long-distant Airplanetravels, in hotel rooms, at the beach, in your bathroom or maybe exercise in the morning while lying in the bed. Your "Wake-Up-Training" builds your muscles silent and discreet. You can use it while watching TV or even standing under the running shower. In addition your Isokinator is an excellent help for any unbalanced kind of sport.

Impressive Results

After 36x training you will built up 38 centimeters (14,8 inches) new circumference-measurements. A scientific report confirms the Isokinator: After training 36 times there are 38 cm new circumference measurements (Institute of Sports Science at the University of Hannover, Leibniz University recently). Even whole body parts to be optimized and more efficient. It's the best combined training for health and figure.

Isokinator Classic by Koelbel and its technique

The secret of Isokinator

The device recognizes your maximal strength (100%). It then automatically switches to 70% thereof. So you work always with the ideal resistance, as the sports science calls for several years.

But now comes the best: The Isokinator keeps this 70% power continuously on during training. You train the entire moving distance always under full tension. That is, from an end point of the possible path of movement to the other end. Such a freedom of movement and optimum loading of muscles is not possible using free weights, dumbbells or even large studio equipment.

You need for each muscle group only one single effective exercise: you come out with 7 carefully considered movements. This saves time, protects the joints and it still strengthens the muscles and even tendons.

The Isokinator is after 50 years of training research the most effective and most successful fitness machine by Gert F. Koelbel.


Compact, mobile, completely silent and in deluxe quality.
Completely made in Germany with 20 year warranty!




Koelbel Training Research

athletic body



The new way to get an athlectic body by a training with the Isokinator made by Koelbel Training Research.

Isokinator Green Giant

Just received my Green Giant today. What an incredible piece of engineering! I'm a mechanical engineer and this device looks similar to the high precision parts and devices that I design everyday! I just used the machine for 5 minutes and I could feel the results. I'm really looking forward to starting the exercise program today. I have no doubts about the claims that Herr Koelbel has made about this device! A true wonder in engineering and physical health!

Thank you for your excellent customer service! Ausgezeichnet!

Isokinator A brilliant small device with BIG features

They say first impressions are every thing and I assure you .
You will be impressed as I was on first opening the box.
What a superbly designed and crafted object the Isokinator is .
The first impression when you pick it up you instantly get the feeling this device is top class
It just cry's out to be used after you smoothly adjust the kilo rating and take hold of the sturdy grips you know its going to be good the first move I made was the bicep/triceps exercise what a satisfying pump I achieved
Truly brilliant.
Its never far from me now it just such a pleasure to use all most any were any time it truly is a gym that fits in your pocket .
I like to show it of like a finely made watch its a work of engineering art to say the least and best of all it works!
The Isokinator is a investment in health and strength that should last a life time .
I could not recommend it highly enough
John ball.

Most effective training system out there

Dear Mr Koelbel,
I bought an Isokinator Green Giant several months ago. I have been using the 7 exercises every other day, Within weeks I have noticed increases in both muscular strength and mass. I work on a ship which sometimes (due to weather conditions) makes using free weights or doing push ups impossible. Since buying the Green Giant. I am no longer limited. Also the delivery to Wales was very fast and the after sales service have been great. I recommend this device and training system to anyone wanting powerful results quickly.
Thor Sulland

The Isokinator is Unique!

Dear Mr Koelbel,
I ordered the Isokinator on the third of October and received it three days later. From Germany to Wales in the UK in three days, great service! The quality of the Isokinator and the training manual is excellent, no corners have been cut anywhere. I have always trained with weights or the Bullworker but the Isokinator is by far the best muscle builder I have ever used. You have just 7 exercises to perform which work every part of the body with no overlaps so no bodypart gets overworked. The Machine is very powerful as are the movements performed with it. Yes, you have to work hard to get the results, but any exercise system that promises results without effort won't deliver. I cannot speak highly enough of this training system and anyone wanting a muscular and shapely body will do themselves a huge favour by getting their hands on an Isokinator and really working with it.
Paul Richmond.