Vovinam to demonstrate Vovinam publicly in Hanoi with his disciples in 1940, Nguyễn was invited to teach the art at Hanoi's Ecole Normale, and Vovinam gained in popularity. During the following years, political unrest increased throughout Vietnam; due to the system's nationalist political orientation, the art came under suppression. By 1954, Nguyễn had emigrated to South Vietnam, where he was able to continue to teach and establish Vovinam schools. After his death in 1960, Grandmaster Le Sang continued the development and international promotion of Vovinam until his own death on September 27, 2010. The first Vovinam school outside of Vietnam was
Martial arts therapy combat sports (Kickboxing, Submission Wrestling, Mixed martial arts), many instructors and organizations teach only martial/combative techniques with little (if any) attention to philosophical, spiritual or societal issues. In other words, students may only be taught how to fight without lessons in the proper context for applying these techniques, something that is emphasized in more traditional martial art curricula. Hypothetically, if these philosophical/societal teachings were one of the specific therapeutic factors in martial arts study, studying an art without these teachings would be of little therapeutic benefit, and arguably detrimental to psychological health (Reynes, 2002). Additionally, if not properly informed, a