Kato Morimasa, Omiya Mayuko, Horiuchi Makino, Kurata Daisuke
Department of Health and Nutrition, Yamagata Prefectural Yonezawa University of Nutrition Sciences, Yonezawa 992-0025, Japan.
Bean Research Section, Denroku Co Ltd, 3-2-45 Kiyozumi-Machi, Yamagata 990-8506, Japan.
Evid Based Complement Alternat Med. 2022 Mar 10;2022:3757395. doi: 10.1155/2022/3757395. eCollection 2022.
This study aimed at evaluating whether high-oleic peanuts (with skin), which are rich in oleic acid, could serve as an energy substrate for prolonged exercise and improve endurance performance. We evaluated changes in blood biomarker (triglycerides, free fatty acid (FFA), biological antioxidant potential (BAP), malondialdehyde-modified low-density lipoprotein (MDA-LDL), and serum total protein) levels at 2-h intervals for 6 h after the ingestion of 10 g and 30 g of peanuts. The results were used to determine the timing of peanut ingestion before the endurance performance test. As a result, there was a significant change in the 30-g peanut-ingested condition, and lipid levels increased 2 h after the ingestion of 30 g of peanuts. Accordingly, the endurance performance test was conducted 2 h after ingesting 30 g of peanuts. The endurance performance test involved 70 min of pedaling exercise. We measured pre- and postexercise levels of 8-hydroxy-2'-deoxyguanosine (8-OHdG), which is a biomarker of oxidative stress. There was a significantly improved workload in the endurance performance test in the high-oleic peanut-ingested condition than in the control condition. Furthermore, the rate of increase in 8-OHdG was significantly lower in the high-oleic peanut-ingested condition than in the control condition. This suggests that the increase in FFA levels resulting from the ingestion of high-oleic peanuts and the inherent antioxidant effects of peanuts improved the workload during endurance exercise.
本研究旨在评估富含油酸的高油酸花生（带皮）是否可作为长时间运动的能量底物并提高耐力表现。我们在摄入10克和30克花生后，每隔2小时评估6小时内血液生物标志物（甘油三酯、游离脂肪酸（FFA）、生物抗氧化潜力（BAP）、丙二醛修饰的低密度脂蛋白（MDA-LDL）和血清总蛋白）水平的变化。结果用于确定耐力表现测试前花生的摄入时间。结果，在摄入30克花生的情况下有显著变化，摄入30克花生后2小时血脂水平升高。因此，在摄入30克花生后2小时进行耐力表现测试。耐力表现测试包括70分钟的蹬车运动。我们测量了运动前后作为氧化应激生物标志物的8-羟基-2'-脱氧鸟苷（8-OHdG）水平。与对照条件相比，高油酸花生摄入条件下的耐力表现测试中的工作量有显著改善。此外，高油酸花生摄入条件下8-OHdG的增加率显著低于对照条件。这表明摄入高油酸花生导致的FFA水平升高以及花生固有的抗氧化作用改善了耐力运动期间的工作量。
