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 (20 to 25 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.

Practical Advice- European Travel


Great piece of kit!

FYI, if you intend to take it on-board a commercial aircraft in your hand luggage, be prepared for a full security shake down. Whilst there were no issues in taking it on board, passing through the bag check caused an even longer delay. I carried the Iso-K with full manual etc. just to provide it with the necessary provenance to ensure that it wasn't going to end up being destroyed by an over zealous customs/border officer. On my return trip I placed it in the hold without issue.

I recommend buying any of the equipment direct from Koelbel- very professional and efficient- Many thanks!


muscle gun

I purchagsed the muscle gun last year off of and have been using it along with my bullworker for almost a year. I have adapted a routine that combines isokinetic/plyometric style movements for my whole body with sets ranging in the 100-300 rep range in the area of max muscle contraction. I have noticed huge strength and endurance benefits with this type of training. I am looking forward to layering in training with the isokinator i just ordered to enhance my workouts even more. thanks for the great products.
dave reigh

Just received ...

Just to let you know I received the Isokinator classic on Wednesday. I only ordered it on Saturday so I wasn't expecting it for atleast another week! Fantastic service! I have to say the item is expensive but you can tell it's made to a very high specification and it feels and works superbly. Colleagues at work were very impressed.

I've used it twice now (doing the 7 exercises shown in the manual) and my muscles were surprisingly sore the following day! This is after quite a few months of training with weights too.

Thanks for a great product and I look forward to using it for a long time to come.

Dale H