Dr. Milorad V. Stricevic is the leading authority on the science of Karate in the world. This is a link to his YouTube lectures on various topics. 
Sensei Casale spent over 30 years under the tutelage and mentorship of Dr. Stricevic and highly recommends these videos to anyone who wishes to deepen their knowledge of Karate, and/or consider more scholarly and scientifically researched points of view.