力士の骨密度に関する検討

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  • Effects of Special Physical Characteristics and Exercise on Bone Mineral Density in Sumo Wrestlers.

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Sumo is the national sport of Japan, and Sumo wrestlers have a specific diet, special physical characteristics and do a great deal of practice for their sport. These factors may markedly affect the bones. We observed for 1 year the effects of the physical characteristics, daily diet, and physical activities of sumo wrestlers on bone mineral density (BMD) and compared their BMD with that of age-matched male students as controls. BMD values for the lumbar spine, humerus, and femur of sumo wrestlers were higher than those of the controls (p<0.001) and were markedly correlated with the physical characteristics of the sumo wrestlers. Accordingly, the most important factors for sumo wrestlers to increase BMD may be improvement of their physique and enhancement of skeletal muscle strength. Sumo wrestlers 1-2 years after entering a stable showed increased BMD of the diaphysis of the humerus and femur, suggesting that the diaphysis is affected by weight and practice (load and mechanical stress). In sumo wrestlers with 6-8 years of experience, BMD of the femur proximal metaphysis was increased. This finding suggests that stamping in the ring, an exercise specific to sumo, increases BMD in each bone part

収録刊行物

  • 日本家政学会誌

    日本家政学会誌 50 (7), 673-682, 1999

    一般社団法人 日本家政学会

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