From Benji's blog I found this article and hope to share with you:
In your daily practice, to what angle do you swing up the shinai, and to what position do you swing it down to? In Heisei 10, at the 31st Japanese Budo Forum, two pieces of research were presented:
'Changes in suburi - in particular changes caused by kensen position at the apex of the upswing - due to variations in kendo teaching methods' and
'Suburi teaching methods in kendo - variations in arm action at the terminal position during empty striking'.
The researchers were a group centered around Professor Ueda Fumio (kyoshi 7 dan) and Assistant Professor Yoshida Yasumasa (7 dan), both of Keio Gijuku University. Both researchers have since further advanced their research into suburi, and continue to scientifically search for the most effective suburi. Here, they explain suburi that is effective in actual use.
Please visit the original page HRER is the ULR.