Welcome  to the site of the
"ISF Training System"
May I introduce myself to you; my name is Arie van den Akker founder of the ISF Training System. I started martial arts as a kid and the last years I’ve been teaching Ninjitsu (Kurokumo Shinobi Goshido) and at this very moment I teach Kapap, Krav Maga and Ninjitsu.

Throughout the years I’ve seen many clubs and teachers and have had many different kinds of training. Despite the fact that most of the teachers were very good and their training physical very hard, I still missed something.

Because I couldn’t find it within the known training methods I decide to work on a new system for me and my students. After a period of developing we started to test it. The system appears to be very effective.

We’ve  asked a lot of instructors what they think of the system and without any exception they were very positive about it. One master of the Wingate Institute in Israel said: Interval training is not new, you will find it everywhere. However it has never been a system in itself. And it has never been written down to such a simple system as the ISF Training System.

The ISF Training System is useable for everyone at every level. I want to introduce you to surf along the site and discover what the ISF Training System can do for you.

When ever you have any questions, please use the "contact" form on the site.

Sportive greetings,

Arie van den Akker
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