Sword Spotlight: The Japanese Shinai

The Japanese shinai isn't a typical bladed sword, but rather a practice sword made of natural bamboo that's used for training. While commonly used in modern-day kendo competitions, the shinai has a long and rich history dating back hundreds of years.

History of the Shinai

It's unknown when exactly the first shinai was created, or who was responsible for inventing it. However, the first recorded use of a bamboo training sword occurred in 16th century Japan, during which samurai warrior Kamiizumi Ise-no-kami Fujiwara-no-Nobutsuna used the shinai in combat school.

It's believed that Kamiizumi and other practitioners used the shinai to prevent injury during training. Previously, samurai warriors and martial arts practitioners used real swords and wooden swords during training, which often resulted in bodily injury. Using a bamboo sword like the shinai prevented such injuries from occurring.

The shinai has evolved over the years, with the modern version featuring four slats of bamboo that are tied together. This design helps to minimize the force of blows. When a practitioner hits an opponent with the shinai, the four slats flex while equally distributing the force over time. Martial arts experts who use the shinai say the worst injuries that occur with the shinai are bruises, and even those are few and far between.

Shinai Maintenance

Like traditional, functional swords, the shinai requires regular maintenance and care. This includes inspecting the practice sword for structural cracks and breaks. If a crack forms in the bamboo, it could cause splintering. Not only is this bad for the shinai, but it also increases the risk of bodily injury.

The shinai should be placed on the floor or propped vertically against a wall when not in use. When the shinai is stored on the floor, no one should walk or step over it, as this is considered poor etiquette. There's no tangible benefit to storing a shinai in this manner. Rather, kendo practitioners teach students to treat the shinai as a real weapon.

Choosing a Shinai

If you're interested in buying a shinai, there are several things to consider:

• Intended purpose: when using a shinai in kendo competitions, it must meet the FIK regulations.
• Length: it's a good idea to choose a shinai in an appropriate length for your body. Kendo students who are tall may prefer a longer shinai. However, you'll need to ensure the length complies with the FIK regulations if using the shinai in kendo competitions.
• Weight: a lighter shinai is recommended for beginners, as it's easier to handle than a heavier type. Again, weight is also governed by the FIK regulations for kendo.
• Bamboo quality: consider the quality of bamboo used in the shinai's construction. Low-quality bamboo is more likely to break and splinter.