Kavcı Zafer, Ozan Murat, Buzdağlı Yusuf, Savaş Adem, Uçar Halil
Atatürk University, Graduate School of Winter Sports and Sport Sciences, Erzurum, Turkey.
Atatürk University, Department of Physical Education and Sports, Kazım Karabekir Faculty of Education, Erzurum, Turkey.
J Int Soc Sports Nutr. 2025 Dec;22(1):2445609. doi: 10.1080/15502783.2024.2445609. Epub 2024 Dec 23.
Taekwondo is a complex martial art that requires speed, balance, agility, and endurance. This study aims to examine the effects of nitrate and L-arginine supplementation on acute aerobic and anaerobic performance, balance, agility, and recovery in elite taekwondo athletes.
This study was conducted as a double-blind, randomized, crossover study with the participation of 15 experienced taekwondo athletes aged 19.06 ± 0.96 years and 8.93 ± 1.27 years of training experience. Participants visited the laboratory a total of nine times, including a practice session and anthropometric measurements. These visits consisted of eight experimental sessions conducted at 72-hour intervals. The experimental sessions were conducted with nitrate, L-arginine, and a combination of both supplements (NIT*L-ARG) and placebo. Nitrate supplementation was provided by homogenizing fresh spinach (837.40 mg/kg), while L-ARG was given as a single dose of 6 g in powder form three hours before exercise.
NITL-ARG supplementation significantly improved the anaerobic performance of athletes in Wingate peak power and peak power (w/kg) compared to placebo and in mean power compared to NIT, L-ARG, and PLA. In addition, NITL-ARG supplementation significantly improved blood lactate levels and agility performance immediately after Wingate and Shuttle run tests.
The combined intake of NIT*L-ARG was found to be effective in improving aerobic, anaerobic, and agility performances as well as fatigue levels of athletes. It was determined that taking NIT and L-ARG supplements alone contributed to the improvement of improving athletes' performance in Wingate mean power values and subsequent fatigue level compared to PLA.
跆拳道是一项复杂的武术运动，需要速度、平衡、敏捷性和耐力。本研究旨在探讨补充硝酸盐和L-精氨酸对精英跆拳道运动员急性有氧和无氧运动表现、平衡、敏捷性及恢复能力的影响。
本研究为双盲、随机、交叉研究，共有15名经验丰富的跆拳道运动员参与，他们的年龄为19.06±0.96岁，训练经验为8.93±1.27年。参与者总共访问实验室9次，包括一次练习课和人体测量。这些访问包括以72小时间隔进行的8次实验课。实验课使用硝酸盐、L-精氨酸、两种补充剂的组合（NIT*L-ARG）和安慰剂进行。通过将新鲜菠菜匀浆（837.40毫克/千克）来提供硝酸盐补充，而L-ARG在运动前3小时以6克粉末形式单剂量给药。
与安慰剂相比，NITL-ARG补充剂显著提高了运动员在温盖特峰值功率和峰值功率（瓦/千克）方面的无氧运动表现，与NIT、L-ARG和PLA相比，在平均功率方面也有显著提高。此外，NITL-ARG补充剂在温盖特和穿梭跑测试后立即显著改善了血乳酸水平和敏捷性表现。
发现NIT*L-ARG的联合摄入可有效提高运动员的有氧、无氧和敏捷性表现以及疲劳水平。已确定，与PLA相比，单独服用NIT和L-ARG补充剂有助于提高运动员在温盖特平均功率值方面的表现以及随后的疲劳水平。
