Besser-Siegmund, C. u. (2013). Mit Freude läufts besser - durch wingwave positive Emotionen fördern und Leistung steigern [With joy, the going gets better - promote positive emotions and enhance performance through wingwave]. Paderborn: Junfermann-Verlag.
A point of criticism of the “classic Myostatic test” lies in that one had no experiences till date as to how often one can conduct that test without fatiguing the finger musculature of the subject. Therefore, the object of the following study was to examine whether significant fatigue effect occur when conducting the Myostatic test repeatedly, which would adversely affect the reliability of method.
In order to address this issue, ten test subjects between the ages of 19 and 30 years (average age = 22.7 years) were recruited. In this study, each subject performed 60 measurements of the individual finger strength using a device for objectified measurement of the Myostatic test. The subjects were to attempt, placing themselves in a neutral state of emotion, and observing an interval of 30 seconds each between the 60 measurements. The measurements were filmed using a camera, and two independent raters had to decide whether the fingers parted during the individual measurements or whether the subjects were able to hold the fingers together.
The results demonstrated that in case of this specific relationship between stress and interval, there were no significant changes in the strength over the repeated measurements of the Myostatic test, which could point to a fatigue effect after the repeated tests.