补充l -瓜氨酸对跆拳道运动员短跑间歇训练中脑血管功能的影响

IF 2.4 2区医学 Q2 SPORT SCIENCES

Journal of Exercise Science & Fitness Pub Date : 2025-05-01 DOI:10.1016/j.jesf.2025.04.004

Aiqin Li , Haojie Li , Jiangang Chen

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引用次数: 0

摘要

冲刺间歇训练（SIT）是一种高强度的运动，通常用于提高格斗运动中的运动表现，可以影响脑血流量。由于维持脑血管健康对运动表现和恢复至关重要，本研究旨在研究补充l -瓜氨酸对跆拳道运动员SIT后脑血管功能的影响。方法采用双盲、随机交叉设计，选取20名18 ~ 30岁的男性跆拳道运动员。参与者连续5天服用8.8克l -瓜氨酸或安慰剂（麦芽糊精）。该方案包括四次30秒的最大冲刺。采用经颅多普勒（TCD）测量运动前后屏气指数（ΔBHI）和脉搏指数（ΔPI）的变化，评估脑血管功能。结果两组平均功率无显著性差异（F = 1.27, P = 0.275, η2p = 0.07）。l -瓜氨酸组脑血管功能明显改善，ΔBHI呈阳性变化（F = 5.09, P = 0.037, η2p = 0.22）。ΔPI无显著影响（F = 0.19, P = 0.669, η2p = 0.01）。结论补充l -瓜氨酸可促进高强度训练后的脑血管功能恢复，提示跆拳道运动员在不影响成绩和外周阻力的情况下，通过促进脑血管健康发挥保护作用。

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The effects of L-citrulline supplementation on cerebrovascular function during sprint interval training in taekwondo athletes

Background

Sprint Interval Training (SIT), a high - intensity exercise commonly used to improve athletic performance in combat sports, can affect cerebral blood flow. As the maintenance of cerebrovascular health is crucial for athletic performance and recovery, this study aimed to examine the effects of L-citrulline supplementation on cerebrovascular function following SIT in Taekwondo athletes.

Methods

Twenty male Taekwondo athletes (ages 18–30) participated in a double-blind, randomized crossover design. Participants received either 8.8 g of L-citrulline or a placebo (maltodextrin) for 5 consecutive days. The protocol involved four 30-s maximal sprints. Cerebrovascular function was assessed using transcranial Doppler (TCD) to measure changes in the breath-holding index (ΔBHI) and Pulse Index (ΔPI) before and after exercise.

Results

No significant difference was found for average power between conditions (F = 1.27, P = 0.275, η²_p = 0.07). A significant improvement in cerebrovascular function was observed in the L-citrulline group, with a positive change in ΔBHI (F = 5.09, P = 0.037, η²_p = 0.22). No significant effect was found for ΔPI (F = 0.19, P = 0.669, η²_p = 0.01).

Conclusions

L-citrulline supplementation enhanced cerebrovascular function recovery after SIT, suggesting a protective effect for Taekwondo athletes engaged in high-intensity training by promoting cerebral vascular health without affecting performance or peripheral resistance.

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来源期刊

Journal of Exercise Science & Fitness 医学-运动科学

CiteScore

5.10

自引率

3.60%

发文量

审稿时长

31 days

期刊介绍： The Journal of Exercise Science and Fitness is the official peer-reviewed journal of The Society of Chinese Scholars on Exercise Physiology and Fitness (SCSEPF), the Physical Fitness Association of Hong Kong, China (HKPFA), and the Hong Kong Association of Sports Medicine and Sports Science (HKASMSS). It is published twice a year, in June and December, by Elsevier. The Journal accepts original investigations, comprehensive reviews, case studies and short communications on current topics in exercise science, physical fitness and physical education.