Background: Endorphin is a biological change in molecular physiology that is commonly connected with anxiety. An increase in the level of anxiety is caused by both an increase and a decrease in the number of endorphins that are present in the brain; however, up until this point, it has never been reported that there is a relationship between the level of anxiety and the influence of interval training.
Objective: The purpose of this study was to analyze the effect of training interval on endorphin level and anxiety degrees of secaba student soldiers with moderate degrees of anxiety.