本学科の吉沢幸花助手、松本恵教授、金野潤准教授、櫛英彦元教授らの論文がJournal of Nutritional Science and
Vitaminologyに掲載されました。

題目：Correlation between Diet and Training: Impact on Blood ALT and γ-GTP Levels in Heavyweight Male Athletes
著者：Yukika Yoshizawa, Megumi Matsumoto, Jun Konno and Hidehiko Kushi
掲載：Journal of Nutritional Science and Vitaminology, Vol.72, Issue 5
DOI：10.3177/jnsv.72.19
リンク：https://www.jstage.jst.go.jp/article/jnsv/72/1/72_19/_pdf/-char/en

＜研究概要＞
陸上競技の投てき種目や重量級柔道などの重量級アスリートは、体格が大きく内臓脂肪量が高くなりやすく、肝機能への影響が懸念されています。本研究では、陸上投てき選手20名と重量級柔道選手9名を対象に、体組成測定、トレーニング調査、3日間の食事調査、血液検査を実施し、食事摂取量や身体活動量と肝機能指標との関連を分析しました。その結果、体重や炭水化物摂取量とALT値・γ-GTP値との間に正の相関が認められました。これらの結果から、重量級アスリートの肝機能管理にはトレーニングだけでなく食事調整も重要である可能性が示唆されました。

　Some heavyweight athletes like track and field throwing and heavyweight judo, have high levels of visceral fat, which
raises concerns about develop reduced liver function. This study presents a detailed analysis of the relationships among dietary intake, physical activity, and factors that exacerbate blood test results in these athletes. The study involved 20 track and field throwers (TF) and 9 judo heavyweight athletes (JH). We conducted body composition measurements using the impedance method, a training survey, and a semi-quantitative diet survey over 3 d. We performed blood tests to determine the effects of dietary intake and training on liver function. Blood tests revealed alanine aminotransferase (ALT) and g-glutamyl transpeptidase (g-GTP)
levels of 33±3 and 22±2 U/L in the TF, and 28±5 and 25±2 U/L in the JH. Daily energy intake and exercise energy expenditure were 3,018±149 and 884±71 kcal/d in the TF, and 3,160±146 and 1,593±153 kcal/d in the JH, respectively. We found positive correlations among weight, carbohydrate intake and energy ratio, ALT levels, and g-GTP levels in both groups. While decreased liver function is traditionally addressed by discontinuing training, this study suggests that dietary adjustments may also be necessary.