Research Journal of Budo
Online ISSN : 2185-8519
Print ISSN : 0287-9700
ISSN-L : 0287-9700
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Volume 37, Issue 3
Displaying 1-4 of 4 articles from this issue
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  • Influence of Datotsu in Kendo on the Human Head :Impact Estimation Using Simulation with Crash Dummy
    Fuminori NAKIRI, Naoya YOKOYAMA, Yuji ARITA, Tetsuya KUBO, Shin-ichi Y ...
    2005 Volume 37 Issue 3 Pages 1-11
    Published: March 31, 2005
    Released on J-STAGE: November 27, 2012
    DOIhttps://doi.org/10.11214/budo1968.37.3_1
    JOURNAL FREE ACCESS
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    To clarify, from a biomechanical viewpoint, the impacts on men and tsuki transmitted through the Kendo protective gear to the human body, this study attempted to measure changes in accelerations in attacks to the head of dummies and actual human subjects, and to investigate the safety of the Kendo headgear (men) in protecting the human head based on the JARI human head impact tolerance curve.
    The following results were obtained:
    1. A men attack at the distance of one step and one attack (issoku itto) has the lowest possibility of damage by acceleration among the three patterns of attack because of the low acceleration level.
    2. A single impact to the head is not serious enough to cause damage such as a cranial fracture or cerebral concussion. However, because continuous or long-term impacts could cause chronic subdural hematoma, further investigations are necessary.
    3. The thrust action has low possibility of head damage due to acceleration because the acceleration level is low.
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  • Characteristics of Bone Mineral Density in Male and Female University Kendo Athletes
    Shinichi YAMAGAMI, Yuichi ISHIKAWA, Hidetoshi SAKAI, Shoji FUJIWARA, J ...
    2005 Volume 37 Issue 3 Pages 13-23
    Published: March 31, 2005
    Released on J-STAGE: November 27, 2012
    DOIhttps://doi.org/10.11214/budo1968.37.3_13
    JOURNAL FREE ACCESS
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    A study was conducted to investigate the influence of kendo exercise on the bone mineral density in male and female university kendo athletes. The subjects were 45 male university kendo athletes and 23 female university kendo athletes. They had an average kendo experience of 13.2 years and 10.0 years. Measurements were performed using an AOS100 (ALOKA Corp.). We measured the speed of sound (SOS), transmission index (TI), and osteo sonoassessment index (OSI). The mean values of SOS, TI, and OSI in male and female university kendo athletes were higher than in the same aged control group and the peak bone mass aged control group.The values of the left heel were significantly higher than that of the right heel in bone mineral density. Body weight was significantly related to bone mineral density in male and female university kendo athletes. These results suggest that regular kendo exercise during youth is effective for the increase in bone mineral density.
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  • [title in Japanese]
    2005 Volume 37 Issue 3 Pages 25-42
    Published: March 31, 2005
    Released on J-STAGE: November 27, 2012
    DOIhttps://doi.org/10.11214/budo1968.37.3_25
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    2005 Volume 37 Issue 3 Pages 43-53
    Published: March 31, 2005
    Released on J-STAGE: November 27, 2012
    DOIhttps://doi.org/10.11214/budo1968.37.3_43
    JOURNAL FREE ACCESS
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