PDF(Pubmed)
Abstract：
Dietary fiber (DF) consumption has been associated with improved glycemic control in epidemiological and long-term interventional studies. However, its acute effects are not yet clear. This systematic review aims to elucidate the postprandial effects of DF in starchy products on glycemia and insulinemia. An electronic search of databases was conducted, and forty-one records met the inclusion criteria and underwent a risk-of-bias assessment. It was shown that soluble DF does not clearly affect glycemia in individuals with normal weight, while resistant starch may be more effective in flattening glycemic responses. Concerning insulinemia, both soluble DF and resistant starch have mixed results, with either favorable or no effects. Data on insoluble DF and glucose metabolism are scarce. The same mixed results for glycemia can be seen in healthy volunteers with overweight/obesity, while resistant starch seems to improve insulinemic responses. Finally, more studies need to examine the acute effects of DF in starchy foods on glucose metabolism and insulin secretion in individuals facing glucose abnormalities. Additionally, more studies are needed to prove whether ingesting high-fiber carbohydrate-containing products per se can result in blunted glycemic and insulinemic responses and which DF type and amount are more effective.
摘要：
在流行病学和长期干预研究中，膳食纤维（DF）的消耗与改善的血糖控制有关。然而,其严重影响尚不清楚。本系统综述旨在阐明淀粉产品中DF对血糖和胰岛素血症的餐后影响。对数据库进行了电子检索,41条记录符合纳入标准,并接受偏倚风险评估.研究表明，可溶性DF不会明显影响正常体重个体的血糖，而抗性淀粉可能更有效地抑制血糖反应。关于胰岛素血症，可溶性DF和抗性淀粉都有混合的结果，要么有利，要么没有效果。关于不溶性DF和葡萄糖代谢的数据很少。在超重/肥胖的健康志愿者中可以看到相同的血糖混合结果，而抗性淀粉似乎可以改善胰岛素反应。最后,更多的研究需要检查淀粉类食物中DF对面临葡萄糖异常的个体的葡萄糖代谢和胰岛素分泌的急性影响。此外,需要更多的研究来证明摄入含有高纤维碳水化合物的产品本身是否会导致血糖和胰岛素反应减弱，以及DF类型和剂量更有效。
