Ishizu Tatsuya, Takai Eri, Torii Suguru, Taguchi Motoko
Graduate School of Sport Sciences, Waseda University, Saitama 359-1192, Japan.
Waseda Institute of Sports Nutrition, Saitama 359-1192, Japan.
Sports (Basel). 2021 Jun 4;9(6):82. doi: 10.3390/sports9060082.
The aim of the present study was to clarify the influence of inulin and lactulose-fortified prebiotic food intakes on bone metabolism turnover among Japanese female athletes. The participants included 29 female athletes aged 18-25 years. They were requested to consume their habitual foods or drinks with one pack of prebiotic food every day for 12 weeks. Dietary intake, training time, body composition, blood sample, and fecal microbiota were assessed during this intervention period. Body composition, total energy intake, and training time of the participants revealed no significant changes during the intervention period. The occupation ratio of spp. was significantly increased at 3 and 4 weeks (18.0 ± 8.3% and 17.6 ± 8.5%, respectively) compared to that of pre-intervention (11.7 ± 7.3%) ( = 0.019 and = 0.035, respectively). The serum TRACP-5b level was significantly decreased at 12 weeks (363 ± 112 mU/dL) compared to that at baseline (430 ± 154 mU/dL) ( = 0.018). These results suggest that the prebiotic food used in this study might have beneficial effects on bone health and gut microbial environment among female athletes. Further studies are warranted to identify the mechanism of the prebiotics-gut-bone axis.
本研究的目的是阐明菊粉和添加乳果糖的益生元食品摄入量对日本女运动员骨代谢转换的影响。参与者包括29名年龄在18至25岁之间的女运动员。要求她们在12周内每天食用惯常的食物或饮料，并搭配一包益生元食品。在此干预期内评估饮食摄入量、训练时间、身体成分、血液样本和粪便微生物群。干预期间，参与者的身体成分、总能量摄入量和训练时间均无显著变化。与干预前（11.7±7.3%）相比，在第3周和第4周时， spp. 的占比显著增加（分别为18.0±8.3%和17.6±8.5%）（分别为 = 0.019和 = 0.035）。与基线时（430±154 mU/dL）相比，血清抗酒石酸酸性磷酸酶5b（TRACP-5b）水平在第12周时显著降低（363±112 mU/dL）（ = 0.018）。这些结果表明，本研究中使用的益生元食品可能对女运动员的骨骼健康和肠道微生物环境有有益影响。有必要进行进一步研究以确定益生元-肠道-骨骼轴的机制。
