"However, in order to increase physical strength and endurance for kendo, you should do a lot of kirikaeshi, uchikomi and kakari-geiko.
When you do kirikaeshi, try to do it with long breaths. It doesn't have to be one breath from the start. If you can do it with one breath, that is wonderful.
If you breathe in and out after each strike, it doesn't increase your physical endurance. And make sure you strike each cut properly.
We really have to try to cut down onto our motodachi's men. If we do that, kirikaeshi becomes very hard and tough exercise. So if you do kirikaeshi thoroughly, you will be very strong and stamina will increase."
och i kommentaren:
"... For example, if you are a swimmer, you should spend most of your training time in the pool. "Cross training" certainly has it's benefits, but our muscles respond to exercise by recruiting fibres and increasing the number and size of mitochondria in order to produce a more efficient body for the exercise...simply put, if you do running as part of your training, you will basically get better at running!
Again, it is really important that you do Kendo to get good at Kendo. (I have Mountain bikers in my Kendo class that are extremely "fit", but can't keep up with other people that only do Kendo!)
Therefore, do as Hiro san suggested with the Kakarigeiko, Uchikomi, and Kirikaeshi and apply the formula that I have suggested also. You will find that your average heart rate over the duration of a training (30 min or more, several times per week) will be improving your "Kendo fitness". Don't forget also, the more you train, the easier it will get!"