College of Health and Welfare, J.F. Oberlin University, 3758 Tokiwamachi, Machida, Tokyo, 194-0294, Japan.
Waseda Institute for Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama, 359-1192, Japan.
Sci Rep. 2022 Jul 12;12(1):11796. doi: 10.1038/s41598-022-15576-x.
The purpose of this study was to explore the characteristics of total body and appendicular bone mineral content (BMC, kg) and bone mineral density (BMD, g/cm) in Japanese collegiate Sumo wrestlers. A total of 54 male college Sumo wrestlers were recruited for the study and assigned to two groups according to their body weight (middleweight, 85-115 kg, n = 23 and heavyweight, > 115 kg, n = 31). The BMC, BMD, fat mass, and lean soft tissue mass (LSTM) values were measured using dual-energy X-ray absorptiometry for the total body and appendicular regions. Heavyweight Sumo wrestlers had significantly higher body weight, fat mass, and LSTM compared to middleweight Sumo wrestlers. The mean total body and regional BMC values were significantly higher in heavyweight than in middleweight Sumo wrestlers. The total body and leg BMD was significantly higher in heavyweight than in middleweight Sumo wrestlers, and was significantly correlated with body weight, but not arm BMD. The present study indicates that BMC and BMD might not sharply elevate among even heavyweight athletes, although heavier Sumo wrestlers had a greater BMC and BMD.
本研究旨在探讨日本大学生相扑运动员全身和四肢骨矿物质含量（BMC，kg）和骨矿物质密度（BMD，g/cm）的特点。共招募了 54 名男性大学生相扑运动员，根据体重分为两组：中量级（85-115kg，n=23）和重量级（>115kg，n=31）。使用双能 X 射线吸收法测量全身和四肢区域的 BMC、BMD、体脂肪量和瘦软组织量（LSTM）值。与中量级相扑运动员相比，重量级相扑运动员的体重、体脂肪量和 LSTM 明显更高。与中量级相扑运动员相比，重量级相扑运动员的全身和各部位 BMC 值明显更高。与中量级相扑运动员相比，重量级相扑运动员的全身和腿部 BMD 明显更高，且与体重显著相关，但与手臂 BMD 无关。本研究表明，尽管较重的相扑运动员具有更大的 BMC 和 BMD，但即使是重量级运动员，BMC 和 BMD 也可能不会急剧升高。
