出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：In this paper it is discussed whether the exercises of Judo has same effects on the growth or the ultimate dimensions of the head and face. The approach to the problem consisted of two parts; the cephalometric study based on the cross-sectional data obtained from the subjects from 15 to 29 year old, and the radiocephalogrammetric study made on students from 18 to 24 years of age. The subjects were all males, who were categorized into the Judo group and the control group. From the first approach, it was found that the mean values of the head and face dimensions were significantly longer and broader in the Judo group than in the control, and that these differences became more distinct with age. And from the second approach, The following results were obtained; the dimensional differences in the head between two groups were not due to the scalp and muscle, nor to the cranial cavity and brain, but were due to the thickness of bone plate, especially to that of dipole. From these facts, it was assumed that the increase in the muscle mass resulted from the exercises of Judo might exert an influence on the growth of outer bony layer of cranium.
其他摘要：In this paper it is discussed whether the exercises of Judo has same effects on the growth or the ultimate dimensions of the head and face. The approach to the problem consisted of two parts; the cephalometric study based on the cross-sectional data obtained from the subjects from 15 to 29 year old, and the radiocephalogrammetric study made on students from 18 to 24 years of age. The subjects were all males, who were categorized into the Judo group and the control group. From the first approach, it was found that the mean values of the head and face dimensions were significantly longer and broader in the Judo group than in the control, and that these differences became more distinct with age. And from the second approach, The following results were obtained; the dimensional differences in the head between two groups were not due to the scalp and muscle, nor to the cranial cavity and brain, but were due to the thickness of bone plate, especially to that of dipole. From these facts, it was assumed that the increase in the muscle mass resulted from the exercises of Judo might exert an influence on the growth of outer bony layer of cranium.
