Citation

Murayama H, Hitosugi M, Motozawa Y, Ogino M, Koyama K. Neurol. Med. Chir. 2013; 53(9): 580-584.

Affiliation

Department of Sports Science, Dokkyo Medical University School of Medicine.

Copyright

(Copyright © 2013, Japan Neurosurgical Society)

DOI

unavailable

PMID

24067767

Abstract

To determine whether the use of an under-mat has an effect on impact forces to the head in Judo, a Judo expert threw an anthropomorphic test device using the Osoto-gari and Ouchi-gari techniques onto a tatami (judo mat) with and without an under-mat. Head acceleration was measured and the head injury criterion (HIC) values with or without under-mat were compared. The use of an under-mat significantly decreased (p = 0.021) the HIC values from 1174.7 ± 246.7 (without under-mat) to 539.3 ± 43.5 in Ouchi-gari and from 330.0 ± 78.3 (without under-mat) to 156.1 ± 30.4 in Osoto-gari. The use of an under-mat simply reduces impact forces to the head in Judo. Rule changes are not necessary and the enjoyment and health benefits of Judo are maintained.

Language: en