Rathschlag, M. (2013). Self-generated emotions and their influence on physical performance. Cologne: Promotions-Arbeit an der Deutschen Sporthochschule Köln [Doctoral thesis at the German Sport University Cologne].

Within the scope of fundamental researches on the effect of wingwave Coaching, the qualified psychologist Marco Rathschlag was able to prove that positive emotions, such as, “happiness” are accompanied by a higher physical strength than the emotions of “anxiety” or “sadness”.

In June 2013, the doctoral thesis by the certified psychologist Marco Rathschlag on the topic of “Self-generated emotions and their influence on physical performance” was completed. For this dissertation, the influence of various emotions on the muscle strength, which was applied during the Myostatic test, was researched. In place of a person, pulling force was applied on the fingers using an objective machine. First of all, it was examined which emotions triggered the subjects to apply more strength. For that purpose, the participants in the study had to think of situations in their life, which they associated with different emotions. The result was clear: In case of the emotion of happiness, the subjects were able to apply maximum strength in their hand and finger muscles. The results of the strength were significant in case of the emotion of happiness in the first place, and the emotion of anger in the second place. The weakest strength results were demonstrated in case of the emotions of "sadness” and “anxiety”.