Resistance Training for Martial Artists, Backed by Science
The ACSM's 2026 Position Stand synthesized 137 systematic reviews covering more than 30,000 participants. Here is what the findings mean for martial artists who want to train smarter.
Masaaki Hatsumi (born December 2, 1931, in Noda, Chiba Prefecture, Japan) is a renowned Japanese martial artist, best known as the founder of the Bujinkan organization and the 34th sōke (grandmaster) of Togakure-ryū ninjutsu. He is widely recognized for his role in preserving and teaching traditional Japanese martial arts, particularly ninjutsu.
Hatsumi began his martial arts journey at a young age, studying various disciplines including judo, karate, aikido, and boxing. He achieved a 4th-degree black belt in judo and taught American soldiers at the Yokota Air Base during his university years. Seeking deeper understanding, he studied under Toshitsugu Takamatsu, known as "the Tiger of Mongolia," for 15 years. Takamatsu designated Hatsumi as his successor, passing on the grandmaster titles of nine traditional martial arts schools.
Beyond martial arts, Hatsumi is a multifaceted artist—painter, actor, musician, and author. He has written numerous books and columns on ninjutsu and martial arts philosophy. His involvement in media includes serving as a martial arts advisor for films like the James Bond movie "You Only Live Twice" and appearing in the Japanese television series "Sekai Ninja Sen Jiraiya" as the mentor character Tetsuzan Yamaji.