Author: Henk Kraaijenhof

One of the advantages of travelling to the US is the buying of books that are not available yet, or much more expensive than in Europe. So I just bought an interesting book “My Share …

I hope the name Philippus Aureolus Theophrastus Bombastus von Hohenheim rings a bell. This Swiss-born “master of medicine, chemistry and magic”, better known as Paracelsus,  already wrote 500 years ago: “All things are poison, and …

Picture this:  you are a famous coach with a very good name in sports. Why? Because you are known to always bring out the best of your athletes and you bring the results. Now this …

The frequency of posts for this blog has been lower for one simple reason: I am swamped with interesting projects as you might have guessed. What is keeping me busy? Amongst others my daily work …

In my daily work I encounter a lot of clients with a wide range of mostly stress-related symptoms, like fatigue, sleep problems, muscle pains, etc. Now the last year I find a surge of clients …

In sports training many tests are used for testing and monitoring the status of athletes. From simple field testing with measuring tape and stopwatch, to hi-tech scientific tests. One simple test that is not commonly …

Yes, it has been busy last week and this week too, almost too busy to write a post.What kept me busy, apart from my courses and consulting with more private clients than ever? Read below. …

It was during the summer of 1994, when I visited one of my mentors, prof. Carmelo Bosco.Somehow we came to the observation that kids when awake often fall asleep when put in the backseat of …

I know a few respected colleagues that have mastered the ability to see things that I never could see. One of them could see if his high jumper is taking off at an angle of …

HRV or heart rate variability is a rather old tool to monitor the status of the athlete. HRV was already used in the 1960’s and 1970’s in the former USSR for this purpose. Nowadays unfortunately …