@article{oai:ryotokuji-u.repo.nii.ac.jp:00000243,
 author = {岡田, 隆 and Okada, Takashi and 池田, 未里 and Ikeda, Misato and 小菅, 亨 and Kosuge, Toru and 松本, 揚 and Matsumoto, Yo and 石井, 孝法 and Ishii, Takanori and 野田, 哲由 and Noda, Tetsuyoshi},
 issue = {9},
 journal = {了德寺大学研究紀要, The Bulletin of Ryotokuji University},
 month = {},
 note = {背景
ボディビル競技では体脂肪を最大限減少させ（除脂肪），除脂肪体重の多くを占める骨格筋が最も多い状態を作る（筋肥大）事が重要である．しかしその方法については不明な点が多い．

目的
ボディビルダーにおける試合までの長期調整（減量）期間における体重，身体組成の経時的変化を明らかにし，除脂肪，筋肥大の最適な方法を確立する事を目的とした．

方法
男子大学生ボディビルダー5名を対象とした．6ヶ月間1回／月，体重を測定し，インピーダンス法で体脂肪率，除脂肪体重，体脂肪量，体水分量を推定した．

結果
除脂肪体重以外の全ての項目は有意に減少した．体脂肪量の減少率は36.3±7.6％（-4.2±1.3kg）であり，除脂肪体重の2.7±1.2％（-1.8±1.0kg）と比較して有意に高かった．

結論
骨格筋を肥大させる目的を持ったボディビルダーの調整方法であれば除脂肪体重の減少を抑える事ができ，また体脂肪量の減少率が大きいため身体組成を著しく改善する事がわかった．レジスタンストレーニングには体重減少中の除脂肪体重損失を抑制する可能性ある事が示唆された．, Background
Bodybuilders attempt to reduce body fat mass and increase skeletal muscle volume for bodybuilding competition. However the way is unclear.
Purpose
The present study is aim to obtain the beneficial information of the optimum way to reduce body fat and increase lean body mass (LBM) by revealing the changing body composition during weight reduction for bodybuilding contest.
Methods
Five male university bodybuilders were recruited. They tried resistance training 6 days a week. We measured body mass, %fat, LBM, fat mass and body water once a month during six months weight reduction for bodybuilding competition.
Results
All parameters were significantly decreased. The decrement of fat mass was 36.3±7.6％(-4.2±1.3kg). It was significantly higher than 2.7±1.2％of LBM(-1.8±1.0kg).
Discussion
Even if the way for weight reduction which attempts to gain maximum skeletal muscle mass by resistance training for bodybuilding competition, LBM doesn’t increase but remain. The way has ability to change the body composition remarkably because decrement of fat mass is very high and to prevent loosing LBM. We suggest that the person who tries to reduce their body mass should do resistance training to prevent loosing LBM.},
 pages = {33--41},
 title = {ボディビルダーの減量における身体組成の継時的変化},
 year = {2015},
 yomi = {オカダ, タカシ and イケダ, ミサト and コスゲ, トオル and マツモト, ヨウ and イシイ, タカノリ and ノダ, テツヨシ}
}